06 Jan 2026, 17:34 [ UTC - 5; DST ]
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Post subject: Re: Boeing Starliner: 80 Problems Posted: 26 Aug 2024, 16:16 |
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Joined: 04/26/13 Posts: 21985 Post Likes: +22690 Location: Columbus , IN (KBAK)
Aircraft: 1968 Baron D55
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Username Protected wrote: Elon should say "Sorry, rescue flights have a 200% surcharge" for all the screwing the government has given Elon, but it would be us taxpayers picking up the tab, which should go to Boeing. With the free advertising and no shame smug card I’d say it’s a good value for SpaceX as-is, but what really would ice the cake is if NASA contracted for a dedicated flight so they wouldn’t have to break up Crew 9 and scramble the schedule after them. It’s only another $200K.
_________________ My last name rhymes with 'geese'.
Last edited on 27 Aug 2024, 13:59, edited 1 time in total.
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Post subject: Re: Boeing Starliner: 80 Problems Posted: 26 Aug 2024, 16:17 |
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Joined: 04/26/13 Posts: 21985 Post Likes: +22690 Location: Columbus , IN (KBAK)
Aircraft: 1968 Baron D55
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Username Protected wrote: Elon should say "Sorry, rescue flights have a 200% surcharge" for all the screwing the government has given Elon, but it would be us taxpayers picking up the tab, which should go to Boeing. With the free advertising and no shame smug card I’d say it’s a good value for SpaceX as-is, but what really would ice the cake is if NASA contracted for a dedicated flight so they wouldn’t have to break up Crew 9 and scramble the schedule after them. It’s only another $225MM.
_________________ My last name rhymes with 'geese'.
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Post subject: Re: Boeing Starliner: 80 Problems Posted: 27 Aug 2024, 13:20 |
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Joined: 11/03/08 Posts: 17034 Post Likes: +28995 Location: Peachtree City GA / Stoke-On-Trent UK
Aircraft: A33
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is it ok to say "stuck" yet ?
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Post subject: Re: Boeing Starliner: 80 Problems Posted: 27 Aug 2024, 14:13 |
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Joined: 02/23/17 Posts: 843 Post Likes: +767
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What do you think will happen first, the two marooned Boeing astronauts get home or G100UL is for sale at an airport somewhere?
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Post subject: Re: Boeing Starliner: 80 Problems Posted: 28 Aug 2024, 10:53 |
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Joined: 01/06/08 Posts: 5408 Post Likes: +3111
Aircraft: B55 P2
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At least the astronauts will get home in 2030 when they de-orbit the station Username Protected wrote: What do you think will happen first, the two marooned Boeing astronauts get home or G100UL is for sale at an airport somewhere?
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Post subject: Re: Boeing Starliner: 80 Problems Posted: 29 Aug 2024, 09:36 |
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Joined: 01/08/17 Posts: 260 Post Likes: +326
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Found an article which stated they found the problem during ground testing, some type of teflon seal is heating up and leaking. My thoughts are they have been building rockets for 60 years, this sounds like the type of engineering problem that should have long been solved.
Boeing has become such a complete incompetent mess....luckily they are moving HQ to Washington DC to solve their problems......
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Post subject: Re: Boeing Starliner: 80 Problems Posted: 29 Aug 2024, 09:43 |
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Joined: 04/26/13 Posts: 21985 Post Likes: +22690 Location: Columbus , IN (KBAK)
Aircraft: 1968 Baron D55
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As I understand it, the RCS thrusters are having the problem. They are grouped in enclosures they refer to as "dog houses". The design of the individual thrusters has been around for a long time and are quite reliable. Apparently the problem is that they are being used more than they can handle (software issue?) and so the enclosure is heating up a lot more than expected. That causes the teflon seals to swell, which causes the thrusters to respond less quickly. The software detects this, marks it as a failure, and disables that thruster. Unfortunately the overheat condition affects many thrusters and so they end up with a cascade failure. If you just let them cool down, they start working again. That's why after five "failed" on the flight up to the station, they were able to get all but one of them back online.
