Post AjPHCIHmM2hGgFtYOm by Crispius@mstdn.crispius.ca
(DIR) More posts by Crispius@mstdn.crispius.ca
(DIR) Post #AjCs2fRpoTYsPE0U9Q by spaceflight@spacey.space
2024-06-22T14:13:27Z
0 likes, 1 repeats
🔮 #Boeing #Starliner will ...
(DIR) Post #AjGtq9k4qUS38bXc5g by spaceflight@spacey.space
2024-06-22T17:23:43Z
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#Atmospheric entry 🔥 occurs at the #Kármán line at an altitude of 100 km. The main heating 🌡️during controlled entry takes place at altitudes of 65 to 35 kilometres, peaking at 58 kilometres. Notable #atmospheric entry accidents : https://en.wikipedia.org/wiki/Atmospheric_entry#Atmospheric_entry_accidentsPicture : https://commons.wikimedia.org/wiki/File:Skip_reentry_trajectory.svg#Reentry
(DIR) Post #AjKDGCc60yxIdiCsqG by spaceflight@spacey.space
2024-06-25T17:56:49Z
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Even with the propulsion system issues, #NASA has said #Starliner still would be capable of returning the astronauts 👨🚀👩🚀 to Earth if absolutely necessary - that is, if the capsule must serve as an escape pod from the #ISS in an emergency https://www.independent.co.uk/space/boeing-starliner-explained-rescue-latest-b2568671.html
(DIR) Post #AjKDGDoXYCVIMb2KsS by spaceflight@spacey.space
2024-06-26T15:03:16Z
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#NASA has maintained that the #astronauts 👨🚀👩🚀 are not stranded and can return at any time, a stance that has been met with scepticism. Critics argue that NASA's decision to launch despite known issues mirrors the oversight failures that led to the #Columbia disaster 💥. The agency's willingness to overlook significant risks, given #Boeing's recent history of #quality control failures , has sparked outrage. https://www.ibtimes.sg/nasa-endangered-lives-astronauts-knew-about-boeing-starliner-problems-launched-anyway-75067#Starliner #ISS
(DIR) Post #AjPHCHZT0nFeSpAAKW by spaceflight@spacey.space
2024-06-29T00:42:41Z
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#Boeing currently understand the issues with the vehicle well enough to deal with them and still have a safe return, but not well enough yet to fix them permanently 🤔 https://www.forbes.com/sites/ericmack/2024/06/28/nasa-boeing-say-starliner-and-astronauts-to-continue-extended-iss-stay/#NASA #ISS
(DIR) Post #AjPHCIHmM2hGgFtYOm by Crispius@mstdn.crispius.ca
2024-06-29T00:56:11Z
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@spaceflightIf I were Butch or Suni I don’t think I’d be super confident about stepping to that vehicle for reentry. #Starliner
(DIR) Post #AjPHCIkqbxwu8PUlhw by StarProphet@noauthority.social
2024-06-29T03:07:46Z
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@Crispius @spaceflight Butch and Suni are real heroes for boarding that Boeing spacecraft.I'm not kidding. 💥 💀
(DIR) Post #AjUFDwxbNuJn0Bv2UC by spaceflight@spacey.space
2024-06-29T13:17:38Z
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• 2019 clock 🕓 set to the wrong time, software error that could have destroyed 💥 the spacecraft• 2021 corroded propellant valves • 2022 two thrusters failed• 2023 flammable tape, parachute system weaker than designed• May 2024 valve replaced, helium leak, propulsion system “design vulnerability” https://www.nytimes.com/2024/06/05/science/boeing-starliner-spaceflight.html#Boeing #Starliner
(DIR) Post #AjUFDyA2v7rmj4kUWO by spaceflight@spacey.space
2024-07-01T05:53:55Z
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Engineers will conduct ground tests using a thruster identical to the ones on #Starliner. That will probably take a couple of weeks ⏳. Engineers will not be able to directly examine the troublesome thrusters on the spacecraft now in orbit because they are located on what is known as the service module. That part will be jettisoned during the flight home, burning up 🔥 in the atmosphere. https://www.nytimes.com/2024/06/28/science/boeing-starliner-nasa-astronauts.html
(DIR) Post #AjUObz2cCNzvzdnaIC by tsturm@famichiki.jp
2024-07-01T12:42:30Z
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@spaceflight @nyrath Why does everything with Boeing take weeks? They must have at least a few of those thrusters in some sort of accessible test setup. They should have dragged that into a test stand minutes after they learned about the thruster failure, not now, weeks later. WTF are they doing, writing JIRA tickets?
