[HN Gopher] British F-35B crash possibly caused by 'rain cover' ...
       ___________________________________________________________________
        
       British F-35B crash possibly caused by 'rain cover' left on during
       launch
        
       Author : rwmj
       Score  : 86 points
       Date   : 2021-11-24 13:16 UTC (9 hours ago)
        
 (HTM) web link (theaviationist.com)
 (TXT) w3m dump (theaviationist.com)
        
       | glitchc wrote:
       | Ultimately it's the pilot's responsibility to do a visual
       | inspection of the entire aircraft. Of particular importance are
       | the propulsion components and the control surfaces. We can blame
       | the ground crew for missing an item on the checklist, but the
       | pilot should have caught it.
       | 
       | Those covers are red for a reason, so that they're easy to spot
       | and remove. Furthermore, the ladder to climb into the cockpit is
       | right next to the intake, and if you see one, you have to check
       | the other side. How was it possibly missed?
        
         | sokoloff wrote:
         | I think this is not true in military aviation. I've heard it's
         | a sign of trust in the aircraft's ground crew for a military
         | aviator to walk out, strap in, and blast off, trusting that the
         | ground crew has done their job thoroughly and correctly.
        
           | _djo_ wrote:
           | I don't know who practices that, but it's not a very
           | professional approach. The only time I've known that to
           | happen has been for quick reaction alerts, when it's
           | considered an acceptable risk to save time.
           | 
           | For normal operations the pilot doing their own check isn't a
           | lack of confidence in the ground crew, it's the prudent,
           | smart, and responsible thing to do when playing with people's
           | lives and very expensive aircraft. I've never known ground
           | crew to get upset over it.
        
             | sokoloff wrote:
             | Air Force Thunderbirds: https://www.aopa.org/news-and-
             | media/all-news/2012/march/31/m...
             | 
             | (Which means I'm only partially right, but I admit mostly
             | wrong. I've also seen strong evidence that the Blue Angels
             | do something similar, but can't quickly find a reference.)
        
               | CobaltFire wrote:
               | I can't speak to the Thunderbirds, but I know that on the
               | Maintenance side getting accepted to the Blue Angels is
               | HARD. They are extraordinarily picky, and the application
               | process is demanding.
               | 
               | The people who go tend to be the ones everyone hates at
               | the front line squadrons because they are the sticklers
               | for doing things right and putting in the work to do it
               | right AND fast. Most others will cut corners on one or
               | the other without oversight.
        
               | _djo_ wrote:
               | Ah yeah, the Blue Angels do the same. It's all part of
               | the show for them, with the aircraft parked in view of
               | the public and a big deal made of the pilots walking to
               | the aircraft and there being a smooth and rehearsed
               | synchronised starting process.
               | 
               | I don't really understand why they do it, to be honest.
               | Most other military display teams, including the famous
               | Red Arrows and Frecce Tricolori, just do regular startups
               | with all the usual preflight checks.
        
             | pie42000 wrote:
             | This is the stupidest thing I've ever heard. It makes sense
             | for something that you personally own and maintain yourself
             | i.e. a Cesna. Do you expect Air Force 1 pilots to do walk
             | around? Astronauts? Submarines?
             | 
             | These are mostly war machines that have to be scrambled
             | asap, meaning the pilot is expected to jump in and fly. To
             | alter that during peacetime would be silly, as you want to
             | establish habits.
        
               | AdrianB1 wrote:
               | All pilots, no matter what aircraft they fly, do the pre-
               | flight walk around. Too many people died by not doing it,
               | so they do.
        
               | _djo_ wrote:
               | The pilots of Air Force One do in fact do pre-flight
               | inspections and walks around, yes. I've seen them do it
               | personally. All military pilots do their own pre-flight
               | inspections, including checking inlets, exhausts, the
               | undercarriage, and flight surfaces.
               | 
               | But don't take my word for it, here's a video I found as
               | literally the first result when googling for it, showing
               | a USAF F-22 pilot conducting a full pre-flight walk
               | around inspection:
               | https://www.dvidshub.net/video/149526/f-22-walk-around
               | 
               | Before saying something is the 'stupidest thing' you've
               | ever heard, it might be worth first making sure you
               | actually know what you're talking about.
        
               | ben7799 wrote:
               | Most Air Forces are nowhere near as professional as USAF
               | so they might be much less likely to be enforcing pilot
               | pre-flight checks.
               | 
               | There are no shortage of horror stories about what is
               | found when USAF pilots get deployed to train pilots in
               | other Air Forces.
        
               | _djo_ wrote:
               | Unless you're talking about dysfunctional developing
               | world air forces like the Afghan Air Force I have
               | difficulty believing that, and even then I'd question it.
               | I can't say I know how every single force operates, but
               | I've seen a few African air force crews doing preflight
               | preparations and in all cases the pilots did their own
               | inspections. It's really basic operational stuff.
               | 
               | The USAF is also not any more professional than other
               | developed world and NATO air forces, who all have similar
               | procedures in any case.
        
           | metaphor wrote:
           | > _I've heard it's a sign of trust in the aircraft's ground
           | crew for a military aviator to walk out, strap in, and blast
           | off, trusting that the ground crew has done their job
           | thoroughly and correctly._
           | 
           | To be sure, military aviation doesn't give a flying fuck
           | about virtue signaling. The name of the game is checklist and
           | enumerated procedure compliance or GTFO the flightline/deck;
           | it doesn't matter if you're a fighter pilot or maintenance
           | ground crew.
        
           | ChuckNorris89 wrote:
           | _> I've heard it's a sign of trust in the aircraft's ground
           | crew for a military aviator to walk out, strap in, and blast
           | off, trusting that the ground crew has done their job
           | thoroughly and correctly._
           | 
           | If that's true, that sounds kinda weird. Military aviation
           | should run on procedures and checklists with redundancies.
           | 
           | When someone hands you an unloaded gun, you don't just trust
           | that it's unloaded even if it's their job, but you check
           | yourself there's no round in the chamber first before
           | handling it.
           | 
           | Same with fighter jets, checks should be made by crew and
           | pilot to ensure nothing escapes.
        
           | cbtacy wrote:
           | That is simply not true.
        
         | tobyjsullivan wrote:
         | > How was it possibly missed?
         | 
         | Since you asked, here's one idea:
         | 
         | - Did you notice the rain covers are present in the second
         | photo in the article? I had to do a double-take because they're
         | very dark. I suspect they're less obvious compared to other
         | aircraft.
         | 
         | - Was the launch at night? If so, is the deck of this carrier
         | appropriately lit wherever this plane was parked for
         | inspection?
         | 
         | This is pure speculation. My point is you can have all the
         | checklists in the world but bad design could contribute
         | significantly to a process failure.
         | 
         | It sounds like this was a test flight of new equipment on a new
         | carrier. I'd expect some design issues to be uncovered at this
         | stage.
        
           | cbtacy wrote:
           | The color in the image is misleading. They are very bright
           | red. Honestly, I have no idea how this could have happened
           | without at least two people simply not doing their job, at
           | all.
        
           | sschueller wrote:
           | I thought everything that needs to be removed before takeoff
           | needs to be bright orange/red?
        
             | dillondoyle wrote:
             | It looks red to me. And probably more contrast/color with
             | actual eyes. That photo is during the day and bright behind
             | it cameras aren't great at that.
        
