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13 valves failed to open on Boeing’s Starliner spacecraft
13 valves failed to open on Boeing’s Starliner spacecraft, a more widespread problem than previously reported. The company said it has been able to fix a number of them and still holds out hope for a test flight this month (www.washingtonpost.com) Más...Sort type: [Top] [Newest]
This issue has now led to the launch being postponed indefinitely:
https://www.space.com/boeing-starliner-launch-delayed-indefinitely
https://www.space.com/boeing-starliner-launch-delayed-indefinitely
Wrong grease?
non-cryo compatible grease could stick the valves closed...
or debris, causing jammimg? I know a well known valve manufacturer had problems about a decade ago.
non-cryo compatible grease could stick the valves closed...
or debris, causing jammimg? I know a well known valve manufacturer had problems about a decade ago.
I remember the era of DC planes, plz come back
https://www.scientiststudy.com/2021/08/13-valves-failed-to-open-on-boeings.html
James, thanks for the follow-up article. Has an interesting photo of two technicians working on Starliner in the high-bay. excerpts --
" ....Work progressed to restore functionality to several valves in the Starliner that did not open as designed during countdown for the Aug. 3 launch attempt.
The valves connect to thrusters that enable abort and in-orbit maneuvering ..."
" ....Work progressed to restore functionality to several valves in the Starliner that did not open as designed during countdown for the Aug. 3 launch attempt.
The valves connect to thrusters that enable abort and in-orbit maneuvering ..."
As a result, it mixed with traces of moisture trapped in the valve and formed nitric acid. That acid buildup caused corrosion which in turn made the valves stick closed.
Source https://www.space.com/boeing-starliner-oft-2-indefinite-delay-factory-return