STS-51A
From The Space Library
 | |
| Organization | NASA-Office of Space Flight (United States) |
|---|---|
| Mission type | Human Crew |
| Launch date | November 8, 1984 |
| Launch vehicle | Space Shuttle |
| Launch site | Cape Canaveral, United States |
| COSPAR ID | 1984-113A |
| Inclination | 28.5 degrees |
| Experiments | Here |
| Alternate Names | STS 14,15382 |
| Additional Information | Here |
| Data Collection | Here |
| Payload Mass Up | 20523 kg |
| Payload Mass Down | 11296.82 kg |
| Orbiter | Discovery |
| Lift Off Mass | 2,054,500.45 kg |
| Orbiter Weight at Liftoff | 119,692.73 kg |
| Orbiter Weight at Landing | 94,320.45 kg |
| Landed | Runway 15 at Kennedy Space Center, Fla. |
| Orbits of Earth | 126 |
| Orbital Altitude | 161 nautical miles (185 statute miles) |
Contents |
Crew
- Commander: Frederick Hauck
- Pilot: David Walker
- Mission Specialist 1: Joseph Allen
- Mission Specialist 2: Anna Fisher
- Mission Specialist 3: Dale Gardner
Mission
STS 51-A was the second Discovery shuttle flight. On board were Frederick Hauck, David Walker, Joseph Allen, Anna Fisher, and Dale Gardner. Canadian communications satellite TELESAT-H (ANIK), attached to Payload Assist Module-D (PAM-D), was deployed into geosynchronous orbit on flight day two. On third day, defense communications satellite SYNCOM IV-I (also known as LEASAT-1) was deployed. Allen and Gardner, wearing jet-propelled manned maneuvering units, retrieved two malfunctioning satellites: PALAPA-B2 and WESTAR-VI, both deployed on Mission 41-B. Fisher operated the remote manipulator system, grappling the satellites and depositing them in the payload bay. Middeck payloads consisted of: Diffusive Mixing of Organic Solutions (DMOS), and Radiation Monitoring Equipment (RME). The mission duration was 191 hours 44 minutes 56 seconds.
EVA
Extravehicular Activity (EVA) conducted by Joseph Allen and Dale Gardner during two spacewalks for a total of 12 hours, 14 minutes. EVA 1, 6 hours, 13 minutes; EVA 2, 6 hours and 1 minute. Manned maneuvering unit (MMU) operating time Allen 2 hours, 22 minutes, Gardner 1 hour, 40 minutes.
Payload
Telesat (Canada communications satellite)-H with Payload Assist Module (PAM)-D deployment, Syncom IV-1 communications satellite deployment with its unique stage; retrieval of PALAPA B-2 and WESTAR VI communications satellites with PAM-D that failed to ignite on the STS-41-B mission. Manned maneuvering unit (MMU) used for retrieval. Diffusive Mixing of Organic Solutions (DMOS) experiment
Mission patch: 
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