             | stan_rogers wrote:
             | ...and flagged. It shouldn't just be a panel/plug, there
             | should be a ginormous length of red webbing attached with a
             | "you can't miss it" "REMOVE BEFORE FLIGHT" text in white
             | (on both sides of the webbing) as well. It's not like we
             | haven't been doing that for fifty-plus years or anything.
             | That was old news when I was in the service [mumble]
             | decades ago and our quaint training films on type were
             | nearly twenty years old at that point (which should be a
             | clue right there that I'm Canadian).
        
               | hyperbovine wrote:
               | Perhaps the millenials in charge of designing this most
               | recent fighter tired of your grandfather's rain cover
               | aesthetic, and modernized them to feature Hoefler Whitney
               | and more muted colour palette. :-)
        
               | pacificmint wrote:
               | I mean, there are certain lessons that each generation
               | seems to have to learn anew.
               | 
               | It just that one would expect this to not be one of them.
        
       | Causality1 wrote:
       | The implications, if that is the cause, are shocking. Forget
       | about the deck crew and the pilot being blind morons. It means
       | the flight computer for a plane that took twenty years and a
       | trillion dollars to develop can't detect that there's a fucking
       | cover blocking the engine.
       | 
       | How does a twenty thousand dollar sedan have a more robust
       | readiness-detection system than a hundred million dollar
       | airplane?
        
         | mrep wrote:
         | It didn't cost a trillion dollars to development. The trillion
         | dollar number everyone always loves to throw around is for the
         | total lifetime cost (i.e., to 2070) to $1.5 trillion in then-
         | year dollars which also includes operations and maintenance.
        
           | swarnie wrote:
           | I personally love that number.
           | 
           | That number has kept me employed for 7 years so far and will
           | continue paying my rent cheques long after its necessarily.
           | 
           | Long live the global murder complex.
        
           | KennyBlanken wrote:
           | The F-35B costs (currently- it's growing by the day) roughly
           | a third of a _billion_ dollars each in acquisition cost
           | alone.
           | 
           | That's over a quarter billion pounds.
           | 
           | To put that in perspective: the pre-primary and primary
           | education budget for the _entire country_ , in 2016, was 800
           | million pounds.
           | 
           | Do you think MPs will hand-wring about this plane being
           | flushed down the drain as much as they do about fiscal
           | prudence in early education expenses?
           | 
           | I wonder if UK teachers spend their personal funds on school
           | supplies like teachers in the US do.
        
             | jessriedel wrote:
             | > To put that in perspective: the pre-primary and primary
             | education budget for the entire country, in 2016, was 800
             | million pounds.
             | 
             | That doesn't sound right. This page says the UK spent 31
             | billion on pre-primary and primary education in 2020
             | 
             | https://www.statista.com/statistics/298910/united-kingdom-
             | uk...
             | 
             | (If that has a paywall, try googling for the info, which is
             | how I was able to view the page.)
             | 
             | Please help me understand the discrepancy or edit your
             | comment.
        
               | tcskeptic wrote:
               | Its not right -- there are about 4.6M primary school
               | publicly funded students in the UK.
               | 
               | Source : https://assets.publishing.service.gov.uk/governm
               | ent/uploads/...
               | 
               | The UK did not spend 173 pounds per student for a year of
               | education -- the 30B cost leads to per student spending
               | of about $6500, which is starting to approach a
               | reasonable figure.
        
         | Terry_Roll wrote:
         | So why dont they release the flight deck cctv to prove this or
         | is it more likely a crap coverup?
         | 
         | So the engine a joint effort between Lockheed (designer) and
         | Rolls Royce (builder),
         | https://en.wikipedia.org/wiki/Lockheed_Martin_F-35_Lightning...
         | makes me wonder if Rolls Royce used their turbine blades on
         | this aircrafts engine? https://www.theengineer.co.uk/rolls-
         | royce-single-crystal-tur...
         | https://www.sciencedirect.com/science/article/pii/S187770581...
         | 
         | You see the US Lockheed C-130 Hercules has a different flight
         | computer compared to the British version namely because of the
         | use of different engines, the US engines are not as powerful
         | and the USAF fly within the parameters of the flight computer,
         | but the British Lockheed C-130 has a cut down flight computer
         | which allows more risky manoeuvres because the Rolls Royce
         | engines are more powerful, so they can land and take off on
         | shorter jungle runways, stepper climbs things like that, ideal
         | for security services operations. The Apache Helicopter is the
         | same, the US engine is not as powerful as the Rolls Royce
         | engine so you can do more in the UK version of the Apache.
         | 
         | So I wonder with this one if it really is a crap coverup or
         | not? There's a lot of technology built into these things and as
         | we become more reliant on technology to help fly these things
         | instead of the more natural mechanical elements of control from
         | years gone by, there's more vulnerability being introduced
         | alongside the de rigueur complexity.
        
         | ren_engineer wrote:
         | >How does a twenty thousand dollar sedan have a more robust
         | readiness-detection system than a hundred million dollar
         | airplane?
         | 
         | because the car industry is driven by market forces, not
         | government corruption driven monopolies. I'm not sure why
         | anybody thinks the US military is anything more than a paper
         | tiger after the last few decades of failure, highlighted by the
         | failed withdrawal from Afghanistan. I feel bad for the
         | countries that got pressured into buying the F-35
        
           | Causality1 wrote:
           | I think the absolute incompetence the Navy has exhibited in
           | failures to move their ships around the Pacific without
           | running into things is a better example.
        
             | nickff wrote:
             | Ship collisions have always been a problem; the USN happens
             | to operate many large ships.
        
           | ChuckNorris89 wrote:
           | _> I'm not sure why anybody thinks the US military is
           | anything more than a paper tiger after the last few decades
           | of failure, highlighted by the failed withdrawal from
           | Afghanistan._
           | 
           | I dunno about that, but the military industrial complex made
           | absolute bank though, for which the taxpayers generously
           | picked up the tab.
        
         | elif wrote:
         | It's possible (I would say likely) that there was a warning
         | light. During normal aviation takeoffs, there are procedures
         | that govern when it is too late to abort, and procedure
         | dictates that it is safer to attempt flight. For a carrier, I
         | imagine that point-of-no-return is about a few feet from
         | stationary.
        
         | kwertyoowiyop wrote:
         | The NEXT version of the software will surely add this check!
        
           | ChuckNorris89 wrote:
           | Wait for the subscription-ware version where you need to pay
           | 2 Billion per year to the defense contractor for the feature.
        
             | kwertyoowiyop wrote:
             | That sounds like what we have now. We just haven't
             | formalized it. :-(
        
         | credit_guy wrote:
         | > a plane that took [...] a trillion dollars to develop
         | 
         | It didn't take a trillion dollar to develop. The trillion
         | dollar figure includes acquisition costs (going to 2070) as
         | well as operations and maintenance over the same period.
         | 
         | By the way, the F-35 isn't any more expensive than other
         | aircraft. For example for the latest budget proposal (2022),
         | the DoD plans to acquire 85 F-35s [1] for a total price of $85
         | BN, or about $150 MM per plane. At the same time, it plans to
         | acquire 14 tanker aircraft KC-46 for a unit price of about $180
         | MM, and 9 cargo helicopters CH-53K for a unit price of $190 MM.
         | Yes, you read that right, those are helicopters, they are not
         | attack, but cargo helicopters, and cost almost $200 MM apiece.
         | 
         | [1]
         | https://www.defense.gov/News/Releases/Release/Article/263871...
        
