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NASA-LLIS-3716: Lessons Learned - Testbed Limitations May Impact End-to-End Flight System Testing
Abstract: Abstract:
After 11 year of spaceflight, it was discovered that the dual string Stardust/NExT spacecraft was incapable of switching to the redundant flight system. Flight software changes made only 3 ...
After 11 year of spaceflight, it was discovered that the dual string Stardust/NExT spacecraft was incapable of switching to the redundant flight system. Flight software changes made only 3 ...
NASA-LLIS-6216: Lessons Learned - MSL Mobility Assembly Lift Mishap
Abstract: JPL flight hardware was damaged during a lift operation preceding a test of the MSL rover Mobility Assembly due to an undetected mechanical interference that was signaled by an anomalous load cell reading. The load cell ...
NASA-LLIS-4770: Lessons Learned - Recurring Flight Project Problems Evince "Common Threads"
Abstract: Abstract:
A Common Threads Workshop was held by JPL in 1996 and 1997 as a venue for seasoned flight project managers to convey knowledge of recurring problems or situations that dominate the project ...
A Common Threads Workshop was held by JPL in 1996 and 1997 as a venue for seasoned flight project managers to convey knowledge of recurring problems or situations that dominate the project ...
NASA-LLIS-1725: Lessons Learned - Control Blow-By From Pyrotechnic Devices (2006)
Abstract: Abstract:
Significant leakage or "blow-by" of combustion products past the seals within a pyrotechnic cable cutter was detected during pyroshock testing of Mars Exploration Rover. Optical flight ...
Significant leakage or "blow-by" of combustion products past the seals within a pyrotechnic cable cutter was detected during pyroshock testing of Mars Exploration Rover. Optical flight ...
NASA-LLIS-6377: Lessons Learned - Ares Projects Office Knowledge Management Report
Abstract: The Ares Projects Office (APO), located at NASA's Marshall Space Flight Center (MSFC), was chartered to provide the new Ares I crew launch vehicle (CLV) and Ares V cargo launch vehicle (CaLV) space transportation system. ...
NASA-LLIS-5396: Lessons Learned – Cryogenic Tank Rupture/Close Call
Abstract: Abstract:
A composite pressure vessel at the Kennedy Space Center ruptured, causing injury to test team personnel. A lack of adequate independent reviews was the root cause of this mishap. A process ...
A composite pressure vessel at the Kennedy Space Center ruptured, causing injury to test team personnel. A lack of adequate independent reviews was the root cause of this mishap. A process ...
NASA-LLIS-6196: Lessons Learned - Shaker Self-Check Unexpectedly Exceeded the Dynamic Test Limit
Abstract: Shaker system control software generates a self check immediately prior to a test at a signal level that is normally considered to be of insignificant strength compared to test levels. During a dynamic test of the Juno ...
NASA-LLIS-2476: Lessons Learned – Place Flight Scripts Under Configuration Management Prior to ORT
Abstract: Abstract:
When flight scripts developed independently by project personnel are not placed under configuration control early enough in flight software development, multiple versions of the scripts tend ...
When flight scripts developed independently by project personnel are not placed under configuration control early enough in flight software development, multiple versions of the scripts tend ...
NASA-LLIS-1739: Lessons Learned – Thermal Sensor Installation Failures Remain a Problem (2003)
Abstract: Abstract:
There is an extensive history of resistance thermal device (RTD) failures on NASA and DOD missions due to thermally-induced mechanical stress. Recent MER ground and in-flight failures, including ...
There is an extensive history of resistance thermal device (RTD) failures on NASA and DOD missions due to thermally-induced mechanical stress. Recent MER ground and in-flight failures, including ...
NASA-LLIS-2050: Lessons Learned – NASA Study of Flight Software Complexity
Abstract: 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 on ...
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 on ...