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NASA-LLIS-0124
Lessons Learned - Payload Bay Duct Heater Overtemp
Year: 1992
Abstract: Description of Driving Event:
The payload bay duct heater adds measured quantities of heat independently to each duct system. This raises the temperature of the process air from the cooling coils to the desired interface temperature leaving the portable purge unit and engine control system room. With no overtemp switches installed, excessive heat from the payload bay duct heaters burned through the duct insulation, causing severe damage with a potential for orbiter damage.
The payload bay duct heater adds measured quantities of heat independently to each duct system. This raises the temperature of the process air from the cooling coils to the desired interface temperature leaving the portable purge unit and engine control system room. With no overtemp switches installed, excessive heat from the payload bay duct heaters burned through the duct insulation, causing severe damage with a potential for orbiter damage.
Subject: Hardware
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T18:50:54Z | |
| date available | 2017-09-04T18:50:54Z | |
| date copyright | 08/20/1992 | |
| date issued | 1992 | |
| identifier other | KVYCQCAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;jsessionid=3826AF679D40527318548F1EFDEC014A/handle/yse/232311 | |
| description abstract | Description of Driving Event: The payload bay duct heater adds measured quantities of heat independently to each duct system. This raises the temperature of the process air from the cooling coils to the desired interface temperature leaving the portable purge unit and engine control system room. With no overtemp switches installed, excessive heat from the payload bay duct heaters burned through the duct insulation, causing severe damage with a potential for orbiter damage. | |
| language | English | |
| title | NASA-LLIS-0124 | num |
| title | Lessons Learned - Payload Bay Duct Heater Overtemp | en |
| type | standard | |
| page | 2 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1992 | |
| contenttype | fulltext | |
| subject keywords | Hardware | |
| subject keywords | Launch Vehicle |