           | djsbs wrote:
           | Now add the expected maintenance costs over the life of the
           | aircraft.
           | 
           | - How many hours of flight can the F-35 do before it needs to
           | be hangered?
           | 
           | - How long does it take in the hanger?
           | 
           | - Can the F-35 even go supersonic without ripping off its
           | anti-radar coat (thus becoming more visible as soon as it
           | decelerates?)
           | 
           | - given the cramped space, how capable are aircraft carriers
           | at F-35 repair? How many can they do at a time? What is the
           | duty cycle of the F-35 on a carrier?
           | 
           | - Is the plane even finished the design phase?
           | 
           | The US should have bought 500 F-22 and given the Navy its own
           | carte blanc design skipping the F-35 altogether.
        
             | thereddaikon wrote:
             | "- Can the F-35 even go supersonic without ripping off its
             | anti-radar coat (thus becoming more visible as soon as it
             | decelerates?)"
             | 
             | Yes. One of the major improvements over the F-22 is the way
             | the stealth coating works. Its baked in to the skin of the
             | aircraft. It does not flake off, it does not need to be
             | constantly reapplied. The F-22 and all other prior stealth
             | aircraft, F-117 and B-2 are hangar queens because of their
             | fragile stealth coatings. This is not the case for F-35.
             | Not only is a game changer but it was also a requirement to
             | make a carrier based stealth fighter actually practical.
             | 
             | "- given the cramped space, how capable are aircraft
             | carriers at F-35 repair? How many can they do at a time?
             | What is the duty cycle of the F-35 on a carrier?"
             | 
             | Just as capable at servicing any other carrier based
             | aircraft. The F-35 its actually smaller than the super
             | hornet in every dimension so space shouldn't be a problem.
             | Its much smaller than the F-14 was. And its biggest
             | servicing issue wasn't its size but the complexity of its
             | swing wing.
             | 
             | "- Is the plane even finished the design phase?"
             | 
             | Ok, now I'm starting to wonder if you actually have
             | informed criticisms or if you are just an F-35 hater and
             | only want to spread FUD.
        
             | nradov wrote:
             | All carrier aircraft are typically brought into the hangar
             | for several hours of maintenance after every flight. But if
             | necessary the F-35B can be immediately refueled and rearmed
             | on the flight deck and sent right out again in a matter of
             | minutes.
             | 
             | Maintainers on a carrier can do fairly complex repairs,
             | including engine replacement. If they need more working
             | space in the hangar then other aircraft can be parked
             | temporarily on the flight deck.
             | 
             | The F-35 is primarily a strike fighter so supersonic speed
             | isn't that useful. The biggest problem with flying at
             | supersonic speeds is it drastically increases fuel
             | consumption, and the F-35B has a very limited fuel
             | capacity. British carriers have no tankers.
             | 
             | As long as an aircraft is still in active production the
             | design phase is never "finished". Updates will continue for
             | decades. The F-15 design is about 50 years old and it's
             | still not finished.
             | 
             | The F-22 production program was cancelled in 2011 because
             | there was just no funding available. It wasn't possible to
             | fight the wars in the Middle East, _and_ procure more
             | F-22s. Something had to give.
        
             | jonnybgood wrote:
             | > The US should have bought 500 F-22 and given the Navy its
             | own carte blanc design skipping the F-35 altogether.
             | 
             | Why? The F-22 is an air superiority fighter. The F-35 is a
             | multi-role fighter. They're built for different purposes.
             | It's crucial to understand the difference.
        
               | SkyMarshal wrote:
               | "Multirole" is just Pentagon speak for "smaller, cheaper,
               | and limited, but still stealthy".
        
               | jonnybgood wrote:
               | No, it doesn't mean that at all. It's differences can
               | range from types of munitions to avionics. The fact you
               | said a multirole fighter is more limited shows you really
               | don't know the differences. A multirole is actually more
               | capable. A multirole like F-35 can do air superiority but
               | it won't outperform an aircraft designed specifically for
               | air superiority like the F-22. The F-22 does not do air-
               | to-ground strikes. The F-35 can.
               | 
               | The multirole fighter is not a new concept.
        
               | rjsw wrote:
               | The F-22 has done air-to-ground strikes, its problem is
               | just being too expensive.
        
               | Causality1 wrote:
               | That's the issue, trying to make one airframe fill three
               | drastically different roles and hence failing at all of
               | them. Every time the F-35 turns in a miserable
               | performance report its mission profile is changed to make
               | it look like less of an embarrassment.
        
               | thereddaikon wrote:
               | The F-35 wasn't intended to do everything. There are
               | certainly those who have tried to make it do everything
               | but that wasn't the intent of the program.
               | 
               | For example it was never meant to be an air superiority
               | fighter. While it does have a great radar, missiles and
               | even a gun on the air force version it was never meant to
               | fill the role of an F-15 or F-22. The air force wants to
               | replace the F-16 with the F-35.
               | 
               | The new Digital Century program shows the AF hasn't
               | forgotten about the importance of dedicated platforms.
               | However given the cost and development times of modern
               | aircraft it takes a new approach to make them practical.
               | 
               | The navy has also been clear about the role of the F-35.
               | It wont ever be used as an F-14 replacement. They are
               | actually working on that separately.
               | 
               | As for other customers, different militaries have
               | different missions and needs. It is true the F-35 is
               | capable of filling most roles if needed. Some nations may
               | rely on it as their air defense backbone. That's a
               | secondary capability but when you only have the budget
               | for one fighter and this is the only 5th gen on the open
               | market then its defacto the best option.
        
               | dragontamer wrote:
               | In Hearts of Iron, you play as a country during WW2.
               | 
               | As Germany, you face threats from Britain (ships,
               | fighters and bombers), France (mostly land forces) and
               | Russia.
               | 
               | What do you build?
               | 
               | Air superiority fighters win dogfights (F22 today) but
               | are only useful vs Britain.
               | 
               | Close Air Support (A10 today) beat tanks, but lose in the
               | air.
               | 
               | Multirole fighters (F35 today) work in all three
               | theaters, but not as well as the specialists.
               | 
               | Given that the next war might be vs Russia (Crimea
               | situation), Taiwan / China (Naval), or maybe even
               | terrorists in Africa or Middle East, multirole is the
               | obvious airplane to build today.
               | 
               | -----
               | 
               | So Air Force wants a multirole fighter that can take off
               | from airstrips / airports.
               | 
               | Marines want a multirole fighter that can take off of
               | Wasp Amphibious Assault Ships (ramp launch)
               | 
               | Navy wants a multirole fighter that can take off of their
               | Aircraft Carriers (catapult launch).
               | 
               | This gives F35A, F35B, and F35C variants. But since they
               | all wanted a multirole fighter, it makes sense to try to
               | make the three variants as similar as possible. You want
               | to standardize the gun, standardize the bullets,
               | standardize the fuel, standardize the software.
        
           | verytrivial wrote:
           | Imagine if this level of corporate welfare went towards
           | social care, the environment or education. What a racket.
        
             | dillondoyle wrote:
             | Oh god let's please not add any for-profit subsidies to a
             | broken pharma and healthcare system. It's a plague. I hope
             | the drug price negotiation becomes law and actually saves
             | as much as CBO score projects. I am less hopeful we'll ever
             | be able to get a better healthcare system in the US
             | 
             | I'm 100% for clean energy though. But probably not going to
             | happen; Manchin said specifically he doesn't want to
             | subsidize 'what the companies are already doing.' Yet he's
             | good with a bunch of coal and coal employee subsidies...
             | 
             | In a lot of circumstances I'd probably agree with his
             | position but this is a crisis. It's like saying we
             | shouldn't have invested in helping develop Covid vaccines
             | because PHARMA is already doing it on their own.
             | 
             | There is a greater survival and health risk to think of. If
             | money can help we should spend it.
        
