NASA-LLIS-0915

Lessons Learned – Propellant Management for Geosynchronous Satellite

contributor author	NASA - National Aeronautics and Space Administration (NASA)
date accessioned	2017-09-04T16:54:10Z
date available	2017-09-04T16:54:10Z
date copyright	09/29/2000
date issued	2000
identifier other	WXTEQCAAAAAAAAAA.pdf
identifier uri	https://yse.yabesh.ir/std/handle/yse/117620
description abstract	Description of Driving Event: Hydrazine fuel in pressurized tanks is used for satellite stationkeeping. Fuel consumption log indicated sufficient fuel to extend mission beyond date originally planned. During a north-south stationkeeping in July 1998, thruster firing was aborted due to satellite attitude instability caused by uneven thruster firing. This was determined to be caused by two-phase flow of liquid hydrazine and Helium pressurant gas to thrusters in the odd half-system. This only occurs when hydrazine in a tank is nearly depleted. The fuel log indicated that the tanks in both the odd and even half system should have had sufficient fuel for several more stationkeeping maneuvers, contrary to the observed performance.
language	English
title	NASA-LLIS-0915	num
title	Lessons Learned – Propellant Management for Geosynchronous Satellite	en
type	standard
page	2
status	Active
tree	NASA - National Aeronautics and Space Administration (NASA):;2000
contenttype	fulltext
subject keywords	Configuration Management
subject keywords	Energetic Materials - Explosive/Propellant/Pyrotechnic
subject keywords	Flight Operations
subject keywords	Parts
subject keywords	Materials & Processes
subject keywords	Spacecraft