Post ATmsmBMCkHCD6hZeka by ramsey@phpc.social
(DIR) More posts by ramsey@phpc.social
(DIR) Post #ATmr6zif0fZxBasFUG by stux@mstdn.social
2023-03-19T22:14:47Z
2 likes, 0 repeats
In many SciFi movies you see spaceships accelerate forward to a destination and magically brake somehow :akko_giggle: But it would be more like accelerating to about half way, turn around the ship and decelerate the rest of the way otherwise you'll just fly past your target :blobcatspace:
(DIR) Post #ATmrCVlJIquQ0qkC6C by mochsner@mstdn.social
2023-03-19T22:15:53Z
1 likes, 0 repeats
@stux the expanse gets it right (at least in the books)
(DIR) Post #ATmrFajTHPvWISLvFY by stux@mstdn.social
2023-03-19T22:16:18Z
0 likes, 0 repeats
@mochsner Yup! Also in the series :ed_grin:
(DIR) Post #ATmrFuuqEquCtVpHkW by Vor@mamot.fr
2023-03-19T22:16:16Z
1 likes, 0 repeats
@stux Not in #theExpanse
(DIR) Post #ATmrGioshHqZfVQEOu by stux@mstdn.social
2023-03-19T22:16:38Z
0 likes, 0 repeats
@Vor Also :akko_giggle:
(DIR) Post #ATmrJmRNgtwZldt99M by stux@mstdn.social
2023-03-19T22:17:09Z
0 likes, 0 repeats
@Vor Oh orry! Youre right!I meant also on another quest 😊
(DIR) Post #ATmrNguUCB17lzMo76 by wuffel@social.tchncs.de
2023-03-19T22:17:53Z
0 likes, 0 repeats
@stux Yepp.Tell them filmmakers.
(DIR) Post #ATmrbo5kI6vw6IMee0 by peterdrake@qoto.org
2023-03-19T22:20:27Z
0 likes, 1 repeats
@stux @nyrath has the mother of all websites on this sort of thing:http://projectrho.com/public_html/rocket/
(DIR) Post #ATmrrZirTzjsAXBBku by smallsees@social.dropbear.xyz
2023-03-19T22:22:54Z
0 likes, 0 repeats
@mochsner @stux generally that is the case, they get it right.I was reading a sci-fi book recently where they did the turn around thing but there was some issue about it so they missed their destination even though the difference started off so small.
(DIR) Post #ATms1hGYI8EySalRom by yuki2501@hackers.town
2023-03-19T22:25:03Z
0 likes, 0 repeats
@stux Mass Effect does it right. There's a scene where you talk to some Salarian and he mentions an ignorant guy who said "Wait a minute, we're only halfway, why are you turning around?"
(DIR) Post #ATmsmBMCkHCD6hZeka by ramsey@phpc.social
2023-03-19T22:33:25Z
0 likes, 0 repeats
@stux If you don’t use acceleration and instead warp space, could stop instantly?
(DIR) Post #ATmtSe6IGhx2PpNd0C by mattgriffin@masto.ai
2023-03-19T22:41:00Z
0 likes, 0 repeats
@stuxBattlestar Galactica did interesting things with momentum and space combat.
(DIR) Post #ATmyNeXPiLdU5xVIdk by JPZ@mastodon.social
2023-03-19T23:36:20Z
0 likes, 0 repeats
@stux …well, maybe with the technology we’re aware of, sure.
(DIR) Post #ATn1NxkwYqrPYtfhuS by N8@mstdn.social
2023-03-20T00:09:59Z
1 likes, 0 repeats
@stux Why would they have to behave in ways that we understand? "Any sufficiently advanced technology is indistinguishable from magic." - Arthur C. Clarke
(DIR) Post #ATn1Vczvck5FUvKsiG by stux@mstdn.social
2023-03-20T00:11:19Z
1 likes, 0 repeats
@N8 To give people a better understanding of how space works :ablobwink: Like with 'hacking'Movies ruines that for real, it would be good if people more knew how it went, saved a lot of nerd a lot of time :blobcatgiggle:
(DIR) Post #ATn1leVplCd0pQtso4 by N8@mstdn.social
2023-03-20T00:13:50Z
0 likes, 0 repeats
@stux I would argue that people generally don't read sci-fi (or go to sci-fi films) for a better understanding of how space works.