             | FPGAhacker wrote:
             | In the US, defense spending is ~700 billion, whereas the
             | level of social care spending is about ~3000 billion.
             | 
             | Given the relative effectiveness of US healthcare and
             | education, vs the US military, I'd sooner call US social
             | spending a racket.
        
               | xxpor wrote:
               | That includes Social Security, which is wildly
               | successful.
        
               | Alupis wrote:
               | > That includes Social Security, which is wildly
               | successful.
               | 
               | Wildly successful at giving away other people's money,
               | but not wildly successful at sustaining itself without
               | congress intervention every few years, to the point where
               | the fund would collapse and cease to exist without
               | intervention (ie. capital injection, ie. printing money).
               | 
               | I don't count that as "wildly successful" by any means.
        
               | missedthecue wrote:
               | You could say the same thing about the military. It's
               | been 76 years since 1945, and the US is still on top.
        
             | mc32 wrote:
             | I think they are like supercars. They cost a lot but that's
             | because two things: low volume and custom parts or
             | components and special requirements.
        
             | whywhywhywhy wrote:
             | Imagine how easy life would be if we didn't pay over the
             | odds for either.
        
           | jjk166 wrote:
           | For anyone else confused, it's 85 F-35s for $12B, not $85B
           | 
           | It's also worth noting that these other aircraft are widely
           | criticized as being excessively expensive as well, mostly
           | because of the exact same issues with the acquisition
           | process. For example the CH-53K is supposed to cost half of
           | that, but because only 9 are being purchased this year the
           | fixed costs aren't as amortized as predicted. And that's
           | really the crux of it: the F35 acquisition was always going
           | to be an 11 figure program, but the leading digit could have
           | been a 1 instead of a 4, the price tag is the right order of
           | magnitude, but there were still hundreds of billions of
           | dollars wasted due to mismanagement.
        
             | colechristensen wrote:
             | You can say wasted due to mismanagement and not be wrong
             | but also designing, building, and maintaining warplanes are
             | among the most complex tasks humans have ever done, and
             | I've been on plenty of teams that could barely manage a
             | CRUD webapp so it's not like being efficiently organized is
             | easy and everywhere.
             | 
             | It should be impressive that such a thing is possible at
             | all.
             | 
             | And, to be honest, it's partially a jobs program to keep
             | engineers employed and experienced in case there is a real
             | need for immediate defense work.
        
               | symlinkk wrote:
               | Is it really that complex? The best software engineers go
               | to FAANG, not defense companies.
        
               | HeyLaughingBoy wrote:
               | What do you base this assertion on?
        
               | missedthecue wrote:
               | Prices?
        
               | Zancarius wrote:
               | Aircraft engineering isn't all software though. There's a
               | _significantly non-trivial part_ that is hardware design
               | (arguably the bulk of it), with incredibly tight
               | tolerances, and often unique alloys. All of which can
               | make or break a design.
               | 
               | Even just a single component, like the engine, is a
               | massive engineering undertaking. If the company
               | developing the powerplant under-delivers the entire
               | program can be a bust.
        
         | kube-system wrote:
         | > It means the flight computer for a plane that took twenty
         | years and a trillion dollars to develop can't detect that
         | there's a fucking cover blocking the engine.
         | 
         | Of course the computer "could" do it. And maybe it did. That
         | doesn't mean that precautions were followed, or that some sort
         | of lock out feature for this would even be desirable design
         | feature for a war machine to begin with.
        
         | jjk166 wrote:
         | Nothing says the plane couldn't detect the lack of airflow, but
         | when you take off from a ship and your engines don't work
         | there's not a lot your flight computer can do for you.
         | 
         | Specifically, according to the press release, the pilot tried
         | to abort takeoff while still on the deck but ran out of runway,
         | meaning the plane was moving for at most a few seconds before
         | the issue was noticed.
        
           | gregschlom wrote:
           | Well then maybe it's worth investing in a cover detector
           | switch, just like my car can tell me I forgot to close the
           | gas tank cap.
        
             | kube-system wrote:
             | You car probably doesn't have a switch for this. It detects
             | that there is a leak in the tank when running an emission
             | compression/vacuum test on the tank. And if this is the
             | case, you can pull over safely and put it on. Your car
             | doesn't crash.
        
         | kitd wrote:
         | Note that the article only states that the ground crew found
         | the cover floating in the water. It didn't actually say the
         | aircraft took off with it on.
         | 
         | It may be, eg, that it had been taken off properly but got (or
         | was left) loose on the flight deck and blew up into the intake
         | of the jet as it was taking off.
         | 
         | Something for the ground crew to fix, for sure, but not
         | necessarily a catastrophic failure of standard checking
         | procedures.
        
         | ChuckNorris89 wrote:
         | _> Forget about the deck crew and the pilot being blind
         | morons._
         | 
         | I thought aviation is _THE_ industry that runs on procedures
         | and checklists you need to tick before and after each flight to
         | make sure the even if you 're a complete klutz, nothing like
         | this can ever happen. Did that go out the window?
         | 
         |  _> It means the flight computer for a plane that took twenty
         | years and a trillion dollars to develop can't detect that
         | there's a fucking cover blocking the engine._
         | 
         | This is pure gold. Even my robovac can detect when something is
         | chocking the suction intake and shut down and send me a
         | notification on my phone. The fact that a trillion dollar
         | weapon missed this feature is hilarious.
        
           | kamaal wrote:
           | >>I thought aviation is THE industry that runs on procedures
           | and checklists you need to tick before and after each flight
           | to make sure the even if you're a complete klutz, nothing
           | like this can ever happen. Did that go out the window?
           | 
           | Just a day back they dropped a $10 billion(20 years in
           | development) origami transformer-like robot telescope(jwst)
           | on the floor because some one forgot to secure a clamp well
           | enough to hold the piece in place.
           | 
           | So I'm guessing regardless of whatever people say about six
           | sigmas, checklists and procedures, human errors just continue
           | to happen regardless.
        
             | kipchak wrote:
             | Something similar happened with a NOAA satellite in 2003.
             | 
             | https://space.stackexchange.com/questions/1783/was-the-
             | noaa-...
        
           | colechristensen wrote:
           | There is always a nonzero error rate and always an error that
           | never occurred for anybody to check for.
        
           | Someone1234 wrote:
           | The article says that this was a checklist item for both the
           | ground crew and the pilot, and yet it wasn't spotted/fixed
           | (did they even conduct the checks?). Multiple heads are
           | definitely going to roll on this one.
           | 
           | But two things can be true:
           | 
           | - Procedures/checklists should have stopped this (and should
           | be the primary way).
           | 
           | - The flight computer should know that air flowing into the
           | engine is unusual when a cover is blocking it.
           | 
           | Also keep in mind that if both are fixed, this would be fixes
           | from two _different_ organizations (the British Navy and
           | Lockheed Martin /F-35B's manufacturing chain).
           | 
           | This happened at peace time. I can imagine during a stressful
           | wartime situation human error is more likely to occur, which
           | is even more reason why computer sanity checks can be
           | advantageous.
        
