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Starliner faced “catastrophic” failure before software bug found

arstechnica.com

31–40 of 64 posts

Re: Starliner faced “catastrophic” failure before software bug found

#31
post #18
post #7

So we know there were catastrophic bugs in the 737 Max, they've found additional bugs that haven't been catastrophic yet and now we hear that the Starliner also has software bugs. I'm going to order a copy of "The Mythical Man-Month" for Boeing ... they need to get way back to the basics. (Where's Margaret Hamilton when you need here?

> I'm going to order a copy of "The Mythical Man-Month" for Boeing too late. Boeing is already deep in Agile, a methodology which promises that a child can be delivered by the way of 9 incremental monthly deliveries. https://www.infosysconsultinginsights.com/2019/06/12/the-ris... "Boeing was an early Agile adopter in 2008 surpassing its rival, Airbus, in 2012 by deploying a newly renovated 737 Max 8 faster to market.…

"Individuals and Interaction" over "Process and Tools" doesn't seem like a great idea when developing software that handles life or death scenarios. Boeing, being the finatialized zombie company that they are now though have probably run some economic analysis and determined the optomal time to test / cost of life ratio. They must have determined that the cost of adequately testing their software is waaaaay more expensive than losing an astronaut here and there or some plebian passengers.

Re: Starliner faced “catastrophic” failure before software bug found

#32
post #8

"Given the potential for systemic issues at Boeing, I would also note that NASA has decided to proceed with an organizational safety assessment with Boeing as they previously conducted with SpaceX"

Ah so just the fact that Boeing has been around for half a century doesn't absolve them from being subject to safety reviews? Nice to see some sense.

It's McDonnell-Douglas with a Boeing name -- beancounters run the show now.

Re: Starliner faced “catastrophic” failure before software bug found

#33
post #15

On a certain blog that is completely outside acceptable standards for wrongthink and political correctness, a very popular topic of late is why NASA seems to have it in for Elon Musk Personally and SpaceX generally. The commonly stated reasons, and I will be paraphrasing and transliterating freely, are: HR culture defining administration wide objectives and methods and reasoning, professional embarrassment over langu…

> I think NASA has become a political creature NASA has always been a political creature, but its mission has changed over the years. Its original mission was to beat the USSR into space. Its new mission is to funnel money to key congressional districts. But it has always been political. Science was always a facade. Source: I worked for NASA for 15 years (1988-2000, 2001-2004).

The saddest thing about NASA is that the remarkable engineering and scientific capability it possesses... is managed by NASA. It's a great example of one of the most profoundly dysfunctional bureaucracies within the U.S. Government.

Re: Starliner faced “catastrophic” failure before software bug found

#34
post #11

""While this anomaly was corrected in flight, if it had gone uncorrected it would have led to erroneous thruster firing and uncontrolled motion during SM separation for deorbit, with the potential for catastrophic spacecraft failure," Hill said during the meeting." I guess some things just never get old, citing from https://en.wikipedia.org/wiki/Soyuz_5 : "The flight was also memorable for its dramatic re-entry. The…

Yet another crazy story from the USSR space program I was unaware of. Ice in their veins, for sure.

Re: Starliner faced “catastrophic” failure before software bug found

#35
post #10
post #5

Earlier quoted context omitted.

It depends on if the crew would have been able to control those thrusters themselves. Obviously you want the entire system to be autonomous enough that no crew interaction is required but things do happen and the crew needs to be able to act and fix the problem if capsule can't do it nor the ground. When the Starliner started a burn at the wrong time, a crew would have been able to stop it and prevent the loss of fue…

The "crew would fix it" argument is a very very bad one. Many spacecraft maneuvers need to be very precise in both pointing and direction. Something computers are very good at, humans less so. Also, the crew would first have to know something wrong is going on either based on activity happening that was not planned previously or unexpected data on flight instruments. But guess what is driving those instruments in a m…

Im not disagreeing with you, I suppose, but we did do this before with a lot less sophisticated systems and a lot more manual control. It stands to reason that, given proper training, a pilot of one of these spacecraft could identify a problem and switch to manual.

Re: Starliner faced “catastrophic” failure before software bug found

#36
post #2

> According to the source, Boeing patched a software code error just two hours before the vehicle reentered Earth's atmosphere. Had the error not been caught, the source said, proper thrusters would not open during the reentry process, and the vehicle would have been lost. Uh, that's extremely concerning for a CREWED capsule.

Makes me wonder why put all this effort to make space-travel safe for crews. Why not focus on remotely controlled or AI autonomous vehicles instead?

Re: Starliner faced “catastrophic” failure before software bug found

#37
post #2

> According to the source, Boeing patched a software code error just two hours before the vehicle reentered Earth's atmosphere. Had the error not been caught, the source said, proper thrusters would not open during the reentry process, and the vehicle would have been lost. Uh, that's extremely concerning for a CREWED capsule.

Makes me wonder why put all this effort to make space-travel safe for crews. Why not focus on remotely controlled or AI autonomous vehicles instead?

> Makes me wonder why put all this effort to make space-travel safe for crews

Would you want to board that capsule yourself, otherwise?

> Why not focus on remotely controlled or AI autonomous vehicles instead?

Buzzwords doesn't make something more reliable/less error prone. You really think that by throwing in something like AI, which can fail in unexpected ways, be a good idea?

Re: Starliner faced “catastrophic” failure before software bug found

#38
post #2

> According to the source, Boeing patched a software code error just two hours before the vehicle reentered Earth's atmosphere. Had the error not been caught, the source said, proper thrusters would not open during the reentry process, and the vehicle would have been lost. Uh, that's extremely concerning for a CREWED capsule.

Makes me wonder why put all this effort to make space-travel safe for crews. Why not focus on remotely controlled or AI autonomous vehicles instead?

I think we already do — there have been roughly 15 satellites etc. launched for every human who has ever reached earth orbit over the entire history of human spaceflight.

Re: Starliner faced “catastrophic” failure before software bug found

#39
post #8

"Given the potential for systemic issues at Boeing, I would also note that NASA has decided to proceed with an organizational safety assessment with Boeing as they previously conducted with SpaceX"

Ah so just the fact that Boeing has been around for half a century doesn't absolve them from being subject to safety reviews? Nice to see some sense.

Well, their CEO also doesn’t go on podcasts and smoke pot. Not that I think that’s necessarily a better or worse sign that SpaceX is or is not safe than a CEO drinking moderately in public, but we are prudish about these things in the States.

Re: Starliner faced “catastrophic” failure before software bug found

#40
post #18
post #7

So we know there were catastrophic bugs in the 737 Max, they've found additional bugs that haven't been catastrophic yet and now we hear that the Starliner also has software bugs. I'm going to order a copy of "The Mythical Man-Month" for Boeing ... they need to get way back to the basics. (Where's Margaret Hamilton when you need here?

> I'm going to order a copy of "The Mythical Man-Month" for Boeing too late. Boeing is already deep in Agile, a methodology which promises that a child can be delivered by the way of 9 incremental monthly deliveries. https://www.infosysconsultinginsights.com/2019/06/12/the-ris... "Boeing was an early Agile adopter in 2008 surpassing its rival, Airbus, in 2012 by deploying a newly renovated 737 Max 8 faster to market.…

The baby analogy is pithy, but I don’t really see the comparison.

You don’t do your software development in increments smaller than a month? What does that mean, you spend two months just writing specs?

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