(DIR) Post #ATn1tde6rkMuSRZyvg by stux@mstdn.social
2023-03-20T00:15:41Z
0 likes, 0 repeats
@N8 True but i can't hurt can it? :blobcatgiggle:
(DIR) Post #ATn26bHYxu3WtLDKPQ by N8@mstdn.social
2023-03-20T00:18:04Z
0 likes, 0 repeats
@stux True space travel is long and boring. It wouldn't be very sci-fi(iction) if they stick to the rules. :blobcatwink:
(DIR) Post #ATn2BJst4tPgNevG7s by stux@mstdn.social
2023-03-20T00:18:54Z
1 likes, 0 repeats
@N8 Haha i don't say they'll have to show the whole journey :blobcatgiggle: Like in the Expanse, the details are amazing but it's still super amusing
(DIR) Post #ATn2MDeOaxUMETLEOG by N8@mstdn.social
2023-03-20T00:20:55Z
0 likes, 0 repeats
@stux Artistic convenience. Not everyone is as good as The Expanse. Hey man just answering your question! :ablobcatwink:
(DIR) Post #ATn2RayRJ6Nu14HRMe by stux@mstdn.social
2023-03-20T00:21:50Z
0 likes, 0 repeats
@N8 Thats for sure and also multi 'levels' of scifi perhaps :blobcatspace:Ohh yes, i love it! :blobcathighfive:
(DIR) Post #ATnQwvnqJSJ0UenaRk by sergeant@qoto.org
2023-03-20T04:56:26Z
0 likes, 0 repeats
@stux That's why the 'Fi' in SciFi stands for 'Fiction'.
(DIR) Post #ATnXFT3I20bQYFFJdA by elcrest@mastodon.social
2023-03-20T06:07:01Z
0 likes, 0 repeats
@stux The Expanse on Prime does that very well. (Spoiler: they turn halfway 😉)
(DIR) Post #ATncmFcXUQMiDnBY5g by incandescental@mastodon.world
2023-03-20T07:08:53Z
0 likes, 0 repeats
@stux this is where the Borg have the right idea. The Enterprise would look stoopid heroically arriving arse first, but with a cube you can't tell.
(DIR) Post #ATo0GySPeO2uug4Fwu by nyrath@spacey.space
2023-03-20T11:32:12Z
2 likes, 1 repeats
@stux Yes, the technical term for this is a "Brachistochrone". The turn around at midpoint is called a "skew flip. In the scifi show "The Expanse" they call the maneuver a "flip and burn"http://www.projectrho.com/public_html/rocket/torchships.php#brachistochrone#AtomicRockets
(DIR) Post #ATo0ve848QIZjtwcNM by nyrath@spacey.space
2023-03-20T11:39:35Z
0 likes, 0 repeats
@stux The scifi misconception that both you and I dislike is what I call "There Is No Friction In Space"http://www.projectrho.com/public_html/rocket/misconceptions.php#noFriction
(DIR) Post #ATo14IUxvV69G8mTU8 by stux@mstdn.social
2023-03-20T11:41:07Z
1 likes, 0 repeats
@nyrath Aaah that's it! :akko_giggle: Another thing for me is 'gravity'! For example in Star Trek they have magical gravity on the ships etc but in the Expanse it's down wonderfully!