             | ChuckNorris89 wrote:
             | _> The article says that this was a checklist item for both
             | the ground crew and the pilot, and yet it wasn't
             | spotted/fixed (did they even conduct the checks?). Multiple
             | heads are definitely going to roll on this one._
             | 
             | As it should be. If you're just ticking boxes on a
             | checklist of a weapons system responsible for life and
             | death situations, without actually performing said checks,
             | you shouldn't be entrusted with this job. This is beyond
             | incompetence.
        
               | elliekelly wrote:
               | It depends on how the checklist was structured/phrased
               | though doesn't it?
               | 
               | "Check for rain cover" isn't as clear as "Remove rain
               | cover from engine and stow in compartment labeled 'Rain
               | Cover'."
        
               | tamaharbor wrote:
               | In all fairness, Lockheed Martin made the cover bright
               | red.
        
             | foxyv wrote:
             | There are a ton of ways that checklists can fail. For
             | instance, when an item is 2x instead of separate items for
             | left and right. When items are done in a series instead of
             | one at a time. When time constraints force a rush. When
             | items aren't read aloud. When checklists aren't completed.
             | When those responsible for completing the items aren't
             | present for the checks. When no one is following behind
             | double checking each item.
             | 
             | There is a whole science behind checklists like this.
             | Surgeons have been learning this lesson for over a decade
             | now: https://www.advisory.com/daily-
             | briefing/2015/08/04/checklist...
             | 
             | Also it is possible that the cover did not restrict air
             | flow until the aircraft entered a cruise flight regime or a
             | certain altitude. Often aircraft will have different intake
             | bypasses for different flight regimes. However, a cover
             | like this SHOULD have a pin and momentary switch similar to
             | lockouts for flight controls. But if the cover was an
             | afterthought, implemented by crews and not the engineers,
             | that may not have been accounted for.
        
               | kamaal wrote:
               | Things can get complicated when checklists have if-else-
               | branches and loops.
               | 
               | Anything that has a list of lists, and if-else-branches
               | can be really hard to get right. You walk into one wrong
               | branch due to human error, mistakes just multiply from
               | there.
               | 
               | Also the worse thing is- you are confident that you are
               | doing the right thing, while just making more mistakes.
        
               | foxyv wrote:
               | Don't forget checklist and alarm fatigue. When an alarm
               | goes off every 2 seconds "Check air intake" because of
               | changes in atmospheric pressure etc... When a checklist
               | is 200 items long and your commander is asking why you
               | aren't in the air yet. Organizational failure, when every
               | other pilot in the wing is waiting to taxi because they
               | skimmed the checklist and you are still checking freeze
               | plugs and fuel.
               | 
               | Anyone in charge of this sort of mission critical stuff
               | has to be willing to take it on the chin to ensure
               | safety. If top brass isn't willing to take "safety" as an
               | excuse for a delay or cancellation it's just going to
               | propagate down and cause an accident.
        
               | hermitdev wrote:
               | > Also it is possible that the cover did not restrict air
               | flow until the aircraft entered a cruise flight regime or
               | a certain altitude
               | 
               | Article states that the pilot attempted to abort takeoff,
               | but ran out of runway on the ship. So, apparently the
               | pilot knew something was wrong pretty soon after
               | initiating takeoff.
               | 
               | edit: grammar
        
               | dmix wrote:
               | The aircraft was doing a VTOL take off. Maybe the upwards
               | part went fine until it was required to start shifting
               | forward?
        
               | rjsw wrote:
               | It wasn't doing a vertical take off. It accelerates along
               | the flight deck and uses the ski-jump at the bow to help
               | it get airborne.
        
           | glitchc wrote:
           | Carrier runways use a slingshot to launch aircraft, it's not
           | an unaided takeoff, the runway is not long enough to develop
           | sufficient airspeed to take off on engine power alone. By the
           | time the engine reports a lack of airflow in the intake, it
           | might already be too late.
        
             | nradov wrote:
             | That carrier lacks a catapult.
        
           | morcheeba wrote:
           | >Even my robovac can detect when something is chocking the
           | suction intake and shut down
           | 
           | I'm not sure I want my plane to just shut down if it ingests
           | something.
        
             | ChuckNorris89 wrote:
             | And robovacs don't need to keep their motor running since
             | they're not airborne so why the odd comparison? Obviously
             | they both should react differently to intake blockage, my
             | point was that even consumer devices have such detection
             | features.
        
             | Causality1 wrote:
             | I do, if it's still on the ground when it happens.
        
               | CobaltFire wrote:
               | I get your point, but no you don't on an aircraft like
               | this.
               | 
               | If you are on a takeoff roll with a heavily fueled and
               | armed aircraft and it detects an ingestion it has no idea
               | if running until it blows up will save lives or not. The
               | pilot needs to make that call.
               | 
               | There are significant failures here, but without being on
               | the scene or seeing the write up I can't say what they
               | are beyond the failure of both the ground crew and the
               | pilot.
               | 
               | This is speaking as a 21 year Naval Aviation Senior
               | Enlisted who has spent plenty of time on the flight deck.
        
           | AdrianB1 wrote:
           | Aviation is the industry of procedures and checklists because
           | it is more and more complex, never simpler. The complexity at
           | some point is so big, people just start taking shortcuts,
           | especially when they believe their experience will help them
           | cutting corners.
           | 
           | Also aviation is not special in any way when it comes to
           | human error. I know details never published about aircraft
           | accidents in my country (pilots talk on the airfield, it
           | helps us knowing what happened and what to avoid) and most
           | were incredibly stupid human errors. I know people who
           | crashed more than once with planes and kept doing stupid
           | things, I personally know 4 people that crashed planes, one
           | of them 3 times, and keep doing it. Pilots are not special,
           | not even above average, and they keep doing things that are
           | not expected. Being tired, bored or distracted makes it
           | worse.
        
         | elliekelly wrote:
         | As someone who knows nothing about aviation or engineering I'm
         | a little surprised that a "rain cover" for a fighter jet engine
         | is even a thing. Does that mean these jets can't fly in the
         | rain?
        
           | yostrovs wrote:
           | Any openings on planes are usually closed when parked in
           | order to prevent birds and other critters from getting inside
           | and causing random damage.
        
             | rwmj wrote:
             | They lost a B-2 bomber because of moisture in a sensor.
             | ($1.4 billion - oops). https://en.wikipedia.org/wiki/2008_A
             | ndersen_Air_Force_Base_B...
        
         | jollybean wrote:
         | They are not morons. These things happen all the time.
         | 
         | The issue is the fact that whereas in 1945 fighters cost about
         | as much as a few 'fancy cars', fighters are now 200 homes. Of
         | course, they should be thought of as 'flying weapons platforms'
         | ... but still.
         | 
         | $16M F16 would be one thing, but a $120M piece of kit ... that
         | hurts.
         | 
         | I'm wondering how well the 'downgraded' variations of F18++ or
         | 'some new fighter' will fill the gap or if Boeing can make a
         | 'cheap F35'.
        
           | nradov wrote:
           | The F-18 is totally incapable of operating from UK Royal Navy
           | carriers. There are no serious plans to build some new manned
           | fixed wing VSTOL fighter. The F-35B will be the only
           | available option for the next 20+ years.
        
