NASA-LLIS-2045

Lessons Learned – Failure of Pyrotechnic Operated Valves with Dual Initiators

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T16:32:17Z
date available	2017-09-04T16:32:17Z
date copyright	05/11/2009
date issued	2009
identifier other	UQYCQCAAAAAAAAAA.pdf
identifier uri	https://yse.yabesh.ir/std/handle/yse/95687
description abstract	Abstract: Four spacecraft propulsion system pyrovalve no-fire failures were investigated by the NESC (NASA Engineering and Safety Center). In all four cases, a normally closed pyrovalve failed to actuate during tests in which simultaneous firing of dual initiators failed to ignite the booster charge. Timing of redundant initiator firings is crucial for reliable operation of pyrovalves. Dual simultaneous firing (less than 10 microseconds skew) is not as robust as a single firing and should be avoided.
language	English
title	NASA-LLIS-2045	num
title	Lessons Learned – Failure of Pyrotechnic Operated Valves with Dual Initiators	en
type	standard
page	3
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;2009
contenttype	fulltext
subject keywords	Additional Categories.Energetic Materials - Explosive/Propellant/Pyrotechnic
subject keywords	Additional Categories.Hardware
subject keywords	Additional Categories.Spacecraft