(DIR) Post #ATo1LWT7EsCnVg84sS by paul@notnull.click
2023-03-20T11:44:14.603552Z
1 likes, 0 repeats
@stux @nyrath It always makes me laugh how on Star Trek they sometimes "loose all power"... but yet they're still stood on the floor.Yep, pretty sure that gravity generator is using one hell of a lot of power... might wanna switch that off if you need life support eh? :rofl:
(DIR) Post #ATo1N08kPGZrp9J6u0 by Alisca@mastodon.social
2023-03-20T11:44:31Z
0 likes, 0 repeats
@stux ex-girlfriend, watching the Expanse:"Why are they flying backwards?"
(DIR) Post #ATo1UwFqjib25ePjHM by stux@mstdn.social
2023-03-20T11:45:57Z
1 likes, 0 repeats
@paul @nyrath I only could watch the 'newest' and with much trouble :catblush: The further away it's from science the harder it's too watch :blobcatgiggle: And okay, things like aliens and alien ships are super scifi but it can be in the 'realisitic' branch instead of mega scifi
(DIR) Post #ATo1Ysk5jjleM6RKIC by paul@notnull.click
2023-03-20T11:46:01.774925Z
0 likes, 0 repeats
@stux @nyrath I've also had a desire to see Expanse like (pretty realistic) gravity in Star Trek... I think that would be cool
(DIR) Post #ATo1jeqDlFaIQYReaW by stux@mstdn.social
2023-03-20T11:48:35Z
1 likes, 0 repeats
@paul @nyrath That would be cool indeed! What do you think about the FTL 'Faster than light' concept? 😇
(DIR) Post #ATo1nW3cMTJILJYE9Q by nyrath@spacey.space
2023-03-20T11:49:17Z
0 likes, 0 repeats
@stux Oh, I too hate that onehttp://www.projectrho.com/public_html/rocket/advdesign.php#down
(DIR) Post #ATo1u70vs1BOhQRMFU by blobfrog@blob.cat
2023-03-20T11:50:36.090533Z
0 likes, 0 repeats
@nyrathplay Helium Rain if you want to have fun with spaceflight mechanics. 😊 It's available on the GOG store, good if you can get it at a discount.@stux
(DIR) Post #ATo25A0F68e79eNym8 by paul@notnull.click
2023-03-20T11:52:19.295476Z
0 likes, 0 repeats
@stux @nyrath I'm sort of OK with their FTL concept - warpIt's sort of based on the alcubierre drive which, although exotic, has some scientific feasibilityhttps://en.wikipedia.org/wiki/Alcubierre_driveDiscovery era "Spore drive" though? No thanks, chuck that in the bin.I think the newer STs are trying to be too "real-life" which makes scientific inaccuracies harder to swallow. Earlier ones were clearly more fictional - so I can give them a bit of artistic license because of that
(DIR) Post #ATo25sniXYMi5ps704 by nyrath@spacey.space
2023-03-20T11:52:14Z
1 likes, 0 repeats
@paul @stux Artist Mark Glanzer had this concept
(DIR) Post #ATo269ndL7OooUxmjI by paul@notnull.click
2023-03-20T11:52:45.866706Z
0 likes, 0 repeats
@nyrath @stux Incredible! Love it!