           | hasdf wrote:
           | to my understanding the f35 is actually pretty price
           | competitive with other offerings. The price keeps going down
           | as more and more are sold
        
       | marcodiego wrote:
       | How to shoot down a F-35B crash:
       | 
       | "Dealing with what caused the F-35B crash, the British media
       | outlet The Sun reports that it may have been a "cheap plastic
       | cover" that was left on during take-off."
       | 
       | Of course, this may be a simple strategy, red herring, to fool
       | unfriendly nations, but...
       | 
       | Also, makes me think about the MiG-29 which has special opening
       | on the top of the engines so it can tak-off/land on unpaved
       | runways: https://www.quora.com/How-is-the-Mikoyan-MiG-29-able-to-
       | take...
        
       | js2 wrote:
       | > Anyway, let's wait for the official investigation to provide
       | more confirmed details about the incident and its root cause(s).
        
       | [deleted]
        
       | NikolaeVarius wrote:
       | I highly doubt the initial story since it doesn't really make
       | sense. There are tons of checks before takeoff. Jets also go full
       | throttle during takeoff so this isn't something that would just
       | show up during the roll
        
         | trackone wrote:
         | I agree with you, this doesn't make much sense. The source
         | quote is saying that someone saw a red cover in the water. How
         | would the cover survive going through an engine? It should be
         | shredded. Also, if the cover was left on it would have been
         | sucked into the engine as soon as the pilot turned the engines
         | on or when he when to full power before taking off. Makes more
         | sense if a cover was left unsecured on the flight deck and was
         | sucked in during take off. It still would be shredded though I
         | would think.
        
         | fnord77 wrote:
         | Is there a roll on an aircraft carrier?
        
           | yborg wrote:
           | There is on this one, it's a jump ramp carrier, not a
           | catapult launch.
        
         | davewasthere wrote:
         | Yeah, I can't see it quite happening the way the Sun intimates.
         | Can't rule out FOD ingestion, but highly impropably could it
         | have been an intake covers left on.
        
       | tibbydudeza wrote:
       | Now we need a rain cover detection sensor.
        
       | kwertyoowiyop wrote:
       | Surely there is video?
        
         | nradov wrote:
         | Yes aircraft carriers always have video cameras running during
         | flight operations. However cameras mounted on the islands might
         | not have a clear view of some sort of cover left on an
         | aircraft.
        
         | dotancohen wrote:
         | I am serious.
        
       | [deleted]
        
       | thih9 wrote:
       | This is reported by The Sun; I'd apply Betteridge's law [1]
       | generously. The crash may have been caused by the rain cover, but
       | just as well there might have been a different reason.
       | 
       | > Sailors saw a red cover floating in the sea after the stealth
       | jet splashed into the Mediterranean.
       | 
       | It could have been anything, from a red herring to a literal red
       | herring.
       | 
       | [1]: https://en.wikipedia.org/wiki/Betteridge's_law_of_headlines
        
       | f322323jiojio32 wrote:
       | Russian submarines are probably already swimming around
       | collecting parts of the plane.
        
       | tartuffe78 wrote:
       | Next time we have a real war I have a feeling there will be some
       | very interesting dumb "hacks" used against all of these smart
       | weapons.
        
         | Someone1234 wrote:
         | The military is bored and loves to spend money on shinies.
         | 
         | Everyone works hard to un-learn the most important lesson of
         | war: In war, more of something beats less of something.
         | 
         | And it isn't simply a "morer is betterer" argument, even
         | strategically if you can place assets in multiple concurrent
         | locations even if those assets are "dumber" then you're forcing
         | the enemy to split their force into multiple beachheads.
         | 
         | Embraer EMB 314 Super Tucano ($18M~) Vs. F-35A ($79M~). One
         | F-35A obviously beats one Super Tucano but does it even have
         | enough weapons onboard to beat 4.3? What if you split your
         | Super Tucanos between two locations, which one is the F-35A
         | going to defend?
         | 
         | And the Super Tucano is even the endgame here, the endgame is
         | drone swarms. $1M~/ea and you have a 79-1 ratio, and it is
         | indefensible and laughably so.
        
           | nradov wrote:
           | The primary threat is surface-to-air missiles, not other
           | aircraft. A Super Tucano is simply not survivable against
           | modern SAMs, nor does it have the sensors necessary to attack
           | hardened ground targets. The F-35 at least has a chance.
        
             | Someone1234 wrote:
             | The F-35 isn't completely stealth, it only offers a reduced
             | sized signature for an aircraft of its size (no aircraft is
             | completely, but the F-35 isn't even the best the US has in
             | terms of stealth it isn't even in the top three).
             | 
             | Before stealth small nimble aircraft avoided anti-aircraft
             | fire by flying low where the horizon and or terrain would
             | keep them shielded or provide physical barriers against
             | missile intercept. That of course requires good low
             | altitude, long duration flying which is also something the
             | Super Tucano happens to excel at.
             | 
             | I'd argue that the SAMs is an argument for "morer is
             | betterer" since you're essentially pretending that the F-35
             | has perfect stealth instead of limited stealth, and relying
             | on it being never shot down as your win condition (as
             | opposed to building in losses and utilizing strategies not
             | dependent on a technological advantage).
        
               | nradov wrote:
               | That's just complete nonsense and displays a fundamental
               | misunderstanding of reality. There is no such thing as
               | "completely stealth" or "perfect stealth" , just varying
               | degrees of observability. Terrain masking is only even
               | possible in limited areas, and flying at low level (dense
               | air) drastically reduces range. Turboprop aircraft like
               | the Super Tucano also can't carry the sensors necessary
               | to strike certain targets in all weather conditions;
               | there's no place to even put a large radar.
               | 
               | The days of building mass quantities of cheap, expendable
               | tactical aircraft are simply over. Even if we were
               | willing to tolerate higher aircrew casualty rates that
               | approach is no longer cost effective. It's just too
               | expensive to train more pilots and maintain larger
               | numbers of aircraft in peacetime even if the initial
               | procurement cost is lower. You have to look at the full
               | lifecycle cost to achieve the target level of capability.
               | 
               | For naval aviation the constraints are even stricter. A
               | carrier can only fit a fairly small air wing, so it's
               | essential that every aircraft be highly capable. Even if
               | that means the aircraft are extremely expensive, it's
               | still more cost effective than building another carrier.
        
           | KennyBlanken wrote:
           | The F-35 is useless for long engagements, dead if it gets
           | into a dogfight, and can't fly near thunderstorms or it might
           | explode.
           | 
           | This is assuming it doesn't suffocate its pilot to death,
           | because Lockheed still can't get the oxygen system to work
           | properly.
           | 
           | The finest plane $350M (and climbing) can buy (for the F35-B
           | variant. The A variant is down to "just" $100M or so.)
        
           | kcb wrote:
           | Not this again. You'd have to have an army of suicidal
           | fanatics to get them to take off in Super Tucanos against a
           | squadron of F-35s or any American jet really. The F-35 is
           | just going to BVR lob unavoidable AMRAAMs. Add some
           | F-15/18/22s to the mix as well and it will be a good old
           | turkey shoot.
           | 
           | > And the Super Tucano is even the endgame here, the endgame
           | is drone swarms. $1M~/ea and you have a 79-1 ratio, and it is
           | indefensible and laughably so.
           | 
           | "Drone Swarms" You either are just describing guided missiles
           | which already exist or an actual drone aircraft capable of
           | threatening an F-35 which would require similarly capable
           | sensors and engines. It's not going to cost $1M.
           | 
           | Take this as a grain of salt because it's a player in a sim
           | fighting AI. But I love it as an example of what a lone
           | fighter can do against less capable aircraft.
           | https://www.youtube.com/watch?v=w5FrxsBG_H8
        
           | 2OEH8eoCRo0 wrote:
           | > One F-35A obviously beats one Super Tucano but does it even
           | have enough weapons onboard to beat 4.3?
           | 
           | https://www.raytheonmissilesanddefense.com/news/feature/armi.
           | ..
           | 
           | "The F-35 can carry up to two AIM-9X missiles on its wings
           | and four AIM-120 AMRAAM missiles internally."
           | 
           | Also- in the future:
           | 
           | "Lockheed Martin is developing a weapon rack called Sidekick
           | that would enable the internal outboard station to carry two
           | AIM-120s, thus increasing the internal air-to-air payload to
           | six missiles"
           | 
           | So yes.
        