(DIR) Post #AjUTbwkLEKNceB3Lw8 by cstross@wandering.shop
2024-07-01T14:30:20Z
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@tsturm @spaceflight @nyrath I suspect they're terrified of a worst-case outcome, like: Starliner undocks to return with astronauts on board, helium leak gets worse and damages the rocket fuel pressurization system and the result is a RUD that takes out the ISS as collateral damage.They want to minimize risk to the ISS that the leaky Boeing bomb is currently docked to. It's stable now, but undocking/thruster ignition is a risky business. (Remember the SpaceX Dragon test stand explosion?)
(DIR) Post #AjUTbySgqvRty0oHhY by cstross@wandering.shop
2024-07-01T14:32:22Z
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@tsturm @spaceflight @nyrath Starliner is currently blocking a scarce resource, i.e. an ISS docking node. Merely giving up and sending the crew home on a Dragon won't resolve that problem.
(DIR) Post #AjZBMUKZllVEn0HRc8 by spaceflight@spacey.space
2024-07-03T17:05:49Z
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#Starliner is expected to fly 🚀 atop the #AtlasV. #ULA ceased production of the rocket in 📆 2024. The vehicles have been allocated to customers, including the six needed for the remaining Starliner flights.The Starliner faces an uncertain future after that. #DeltaIV is retired and no more are available, the #Falcon9 is owned by manned launch competitor #SpaceX, and the #Vulcan Centaur has not yet been human-rated, testing #Boeing would have to pay 💰 for 🤔 https://en.wikipedia.org/wiki/Boeing_Starliner#Launch_vehicle
(DIR) Post #AjZDl2IvJCbN0wLAhs by tsturm@famichiki.jp
2024-07-03T21:55:09Z
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@spaceflight And the current Starliner having trouble means that NASA will be hesitant to certify this as a success - and if they don't, Boeing will have to fly another certification flight on one of the remaining Atlas rockets on their own dime.At that point, there will be only five rockets left for paying Starliner flights. Boeing dug a really deep hole for themselves with this.
(DIR) Post #Ajf3aUR6Xc8aU9G8Aa by spaceflight@spacey.space
2024-07-06T16:22:09Z
0 likes, 2 repeats
Concerns about #Boeing’s quality control have only mushroomed. Its #Starliner spacecraft hasn’t been able to bring #NASA astronauts back down to Earth from the #ISS as the company struggles to troubleshoot leaks and other related malfunctions. “They’ve had the wake up call, they #ignored it” https://www.politico.com/news/2024/07/03/boeing-doj-lawsuit-decision-00166532
(DIR) Post #AkIBnH9cbv7mU4NEtk by spaceflight@spacey.space
2024-07-25T14:03:34Z
0 likes, 1 repeats
The public narrative—that the #astronauts are stranded 😱 on the #ISS—has not been flattering. #Boeing has taken the brunt of the bad reviews, because public perception of the aerospace company is already suffering from well-publicized issues with its #airplanes ✈️. But #NASA bears significant responsibility too: for its uneven supervision 🙈 of #Starliner’s development leading up to launch and its overly guarded #communications 🙊 to the public since https://www.theatlantic.com/science/archive/2024/07/boeing-nasa-starliner-astronauts-transparency/679223/
(DIR) Post #AknHfiKMJuPC4Jvnv6 by spaceflight@spacey.space
2024-07-25T17:14:28Z
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#NASA’s commercial crew program manager Steve Stich acknowledged that #backup options are under review. This was the #Boeing’s first test flight with a crew aboard. #SpaceX has been ferrying astronauts 👩🚀 since 📆 2020 https://apnews.com/article/boeing-astronauts-nasa-capsule-starliner-479f3bb94f142a7dcd9ce2f82fcf40c2#Starliner #CrewDragon
(DIR) Post #AknHfjmktoiKagDzou by spaceflight@spacey.space
2024-08-07T15:50:48Z
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#NASA said on Tuesday it pushed a routine #SpaceX launch of astronauts 👨🚀 to the International #SpaceStation back a month ⏳ to spend more time analyzing issues with #Boeing's #Starliner spacecraft, which remains docked at the station 🥱🙄 https://www.reuters.com/business/aerospace-defense/boeings-starliner-problems-delay-next-nasa-astronaut-mission-2024-08-06/
(DIR) Post #AknHfkV4F49wo6xNtA by spaceflight@spacey.space
2024-08-07T16:13:49Z
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#Starliner cannot perform an automated undocking from the #SpaceStation and entry into Earth’s atmosphere. This seems absurd. #Boeing did not respond to a media query about why this capability was removed ❌ for the crew flight test. https://arstechnica.com/space/2024/08/nasa-likely-to-significantly-delay-the-launch-of-crew-9-due-to-starliner-issues
(DIR) Post #AknHfka1wc853VHLcm by spaceflight@spacey.space
2024-07-26T14:34:14Z
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Heat 🌡️ building up inside the thrusters may be causing Teflon seals to bulge, restricting the flow of propellant. The helium leaks may be a result of seals that have become degraded because of exposure to propellant vapor. The revelations prompted plans for some additional testing this weekend. #NASA does have contingency options if #Starliner is not approved 👎 to bring the #astronauts home https://edition.cnn.com/2024/07/25/science/boeing-starliner-issues-root-cause-testing-nasa/index.html
(DIR) Post #AknHflysjhbPOrui00 by spaceflight@spacey.space
2024-08-08T23:11:43Z
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#Stuckliner is a nice new hashtag 🙄
(DIR) Post #AlKgw5EznzwQpz0EFs by StarProphet@noauthority.social
2024-08-25T17:46:51Z
1 likes, 1 repeats
@spaceflight I voted "Return empty (switch to Elon's Crew Dragon)."