(DIR) Post #ATo2CdRC3iJKTJYXZ2 by nyrath@spacey.space
2023-03-20T11:53:51Z
2 likes, 0 repeats
@stux @paul "Causality, Relativity, FTL travel: choose any two."http://www.projectrho.com/public_html/rocket/fasterlight.php#causality
(DIR) Post #ATo2FGxm4iDxdZ3MTg by paul@notnull.click
2023-03-20T11:54:22.755772Z
0 likes, 0 repeats
@stux @nyrath It should also be said I am a BIG Hitchhikers Guide to the Galaxy fan - thus the improbability drive and Bistromathic drive are perfectly fine too :rofl:
(DIR) Post #ATo2PFSeVw81sIFkPI by stux@mstdn.social
2023-03-20T11:56:07Z
0 likes, 0 repeats
@nyrath @paul Ohhh awesome! 🤩 ⚡ I have a feeling some movies/series even take those 2 and mix them somehow :flan_laugh: quite a mess
(DIR) Post #ATo2VBAHOu5iHsUGrQ by stux@mstdn.social
2023-03-20T11:57:11Z
1 likes, 0 repeats
@paul @nyrath maybe my next game should be a space related one :catblush: :blobcatgamer: got the math now :ed_grin:
(DIR) Post #ATo2YwFIoLYNAvd4XQ by paul@notnull.click
2023-03-20T11:57:48.141717Z
0 likes, 0 repeats
@stux @nyrath TAKE MY MONEY!!! 💰
(DIR) Post #ATo2uvVkDvZnGcnwtk by stux@mstdn.social
2023-03-20T12:01:49Z
1 likes, 0 repeats
@paul @nyrath Haha I gotta learn a lot more first :ed_grin: Creating planets in Unreal is quite easy though! :amaze: But it'll all be free and even open source so everyone can have fun with it :cat_hug_triangle: only donations
(DIR) Post #ATo5XyxFYPAX9KQ9ke by ByMatthewPorter@mastodon.social
2023-03-20T12:30:18Z
1 likes, 0 repeats
@blobfrog The old board game TRIPLANETARY had a neat mechanic for this. Every ship represented by three tokens: where is was, where it is, and where it will be. Apply acceleration to change the future location, or else it continues the same line as past-to-present, for the same distance.
(DIR) Post #ATo5bO5iYMJZyh0OkC by blobfrog@blob.cat
2023-03-20T12:32:03.162591Z
0 likes, 0 repeats
@ByMatthewPorter Sounds neat!
(DIR) Post #ATo64vVDPTeu0017C4 by acsawdey@fosstodon.org
2023-03-20T12:36:13Z
1 likes, 0 repeats
@paul @stux @nyrath It must have an independent power supply like they had to concoct for the holodeck 🙄I think we’ve had zero g on trek but maybe only in a movie? Must be a function of the effects budget.
(DIR) Post #ATo6HuGVJzCxvUKEWe by paul@notnull.click
2023-03-20T12:39:41.131908Z
0 likes, 0 repeats
@acsawdey @stux @nyrath quite probably, but I'd have through gravity wouldn't be such a crucial thing... probably put life support on an independent power supply right? :rofl: There's definitely been zero g on trek somewhere, I think you're right with a movie though
(DIR) Post #ATo6kGof4T6TyVpKq0 by sohkamyung@mstdn.io
2023-03-20T12:44:39Z
0 likes, 0 repeats
@stux In "The Martian", the Hermes takes ages to accelerate back to Mars, but manages to decelerate quickly with some improvisation.
(DIR) Post #AToTh1PUBxOkGrTHqy by nyrath@spacey.space
2023-03-20T16:12:57Z
1 likes, 0 repeats
@acsawdey @paul @stux There was one zero-g scene in ST:ENT. Captain Archer was naked taking a shower when the gravity in the shower stall cut out.
(DIR) Post #ATodCi3eZqqB6bRbGK by Landa@graz.social
2023-03-20T18:48:26Z
0 likes, 0 repeats
@stux well, if your hull is from General Products and you paid for a decent stasis generator, you have the option of lithobreaking at the destination, thus greatly reducing your travel time 😂
(DIR) Post #ATsKSPehdyDAATO6XQ by photos_floues@mastodon.art
2023-03-22T13:37:13Z
0 likes, 0 repeats
@stux @nyrath Not really: in the scene where combat maneuvers dislodge a tool from a rack, the ship seems to perform sustained linear accelerations in all directions. That is nonsense, you would feel the ship turning on herself, then be pressed to the floor at 9gs, turn again, but the acceleration would always push you on the floor, never sideways.(still that scene gives a new meaning to the expression "battle drill")
(DIR) Post #ATtq0CIV6fkqJzYJcW by cbehopkins@mastodon.social
2023-03-22T22:53:03Z
0 likes, 0 repeats
@paul @stux @nyrath why would artificial gravity consume power when natural gravity doesn't? It's not doing work anymore than a planet is.