         | ryanchants wrote:
         | We already had that in Afghanistan. Our LAVs were being
         | defeated by IEDs, so we spent a lot of money making mine
         | rollers. The mine rollers were then defeated with 10 cents
         | worth of lamp cord to separate the pressure plate from the
         | explosive.
        
           | echelon wrote:
           | In Afghanistan we were spending lots of money to not kill
           | civilians and cause a PR nightmare. If we didn't care, we'd
           | have carpet bombed the place. Or developed and used chemical
           | weapons.
           | 
           | In a real war, we'll be using tactical (not strategic) nukes
           | to take out carriers and bases and supply lines, not toys
           | that avoid collateral damage.
           | 
           | If shit hits the fan, the strategic nukes come out and we all
           | die.
        
             | swarnie wrote:
             | > to not kill civilians and cause a PR nightmare
             | 
             | Estimates sit at around 240,000 deaths, great job.
             | 
             | Still better then the Iraqi genocide mind....
        
               | adventured wrote:
               | > Estimates sit at around 240,000 deaths
               | 
               | You're of course referring to total estimated deaths over
               | 20 years from all supposedly war-related causes (which
               | includes poverty), not civilian deaths directly
               | attributable to the US. The Taliban - as the blood-
               | thirsty conquering force attempting to enslave the
               | population of Afghanistan for the past several decades -
               | is responsible for most of those deaths.
               | 
               | It's funny how many people try to pretend the Taliban
               | don't exist, their murders don't exist, the consequences
               | of their conquering don't exist, and their aims don't
               | exist, when it's convenient.
               | 
               | The actual civilian deaths in Afghanistan by the US is a
               | very small fraction of the number you're quoting, which
               | is the point of the parent comment. The vast majority of
               | violent civilian deaths were from the Taliban and
               | associated groups, via suicide bombings and other
               | intentional mass murder events.
               | 
               | And the vast majority of all deaths during the Iraq civil
               | war, were Iraqi on Iraqi murders. The US stepped in-
               | between the warring factions and tried to stop it, which
               | cost a lot of US blood and treasure.
               | 
               | This isn't hidden magic information. It's right there in
               | the estimates along with the number you quoted out of
               | context. They break out how they arrive at the death
               | totals.
        
               | swarnie wrote:
               | This is a lot of words to say:
               | 
               | "We destabilised a region and are responsible for the
               | MASSIVE number of civilian deaths as a result."
        
               | hindsightbias wrote:
               | The US destabilized Iraq, leading to the Civil War. Not
               | like they're innocents in the matter.
        
               | 2OEH8eoCRo0 wrote:
               | Compare to the Soviet-Afghan war where the Soviets were
               | not so nice.
               | 
               | https://en.wikipedia.org/wiki/Soviet%E2%80%93Afghan_War
               | 
               | > Civilians: 562,000-2,000,000 killed
               | 
               | Most civilian deaths during the US war in Afghanistan
               | appear to be from the Taliban themselves.
               | 
               | https://en.wikipedia.org/wiki/Taliban
               | 
               | > According to the United Nations, the Taliban and their
               | allies were responsible for 76% of Afghan civilian
               | casualties in 2010, and 80% in 2011 and 2012.
        
             | sofixa wrote:
             | That's naive. Strategic and tactical bombing did jack shit
             | besides kill or at least make life miserable for lots of
             | civilians, and destroy lots of land for the foreseeable
             | future in Vietnam.
             | 
             | Afghanistan is highly mountainous. Carpet bombing doesn't
             | work very well for caves.
        
               | dragontamer wrote:
               | We pulled our punches in Afghanistan.
               | 
               | Commanders on the ground were asking for air-dropped
               | landmines to cover the areas that Bin Laden could have
               | been using as an escape in Tora Bora in December 2001.
               | Air-dropped land-mines would have made navigating those
               | mountains much more difficult for Bin Laden, and may have
               | killed him on his escape.
               | 
               | https://en.wikipedia.org/wiki/GATOR_mine_system
               | 
               | ---------
               | 
               | They may use IADs, but we have far better equipment for
               | that strategy. We can deploy our mines from airplanes and
               | just blanket an area if we so choose. But of course: this
               | strategy means killing innocent civilians who
               | accidentally walk on the mines.
               | 
               | --------
               | 
               | Difficult Terrain works for both sides. Sure, its
               | difficult for us to move in, but that also makes it
               | difficult for the enemy to move around. Doubly so if
               | landmines are secretly littering areas.
        
             | jason-phillips wrote:
             | > the strategic nukes come out and we all die
             | 
             | To borrow from the Bronze Age conflicts between the
             | Egyptians, Hittites, et al, you don't want to annihilate
             | your adversary because you still have to trade with them.
             | Wars are just a strategy to establish a more favorable
             | trading position.
        
               | fnord77 wrote:
               | and purge excess males from the population
        
               | sterlind wrote:
               | except when it comes to Carthage, then you have to salt
               | the earth to shut Pliny up.
        
       | N19PEDL2 wrote:
       | -- Possible stupid question here (apologize, I'm not an expert)
       | --
       | 
       | How can a cheap plastic cover block the engines of a fighter
       | aircraft? Even if they forget to take it off, shouldn't it be
       | destroyed by the jets?
        
         | jaywalk wrote:
         | Not a stupid question. The explanation doesn't make sense, for
         | many reasons. A large one being the sheer number of people who
         | would have to be blind to a red cover over the engine intake
         | that they all know is not supposed to be there.
        
         | yborg wrote:
         | This article is literally repeating an article from The Sun, a
         | tabloid with a better track record of reporting on royals
         | caught on holiday with their knickers off.
         | 
         | There are a lot of covers on ports and weapons on a combat
         | aircraft sitting on the flight deck, the implication is that it
         | was the inlet covers, which is impossible, the engine wouldn't
         | have operated with those on and they are kind of obvious. It's
         | much more likely this was a cover on something like a pitot
         | tube or AoA sensor.
         | 
         | It's also possible that something just blew off the deck and it
         | had nothing at all to do with crash, The Sun is reporting on
         | some hot tip from the shipboard rumor mill, not the Ministry of
         | Defense.
        
         | toss1 wrote:
         | It's probably not too much of a conjecture to assume that these
         | fit in front of the stator vanes and would be effectively
         | supported by them, so would not come in contact with the the
         | rotating turbine blades. Even if the turbine blades could
         | create a vacuum, the maximum pressure it would have to hold is
         | 14 pounds per square inch bridged between the vanes. I'd also
         | guess that "cheap" is relative and they are using something
         | between high-end commerical and engineering-grade plastic
         | (still way cheap compared to the composites on the aircraft),
         | and that this could withstand the pressures for at least the
         | few seconds/minutes it took to fire it up and toss it in the
         | drink.
         | 
         | I'm more surprised that they didn't notice it in firing up the
         | engines - don't they run it briefly to full throttle as part of
         | their checks? Seems it would at least sound badly off-tune, but
         | what do I know...
         | 
         | Major fck-up all around...
        