(DIR) Post #AlKhFe3EbcHEIlpSpU by spaceflight@spacey.space
2024-08-25T16:15:32Z
1 likes, 2 repeats
Who would have guessed it 2 months ago ? About 43%...👆 "#Starliner will undock and return to Earth in early September without anyone aboard. The Starliner episode is another black eye for #Boeing, whose reputation has been badly damaged in recent years" https://www.nytimes.com/2024/08/24/science/nasa-boeing-starliner-astronauts.html
(DIR) Post #AlKiWGD0bW8nEVt5kG by acsawdey@fosstodon.org
2024-07-01T15:22:56Z
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@cstross @tsturm @spaceflight @nyrath While I don't disagree, they have activated and tested some of Starliner's troublesome thrusters since it docked at ISS. If RUD was the concern I don't think they would have done that. I think the concern is more likely that something goes wrong after undocking and it can't do the deorbit burn or botches it resulting in loss of crew. ISS visiting vehicle schedule is tight, how much longer before they send Starliner home empty?
(DIR) Post #AlKiWH71FGwa2E5p32 by Aaron_DeVries@mastodon.social
2024-07-01T16:35:28Z
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@acsawdey @cstross @tsturm @spaceflight @nyrath there's no reason to send it home empty. The capsule is in perfect health, the main engines used for deorbit are in perfect health. The only trouble was 5 of the 28 RCS thrusters which are mostly back online and not mission critical.I hate Boeing too but I don't understand why everyone thinks it's unsafe when littirally everyone at NASA is saying it's fine and they just want to test the trouble thrusters before they are discarded.
(DIR) Post #AlKiWHwm8qLOckJ9ii by StarProphet@noauthority.social
2024-08-25T18:04:35Z
1 likes, 1 repeats
@Aaron_DeVries "The capsule is in perfect health, the main engines used for deorbit are in perfect health. The only trouble was 5 of the 28 RCS thrusters which are mostly back online and not mission critical.""I hate Boeing too but I don't understand why everyone thinks it's unsafe when littirally everyone at NASA is saying it's fine and they just want to test the trouble thrusters before they are discarded."This didn't age well. 💥 @acsawdey @cstross @tsturm @spaceflight @nyrath
(DIR) Post #AlL4RaMESi21GcNTqC by nyrath@spacey.space
2024-08-25T22:10:14Z
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@StarProphet @Aaron_DeVries @acsawdey @cstross @tsturm @spaceflight It aged like fine milk, if the truth must be known
(DIR) Post #AlL5co8jeyp99Syo76 by acsawdey@fosstodon.org
2024-08-25T22:23:28Z
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@nyrath @StarProphet@noauthority.social @Aaron_DeVries @cstross @tsturm @spaceflight Not only that but apparently NASA also may have lied when asked if that “contingency study” was about this.
(DIR) Post #AljC0HnwnPOpKmsCDQ by spaceflight@spacey.space
2024-08-30T19:56:24Z
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Following #NASA’s decision on Aug. 24 to return the #Starliner spacecraft uncrewed, #Boeing will proceed with undocking on 📆 Friday, Sept. 6, from the #ISS, pending weather ⛅ and operational readiness. https://blogs.nasa.gov/commercialcrew/2024/08/29/nasa-boeing-teams-go-for-starliner-uncrewed-return/
(DIR) Post #AljC0JaCBVaUqiSF3g by spaceflight@spacey.space
2024-09-06T00:03:11Z
0 likes, 1 repeats
#Starliner's uncrewed crew flight test return https://www.youtube.com/watch?v=_79y0yZs0dc
(DIR) Post #AljSgDMnHj9d01Bfl2 by spaceflight@spacey.space
2024-09-06T15:36:10Z
0 likes, 1 repeats
“We’ve #learned a lot on this test flight, but we’ll continue to #learn more 😱, I’m sure, through the undock and the de-orbit phase.” #NASA has scheduled the #Boeing spacecraft to reach Earth on 📆 September 7, 2024 https://www.aerotime.aero/articles/nasa-boeing-starliner-return-earth-uncrewed#Starliner #learning