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NASA-LLIS-3339
Lessons Learned - Space Shuttle Fuel Cell System Missing Critical Instrumentation Forces Turnaround Testing Complexities
Year: 2010
Abstract: Abstract:
As originally designed, the Shuttle Orbiter's fuel cells did not adequately monitor the health and status of individual cells. Even though the fuel cells were previously modified to add the Cell Performance Monitor (CPM) capability (which provided aggregate substack [32 cells] voltages to each fuel cell), they still did not provide the visibility the ground needed to determine that the individual cells (96 cells per fuel cell) for each fuel cell were healthy. This resulted in the premature termination of STS-83 mission. For new spacecraft systems design and development, it is critical that a worst-case scenario evaluation be performed on critical flight systems so that health status is available at the level required to determine the system's health.
As originally designed, the Shuttle Orbiter's fuel cells did not adequately monitor the health and status of individual cells. Even though the fuel cells were previously modified to add the Cell Performance Monitor (CPM) capability (which provided aggregate substack [32 cells] voltages to each fuel cell), they still did not provide the visibility the ground needed to determine that the individual cells (96 cells per fuel cell) for each fuel cell were healthy. This resulted in the premature termination of STS-83 mission. For new spacecraft systems design and development, it is critical that a worst-case scenario evaluation be performed on critical flight systems so that health status is available at the level required to determine the system's health.
Subject: Crew operations and support concepts
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:46:22Z | |
| date available | 2017-09-04T15:46:22Z | |
| date copyright | 07/25/2010 | |
| date issued | 2010 | |
| identifier other | PVAYHDAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/49058 | |
| description abstract | Abstract: As originally designed, the Shuttle Orbiter's fuel cells did not adequately monitor the health and status of individual cells. Even though the fuel cells were previously modified to add the Cell Performance Monitor (CPM) capability (which provided aggregate substack [32 cells] voltages to each fuel cell), they still did not provide the visibility the ground needed to determine that the individual cells (96 cells per fuel cell) for each fuel cell were healthy. This resulted in the premature termination of STS-83 mission. For new spacecraft systems design and development, it is critical that a worst-case scenario evaluation be performed on critical flight systems so that health status is available at the level required to determine the system's health. | |
| language | English | |
| title | NASA-LLIS-3339 | num |
| title | Lessons Learned - Space Shuttle Fuel Cell System Missing Critical Instrumentation Forces Turnaround Testing Complexities | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;2010 | |
| contenttype | fulltext | |
| subject keywords | Crew operations and support concepts | |
| subject keywords | DDT/E | |
| subject keywords | Engineering design and project processes and standards | |
| subject keywords | Ground processing and manifesting | |
| subject keywords | Ground support systems | |
| subject keywords | Launch support systems | |
| subject keywords | Launch Systems | |
| subject keywords | Logistics and maintenance | |
| subject keywords | Long term sustainability and maintenance planning | |
| subject keywords | Orbiting Vehicles | |
| subject keywords | Risk Management/Assessment | |
| subject keywords | Vehicle concepts |