This had never happened before, presumably because testing didn't put them through the intensive cycles and heating that they experienced in flight. The thrusters are manufactured by Aerojet Rocketdyne, not Boeing, so to some degree Boeing was relying on the expertise of their subcontractor to deliver a product to spec. That spec. was either inadequate or Aerojet Rocketdyne didn't know they had a problem until it happened. My suspicion is that Boeing just specified the standard part that they were used to and unintentionally put it into an environment that it had never experienced before.
_________________ My last name rhymes with 'geese'.
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Post subject: Re: Boeing Starliner: 80 Problems Posted: 29 Aug 2024, 11:26 |
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Joined: 11/03/08 Posts: 17034 Post Likes: +28995 Location: Peachtree City GA / Stoke-On-Trent UK
Aircraft: A33
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Username Protected wrote: The thrusters are manufactured by Aerojet Rocketdyne, not Boeing, so to some degree Boeing was relying on the expertise of their subcontractor to deliver a product to spec. That spec. was either inadequate or Aerojet Rocketdyne didn't know they had a problem until it happened. My suspicion is that Boeing just specified the standard part that they were used to and unintentionally put it into an environment that it had never experienced before. happens all the time. I'm dealing with several issues at my job right now that are similar to this. Applying a standard, proven sub-system in a slightly different manner and not accounting for all the effects. Various companies call it different things, the job of making all the bits play nice together: systems engineering, interface management, application engineering, platform engineering, etc. But whatever they call it, no one ever budgets enough time or money for it.
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Post subject: Re: Boeing Starliner: 80 Problems Posted: 29 Aug 2024, 14:37 |
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Joined: 03/28/17 Posts: 9112 Post Likes: +11595 Location: N. California
Aircraft: C-182
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Username Protected wrote: As I understand it, the RCS thrusters are having the problem. They are grouped in enclosures they refer to as "dog houses". The design of the individual thrusters has been around for a long time and are quite reliable. Apparently the problem is that they are being used more than they can handle (software issue?) and so the enclosure is heating up a lot more than expected. That causes the teflon seals to swell, which causes the thrusters to respond less quickly. The software detects this, marks it as a failure, and disables that thruster. Unfortunately the overheat condition affects many thrusters and so they end up with a cascade failure. If you just let them cool down, they start working again. That's why after five "failed" on the flight up to the station, they were able to get all but one of them back online.
This had never happened before, presumably because testing didn't put them through the intensive cycles and heating that they experienced in flight. The thrusters are manufactured by Aerojet Rocketdyne, not Boeing, so to some degree Boeing was relying on the expertise of their subcontractor to deliver a product to spec. That spec. was either inadequate or Aerojet Rocketdyne didn't know they had a problem until it happened. My suspicion is that Boeing just specified the standard part that they were used to and unintentionally put it into an environment that it had never experienced before. Like a car manufacturer that takes the hit for the failing of vendor parts on the car. GM had a big problem with Delphi failures resulting in law suits; maybe where this is going. GM got $2.7 billion from Delphi. The way I see it, the stranded crew members are away from base, on duty, and should get overtime pay plus per diem. 
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Post subject: Re: Boeing Starliner: 80 Problems Posted: 30 Aug 2024, 13:06 |
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Joined: 12/03/17 Posts: 8904 Post Likes: +10689 Location: Brevard, NC
Aircraft: Lancair LNC2 - SOLD
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Boeing’s Uncrewed Starliner Could Return by Late Next Week, NASA SaysQuote: NASA will proceed with the undocking of the uncrewed Boeing Starliner capsule not before Sept. 6, the space agency said on Thursday after concluding a review... ...The journey back to Earth for the Starliner is expected to take approximately six hours from undocking to landing at White Sands Space Harbor in New Mexico, NASA said in a blog post. Ground teams will remotely guide the spacecraft through necessary manoeuvres for a safe undocking, re-entry, and parachute-assisted landing in southwestern United States.
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