(DIR) Post #ATtq0CoPC3H7uwTnLk by paul@notnull.click
2023-03-23T07:05:26.686532Z
0 likes, 0 repeats
@cbehopkins @stux @nyrath the answer is in your question... "artificial"
(DIR) Post #ATu25GblhoBsaZkTQ0 by cbehopkins@mastodon.social
2023-03-23T08:46:47Z
1 likes, 0 repeats
@paul @stux @nyrath flippantly: artificial grass doesn't consume power so it's not being artificial that's the issue;-)Seriously though, if the system is not doing work, why would we expect the system to consume significant power. Any power consumed would be system losses. Without a clue as to the physics of how it works though it's hard to estimate the magnitude of those.
(DIR) Post #ATu25I97zGT9MKMd3Q by cbehopkins@mastodon.social
2023-03-23T08:50:54Z
1 likes, 0 repeats
@paul @stux @nyrath taking the ST UDC example someone have that bothered me. Activating AG should consume potential energy from the subjects "falling into the gravity well" for want of a better phrase.When the AG power fails one would have to expend power to return that potential energy back to the subjects.So you end up with the situation where an AG system needs a power reserve in the event of failure to do just that.
(DIR) Post #ATu2iKDOEHnf4KyCg4 by paul@notnull.click
2023-03-23T09:27:53.137647Z
0 likes, 0 repeats
@cbehopkins @stux @nyrath yeah, that sounds right... power required to generate the mass once, but then you're right, it's there regardless so no power draw - or at least minimal to "top up" I guessOf course, that does assume each starship is also "holding" the mass of a planet (or, indeed, small black hole) along a stretch of the star ship which may then cause additional problems such as the stern of the ship being "bent" towards the center as more mass is to the bow from it's reference, the reverse is true for the bow to the stern, port and starboard etc. It's a fun thought experiment at least.... :-DFrom a different perspective (using The Expanse as an example), gravity is simply consistent acceration - so without having mass a starship would need to generate a consistent force "upwards" to keep people stood on the floor.... hence power use.Good exercise for the brain... :rofl:
(DIR) Post #ATuYb5KmM37jQI1A9I by nyrath@spacey.space
2023-03-23T15:16:50Z
1 likes, 0 repeats
@cbehopkins @paul @stux Agreed. A physicist named Luke Campbell gave me the equation for the energy requirement for an artificial gravity machine lifting a mass of X a distance of Y. And he noted that once the mass is lifted, the machine need not expend any further energy to have the mass hover.http://www.projectrho.com/public_html/rocket/antigravity.php#parahoverAnd yes, the energy is negative if the mass is lowered, the machine will gain power. Arthur C. Clarke noted this in "The Cruel Sky"
(DIR) Post #ATul5o89ZAOOUgWoca by AMS@infosec.exchange
2023-03-23T17:44:13Z
1 likes, 0 repeats
@nyrath @cbehopkins @paul @stux I always liked the handwave that the artificial gravity is part of the inertial dampening which is independently powered with reserve power because without it you turn the people into goo. Also why ST ships shake the insides on weapon strikes. The dampeners can't predict weapon impulses.
