NASA-LLIS-0157

Lessons Learned - External Tank (ET) Vent Deceleration Unit.

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T16:46:16Z
date available	2017-09-04T16:46:16Z
date copyright	33885
date issued	1992
identifier other	WBZCQCAAAAAAAAAA.pdf
identifier uri	http://yse.yabesh.ir/std/handle/yse/109588
description abstract	Description of Driving Event: The external tank's gaseous hydrogen vent arm provides for venting of the LH2 tank, pneumatics, and electrical services to the ground umilical carrier. The deceleration unit has failed twice. These failures were caused by a low fluid level in the shock absorber. During one launch failure the QD was damaged and broke in half. Several hours after launch, the detanking of the LH2 dewer tank was started and gaseous hydrogen vented out of the broken QD/pipe, instead of venting to the Pad-A burn pond as designated.
language	English
title	NASA-LLIS-0157	num
title	Lessons Learned - External Tank (ET) Vent Deceleration Unit.	en
type	standard
page	2
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;1992
contenttype	fulltext
subject keywords	Energetic Materials - Explosive/Propellant/Pyrotechnic
subject keywords	Facilities
subject keywords	Ground Equipment
subject keywords	Ground Operations