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Boeing Starliner launch postponed a second time

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Posted By: Skinnydip, 6/2/2024 8:47:56 AM

NASA scrapped its Boeing Starliner launch Saturday, some three minutes before it was meant to begin. Saturday was the second attempt at the launch after the May 6 event was postponed just two hours before it was scheduled. The goal is to get the Starliner onto the International Space Station for a one-week stay. Then, it will return to Earth and certify its end-to-end capabilities. This time, NASA found one of its four computers operating the launch was lagging behind the others. As all four computers are meant to perform the same function — a delay in one signals a problem.

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Glad I'm not on a Boeing-designed spaceship.

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Reply 1 - Posted by: Kate318 6/2/2024 11:26:07 AM (No. 1729590)
Did the doors fall off?
2 people like this.

Reply 2 - Posted by: MickTurn 6/2/2024 11:37:22 AM (No. 1729605)
Boeing Boing off da wall and into the Trash Can. No way in Hades I will ever fly on a Boeing DEI built pile of crap. DEI....DIE Enduring Idiocy!
1 person likes this.

Reply 3 - Posted by: KTWO 6/2/2024 1:03:12 PM (No. 1729639)
Grouchy Sunday Remark: Does this article sense? Do they really have four computers all running the same software, with the same task? And when one deviates, they stop everything? The Program Manager says the team did a phenomenal job.
1 person likes this.

Reply 4 - Posted by: Luandir 6/2/2024 2:50:56 PM (No. 1729705)
The four-parallel-computers/one-veto system was used in the Shuttle program as well. Even with the STS's catastrophic problems, none of those were caused by this configuration.
3 people like this.

Reply 5 - Posted by: DVC 6/2/2024 3:05:31 PM (No. 1729717)
Better be certain that it's actually ready. Musk blew the first five or so Starliners to smithereens in failed launch tests. It happens. In the 1950s we had dozens and dozens of new aircraft designs fly. Many had a few prototypes crash, and some had MANY crashes, like the F-104. Still, they were built and contributed to our defense and our economy. Expecting absolute perfection right off the bat from something with a couple of million very complex parts is a bit unrealistic.
2 people like this.

Reply 6 - Posted by: KTWO 6/2/2024 3:56:30 PM (No. 1729759)
Thanx #4. I worked in and around aerospace for years but never heard of that 4/1 veto system. OTOH I wasn't able to type 20 words on a Sunday correctly either.
2 people like this.

Reply 7 - Posted by: Dodge Boy 6/2/2024 4:30:00 PM (No. 1729774)
I wonder what it is like to put your life in the hands of the lowest bidder.
3 people like this.

Reply 8 - Posted by: DVC 6/3/2024 12:27:23 PM (No. 1730381)
Re #3, in the chemical industry we used to have triple redundant systems with voting logic that if one system disagreed with the other two, the two went on and the 'man out' system was disregarded and flagged for maintenance. Quad redundancy and a shutdown before launch sounds like similar logic but more stringent in favor of safety. Once in the launch phase flying, you can't just "stop the presses!", you have to figure out what is the highest probability of true. I would assume that once in flight, one 'disagreeing' computer would be put out of the loop and the three 'agreeing' systems take over the task. More error forgiving than our old chem plant system from the 70s, when computers were VERY expensive and equally rudimentary.
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Posted by Skinnydip 6/2/2024 8:47:56 AM Post Reply
NASA scrapped its Boeing Starliner launch Saturday, some three minutes before it was meant to begin. Saturday was the second attempt at the launch after the May 6 event was postponed just two hours before it was scheduled. The goal is to get the Starliner onto the International Space Station for a one-week stay. Then, it will return to Earth and certify its end-to-end capabilities. This time, NASA found one of its four computers operating the launch was lagging behind the others. As all four computers are meant to perform the same function — a delay in one signals a problem.
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