(DIR) Post #ATulPVub0pdfmVaF96 by paul@notnull.click
2023-03-23T17:48:42.430093Z
0 likes, 0 repeats
@AMS @nyrath @cbehopkins @stux I like that too - but inertial dampeners also seem to fail a lot so how do they still have gravity then? :rofl:Then also, depending on how you feel about the newer movies... didn't sulu have to disengage the inertial dampeners to go to warp? I am, obviously, having a joke at Hollywoods expense here... I love star trek, they can do whatever they want so long as it doesn't include mushrooms and huge space tardigrades
(DIR) Post #ATunllTs0YJ8LYowRU by AMS@infosec.exchange
2023-03-23T18:10:07Z
1 likes, 0 repeats
@paul @cbehopkins @stux @nyrath There's a whole lot of fail between "power input lost", "open-loop mode, no sudden manuvers please", and "chunky salsa".
(DIR) Post #ATupbz86betlgt6YkK by alice@marrow.haus
2023-03-23T18:33:50Z
1 likes, 0 repeats
@paulThey are, in fact, separate subsystems. Redundancy in critical systems ensures that one or the other may fail, but you're only *really* in trouble if both do.There's also a difference in locality: inertial dampeners are a broad, ship-wide system protecting equipment ship-wide, not just people. Artificial gravity is frequently referred to as "gravity plating", something built into the deck below your feet; far more localized.(Mag boots on outer hull.)@AMS @cbehopkins @stux @nyrath
(DIR) Post #ATupdij0ZOzjOKC2ca by cinebox@hackers.town
2023-03-23T18:35:34Z
1 likes, 0 repeats
@nyrath @cbehopkins@mastodon.social @paul @stux @AMS software bug. The accelerometer driver crashes and it falls back to 1G mode.
(DIR) Post #ATuphIQwGMRv0ZRkHI by cinebox@hackers.town
2023-03-23T18:33:58Z
1 likes, 0 repeats
@nyrath @AMS @cbehopkins@mastodon.social @paul @stux Yes! I keep saying that it makes no sense for these to be different systems!Of course the official lore is some nonsense about “grav plates” in the floor that get “charged” which. No i don’t like that. I don’t care how many Gorn you can defeat by overloading it.
(DIR) Post #ATupuSSwH4tzt4ergW by cinebox@hackers.town
2023-03-23T18:38:27Z
1 likes, 0 repeats
@paul @nyrath @stux @cbehopkins@mastodon.social imagining a Star Trek plot where the reactor fails and they have to go around knocking things off tall shelves to recharge the ship. Im sure Spot would love that activity.
(DIR) Post #ATuuSU5T9U0IZwA1lg by squeakyears@meow.social
2023-03-23T19:25:02Z
1 likes, 0 repeats
@cinebox@paul @nyrath @stux One scene that I still want to write - perhaps as a short story with some interesting characters, so it's not *astonishingly* dull - is the process of starting a spacecraft from totally cold to fully operational.Yes, this idea was inspired by studying different engine starting technologies. Turns out most practical engines need more power to turn over than a human can supply, so it's starter motors all the way down. Or, at least, several steps down.
(DIR) Post #ATuuTqjQRhsP6BV7i4 by paul@notnull.click
2023-03-23T19:30:23.132587Z
0 likes, 0 repeats
@squeakyears @cinebox @nyrath @stux Well, when you write it I'd be happy to read it :blobcatspace:
(DIR) Post #ATuuVhI6W7LwOkbQae by squeakyears@meow.social
2023-03-23T19:29:29Z
1 likes, 0 repeats
@AMS@paul @cbehopkins @stux @nyrath The good news is, that leaves lots of space for sci-fi writers to play in - so to speak. One moment from Firefly that sticks in my mind is ste scene where passengers who aren't buckled in are tossed around somewhat by the gravity generator and a planet's natural gravity "working against each other." Such a little thing with fun implications. Are spacecraft with better gravity controls more maneuverable in atmosphere in your universe? 🤔
(DIR) Post #ATuwsSg9D83HeEpbpA by darrelplant@mstdn.social
2023-03-23T19:31:14Z
1 likes, 0 repeats
@cinebox @nyrath @paul @stux @AMS There's so much love in ST for the warp drive grease monkeys but that lone artificial gravity tech out there is doing the Lord's work.