           | ben7799 wrote:
           | None of it makes any sense at all.. there's no way one of
           | those covers can stay on during engine startup without a
           | million warning lights going crazy in the cockpit, there's no
           | way the cover could possibly not get ingested during an
           | engine runup.
           | 
           | And this was a carrier takeoff, so the engines would have
           | been held at maximum thrust prior to launching off a catapult
           | and possibly would have been run at afterburner as well. The
           | inlet flow for that would develop far more than 14psi as the
           | volume of air ingested is enormous. The mass of air ingested
           | is measure in tons per second.
           | 
           | I think this is just incompetent journalists. Not that I've
           | ever done pre-flight on an F-35 but there are probably MANY
           | protective covers that have to be removed during preflight.
           | 
           | It most likely was another cover left on which did not impede
           | takeoff but threw the systems for a loop after takeoff and
           | the pilot wasn't well trained enough to figure out an
           | emergency procedure on such short notice.
        
             | Metacelsus wrote:
             | >The inlet flow for that would develop far more than 14psi
             | as the volume of air ingested is enormous.
             | 
             | The max difference is 14 psi because that's atmospheric
             | pressure.
        
             | isthisnametaken wrote:
             | HMS Queen Elizabeth doesn't have a catapult.
        
               | ben7799 wrote:
               | Which of course means the engine had to have been at full
               | thrust.
        
             | toss1 wrote:
             | Yes, this does make little sense at all
             | 
             | If it is actually a full inlet cover, there will be _zero_
             | airflow, so just < 14psi pressure on the cover. (I was just
             | answering how it could avoid being ingested if it was a
             | full cover.)
             | 
             | If it is some other smaller cover on some auxiliary inlet,
             | it might make more sense, as it could definitely screw up
             | the sensors, airflow, whatever, and not get ingested.
             | 
             | I'm sure we'll all be really interested to see what really
             | happened, 'tho I'm not sure we ever will.
        
         | rootusrootus wrote:
         | Agreed. In the past, people have been sucked into the intake of
         | jets on a carrier, I don't think a canvas rain cover is going
         | to be able to block the intake. At worst maybe it'll scratch up
         | the blades on the way through. Hell, I half expect the covers
         | are designed exactly so they aren't substantial enough to
         | damage the engine if they get sucked in by accident.
        
       | LatteLazy wrote:
       | If the source here is The Sun then we should really not take it
       | at all seriously. The Sun are about as reliable as Reddit
       | comments for factual accuracy.
        
       | immmmmm wrote:
       | I understand now better why my country (Switzerland) wants to
       | purchase 30-ish of those for "National Skies Protection". It is
       | well in line with their past strategies and accomplishments:
       | 
       | 1) Provide a sky patrol, but on only on office hours (9 - 17).
       | 
       | 2) Buy for 1B CHF worth of radar, that would unfortunately lock
       | on _cows_ pasturing.
       | 
       | 3) Buy for 0.5B CHF worth of software, then discard it because
       | it's incompatible.
       | 
       | 4) etc, etc, etc ....
        
         | swarnie wrote:
         | Could you possibly adopt the Irish model and just get someone
         | else to do it?
         | 
         | Germany have a few working planes i think.
        
           | dotancohen wrote:
           | > Germany have a few working planes i think.
           | 
           | Oh, yes, history has proven that we want cats guarding the
           | milk, ahem, Germans protecting other European nations from
           | invasion. ))
        
             | saiya-jin wrote:
             | We are well past that mentality here. Germans basically
             | keep EU going not only financially which I consider a win
             | overall for Europe despite its drawbacks.
             | 
             | Not another Versaille hanging over them to humiliate and
             | keep the nation poor to piss off somebody down the line.
        
               | dotancohen wrote:
               | Yes, of course, I'm well aware that Germany of today is
               | not the Germany of 1939. Otherwise I wouldn't have Bosch
               | appliances at home. ))                 > Germans
               | basically keep EU going not only financially
               | 
               | This could be interpreted as meaning that Germany _has_
               | conquered all of Europe, finally!
        
               | swarnie wrote:
               | It was intentionally tongue in cheek.
               | 
               | I love the EU nations online =)
        
             | benjamir wrote:
             | Indeed! Let's protect our col...common wealth ourselves!
        
         | option_greek wrote:
         | (1) is hilarious. Do they also expect enemy combatants to make
         | an appointment and provide the location of the meet :D
        
           | Sharlin wrote:
           | They require strict observation of Robert's Rules of
           | Engagement.
        
           | SllX wrote:
           | They're a neutral nation surrounded by countries which are at
           | the moment friendly. Neutrality incentivizes them to stay
           | armed and to do their patrols but Switzerland has no reason
           | to expect a war from France, Germany or Italy anytime soon.
        
             | dane-pgp wrote:
             | > no reason to expect a war from France, Germany or Italy
             | 
             | Liechtenstein, on the other hand...
             | 
             | https://www.warhistoryonline.com/history/witzerland-
             | invaded-...
        
           | immmmmm wrote:
           | it was subcontracted to france and italy. i think they now do
           | provide this service 24/7 due to _minor_ backlash. however,
           | the time a jet is in the air, the  "enemy " is already in
           | another country.
        
         | brutusborn wrote:
         | Do you have more info on (2)? I couldn't find any info from a
         | quick google search.
        
           | immmmmm wrote:
           | yes, in french, via ggl translate:
           | 
           | "Apparently it works in the plains but in the mountains, when
           | for example a cow moves on the slopes, the radar identifies
           | the animal as an enemy object", explained the Minister of
           | Defense, Ueli Maurer.
           | 
           | to my knowledge, no cows have been hit by missiles so far.
           | 
           | https://www.rts.ch/info/suisse/6619651-un-nouveau-radar-
           | de-l...
        
         | pie42000 wrote:
         | I mean as a swiss person, your biggest industry (watches)
         | exists almost entirely out of "it looks cool". Rich Militaries
         | buy the F-35 because it's a cool toy, in the same way a rich
         | businessman buys a Patel Phillipe. Not because he needs to tell
         | time, but because he wants to have something fun to play with
         | and look at when he has free time.
        
           | immmmmm wrote:
           | i don't think our biggest industry is watch nowadays.. but i
           | agree with your explanation!
        
           | TheGigaChad wrote:
           | You brain damaged clown.
        
       | efitz wrote:
       | We've had hardware interlocks forever to prevent this sort of
       | problem.
        
       | bellyfullofbac wrote:
       | The article links to a Sun tabloid news article as a source, and
       | the BBC article/a defense minister who said:
       | 
       | > Mr Wallace added that operational and training flights onboard
       | HMS Queen Elizabeth are continuing despite the incident.
       | 
       | and presumed the root cause was well-known.
       | 
       | Since they used the Sun, maybe take it with a grain silo of salt.
        
       | the-dude wrote:
       | No thread is complete without : why don't they train a AI/ML/RNN
       | network to screen jets before take off?
       | 
       | I mean, it could probably be done within a weekend, tops.
        
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       (page generated 2021-11-24 23:01 UTC)