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NASA-LLIS-2049

Lessons Learned – Improving Fault Management for Spaceflight Missions

active, Most Current
Organization: NASA
Publication Date: 21 April 2009
Status: active
Page Count: 6
scope:

Abstract:

Fault management subsystems reveal pervasive architecture, design, and verification/validation (V&V) problems during both technical reviews of spaceflight missions and in-flight. An industry-wide Spacecraft Fault Management Workshop was held in April 2008 to characterize fault management practices, identify trends, and provide a roadmap for improvements. A final report on the workshop provides 12 sets of recommendations in the areas of requirements definition, design, and test practices for fault management.

Document History

NASA-LLIS-2049
April 21, 2009
Lessons Learned – Improving Fault Management for Spaceflight Missions
Abstract: Fault management subsystems reveal pervasive architecture, design, and verification/validation (V&V) problems during both technical reviews of spaceflight missions and in-flight. An...

References

This document references:
NASA-LLIS-2044 - Lessons Learned – MRO Articulation Keep-Out Zone Anomaly
Published by NASA on April 7, 2009
Abstract: An articulating solar array collided with the MRO spacecraft due to inadequate definition and verification/validation of system-level design requirements for implementing the appendage's...
This document references:
NASA-LLIS-1799 - Lessons Learned – Erroneous Onboard Status Reporting Disabled IMAGE's Radio
Published by NASA on July 10, 2007
Abstract: The loss of the IMAGE satellite was attributed to a Single Event Upset-induced "instant trip" of the Solid State Power Controller (SSPC) that supplies power to the single-string...
This document references:
NASA-LLIS-2048 - Lessons Learned – Autonomous Transfer to Reaction Wheel Control May Lead to Safing Instability
Published by NASA on April 14, 2009
Abstract: In-flight the EPOXI spacecraft exhibited a safe mode instability after a portion of the torque distribution was assigned to a reaction wheel that had been powered down. It was determined...
This document references:
NASA-LLIS-1805 - Lessons Learned – Mars Global Surveyor (MGS) Spacecraft Loss of Contact
Published by NASA on September 4, 2007
Abstract: Contact was lost with the Mars Global Surveyor (MGS) spacecraft in November 2006 during its 4th extended mission. A routine memory load command sent to an incorrect address 5 months earlier...
This document references:
NASA-LLIS-2041 - Lessons Learned – MRO Spaceflight Computer Side Swap Anomalies [Export Version]
Published by NASA on December 16, 2008
Abstract: A few months into its mission, MRO began experiencing unexpected side swaps to the redundant flight computer that placed the spacecraft into safe mode. The problem was traced to subtle...
This document references:
NASA-LLIS-1778 - Lessons Learned - Anomalous Flight Conditions May Trigger Common-Mode Failures in Highly Redundant Systems
Published by NASA on March 6, 2007
Abstract: After launch, MRO was found to be susceptible to a solar flare event during the critical aerobraking phase of the mission that could corrupt the multiply redundant identical file systems in...
This document is referenced by:
NASA-LLIS-2050 - Lessons Learned – NASA Study of Flight Software Complexity
Published by NASA on May 5, 2009
Abstract: Flight software development problems led NASA to study the factors that have led to the accelerating growth in flight software size and complexity. The March 2009 report on the NASA Study...
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