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NASA-LLIS-1412

Lessons Learned – Plasma Arcs from Pyro Firing May Cause Prolonged NSI Shorts (2003)

contributor authorNASA - National Aeronautics and Space Administration (NASA)
date accessioned2017-09-04T16:19:43Z
date available2017-09-04T16:19:43Z
date copyright04/19/2004
date issued2004
identifier otherTIWEQCAAAAAAAAAA.pdf
identifier urihttps://yse.yabesh.ir/std/handle/yse/83140
description abstractAbstract:
NSI firing circuit design has not previously taken into account the high probability of plasma shorts and subsequent hard-shorting, as seen during testing on MER, which allowed ground (chassis) return current during pyrotechnic events. Mars Exploration Rover experience has shown that molten NSI fragments can cause a prolonged NSI pin-to-case short that can damage flight hardware. Thirteen design, analysis, inspection, and test recommendations in the areas of Parts Selection and Reliability Analysis, Power/Pyro Design, and System Grounding are offered to account for this possibility.
languageEnglish
titleNASA-LLIS-1412num
titleLessons Learned – Plasma Arcs from Pyro Firing May Cause Prolonged NSI Shorts (2003)en
typestandard
page7
statusActive
treeNASA - National Aeronautics and Space Administration (NASA):;2004
contenttypefulltext
subject keywordscable cutter
subject keywordsEnergetic Materials - Explosive/Propellant/Pyrotechnic
subject keywordsFlight Equipment
subject keywordsGround Operations
subject keywordsHardware
subject keywordsParts Materials & Processes
subject keywordsPayloads
subject keywordspin-puller
subject keywordsSafety & Mission Assurance
subject keywordssmart NSI
subject keywordssneak circuit
subject keywordsSpacecraft
subject keywordsTest & Verification
subject keywordsTest Article
subject keywordstest-induced failure


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