درباره ما
NASA-LLIS-0909
Lessons Learned – Satellite Deployments
Year: 2000
Abstract: Description of Driving Event:
During the launch of the NOAA-K weather satellite there was an anomalous deployment of the Very High Frequency Real Time Antenna (VRA) and an incomplete deployment of the -Y Deployable Sunshade.
The VRA is a two-stage deployment. Phase 1 deploys 76 degrees followed by the Phase 2, which deploys through an angle of 166 degrees. The Phase 1 slowly deployed to only approximately 58 degrees instead of its planned 76 degrees. The Phase 2 deployed its full 166 degrees. This left the VRA mispointed by approximately 18 degrees. However, this mispointing does not affect data recovery via the VRA.
The telemetry indicated the -Y sunshade had not fully deployed. The incomplete sunshade deployment could not by correlated to other indirect observables, since the -Y deployable sunshade is not required for thermal control in the AM orbit.
During the launch of the NOAA-K weather satellite there was an anomalous deployment of the Very High Frequency Real Time Antenna (VRA) and an incomplete deployment of the -Y Deployable Sunshade.
The VRA is a two-stage deployment. Phase 1 deploys 76 degrees followed by the Phase 2, which deploys through an angle of 166 degrees. The Phase 1 slowly deployed to only approximately 58 degrees instead of its planned 76 degrees. The Phase 2 deployed its full 166 degrees. This left the VRA mispointed by approximately 18 degrees. However, this mispointing does not affect data recovery via the VRA.
The telemetry indicated the -Y sunshade had not fully deployed. The incomplete sunshade deployment could not by correlated to other indirect observables, since the -Y deployable sunshade is not required for thermal control in the AM orbit.
Subject: Flight Equipment
Show full item record
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T18:21:02Z | |
| date available | 2017-09-04T18:21:02Z | |
| date copyright | 08/01/2000 | |
| date issued | 2000 | |
| identifier other | HXTEQCAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std;jsery=autho162s7D8308/handle/yse/203505 | |
| description abstract | Description of Driving Event: During the launch of the NOAA-K weather satellite there was an anomalous deployment of the Very High Frequency Real Time Antenna (VRA) and an incomplete deployment of the -Y Deployable Sunshade. The VRA is a two-stage deployment. Phase 1 deploys 76 degrees followed by the Phase 2, which deploys through an angle of 166 degrees. The Phase 1 slowly deployed to only approximately 58 degrees instead of its planned 76 degrees. The Phase 2 deployed its full 166 degrees. This left the VRA mispointed by approximately 18 degrees. However, this mispointing does not affect data recovery via the VRA. The telemetry indicated the -Y sunshade had not fully deployed. The incomplete sunshade deployment could not by correlated to other indirect observables, since the -Y deployable sunshade is not required for thermal control in the AM orbit. | |
| language | English | |
| title | NASA-LLIS-0909 | num |
| title | Lessons Learned – Satellite Deployments | en |
| type | standard | |
| page | 3 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;2000 | |
| contenttype | fulltext | |
| subject keywords | Flight Equipment | |
| subject keywords | Hardware | |
| subject keywords | Spacecraft | |
| subject keywords | Test & Verification |