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| − | '''STS-51-I''' was the 20th mission of [[NASA]]'s [[Space Shuttle]] program and the sixth flight of [[Space Shuttle Discovery|Space Shuttle ''Discovery'']]. During the mission, ''Discovery'' deployed three [[communications satellite]]s into orbit. The mission launched from [[Kennedy Space Center]], Florida, on August 27, 1985, and landed at |
+ | '''STS-51-I''' was the 20th mission of [[NASA]]'s [[Space Shuttle]] program and the sixth flight of [[Space Shuttle Discovery|Space Shuttle ''Discovery'']]. During the mission, ''Discovery'' deployed three [[communications satellite]]s into orbit. The mission launched from [[Kennedy Space Center]], Florida, on August 27, 1985, and landed at Edwards Air Force Base, California, on September 3. |
==Crew== |
==Crew== |
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The five-man STS 51-I crew included [[Joe H. Engle]], commander; [[Richard O. Covey]], pilot; and [[James van Hoften]], [[John M. Lounge]], and [[William F. Fisher]], mission specialists. Their primary mission was to deploy three commercial communications satellites and retrieve and repair the [[Syncom]] IV-3 satellite, which had been deployed during the [[STS 51-D]] mission in April 1985, but had malfunctioned. In addition, a mid-deck materials processing experiment, the Physical Vapor Transport Organic Solid Experiment (PVTOS), was flown aboard ''Discovery''. |
The five-man STS 51-I crew included [[Joe H. Engle]], commander; [[Richard O. Covey]], pilot; and [[James van Hoften]], [[John M. Lounge]], and [[William F. Fisher]], mission specialists. Their primary mission was to deploy three commercial communications satellites and retrieve and repair the [[Syncom]] IV-3 satellite, which had been deployed during the [[STS 51-D]] mission in April 1985, but had malfunctioned. In addition, a mid-deck materials processing experiment, the Physical Vapor Transport Organic Solid Experiment (PVTOS), was flown aboard ''Discovery''. |
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| − | The three communications satellites were [[Optus fleet of satellites#Aussat (Optus) A1|Aussat]] 1, a multi-purpose spacecraft owned by Australia; ASC-1, owned and operated by the American Satellite Company; and Syncom IV-4, leased to the |
+ | The three communications satellites were [[Optus fleet of satellites#Aussat (Optus) A1|Aussat]] 1, a multi-purpose spacecraft owned by Australia; ASC-1, owned and operated by the American Satellite Company; and Syncom IV-4, leased to the Department of Defense by its builder, [[Hughes Space and Communications|Hughes Co.]] Both Aussat 1 and ASC-1 were deployed on the day of the launch, 27 August. Syncom IV-4 was deployed two days later. All three achieved their planned geosynchronous orbits and became operational. |
On the fifth day of the mission, astronauts Fisher and van Hoften began repair efforts on the malfunctioning Syncom IV-3, following a successful rendezvous maneuver by ''Discovery''. The effort was slowed by a problem in the [[Canadarm|Remote Manipulator System]] elbow joint. After a second EVA by Fisher and van Hoften, the satellite's control lever was repaired, permitting commands from the ground to activate the spacecraft's systems and eventually send it into its proper geosynchronous orbit. The two EVAs lasted a total of 11 hours and 46 minutes. |
On the fifth day of the mission, astronauts Fisher and van Hoften began repair efforts on the malfunctioning Syncom IV-3, following a successful rendezvous maneuver by ''Discovery''. The effort was slowed by a problem in the [[Canadarm|Remote Manipulator System]] elbow joint. After a second EVA by Fisher and van Hoften, the satellite's control lever was repaired, permitting commands from the ground to activate the spacecraft's systems and eventually send it into its proper geosynchronous orbit. The two EVAs lasted a total of 11 hours and 46 minutes. |
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| − | ''Discovery'' landed on Runway 23 at |
+ | ''Discovery'' landed on Runway 23 at Edwards Air Force Base at 6:16 am PDT on September 3, 1985. The flight lasted a total of 7 days, 2 hours, 18 minutes and 42 seconds, during which the shuttle completed 111 orbits of the Earth. |
==Gallery== |
==Gallery== |
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{{Space Shuttle Discovery}} |
{{Space Shuttle Discovery}} |
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| + | {{Wikipedia|STS-51-I}} |
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{{DEFAULTSORT:STS-051-I}} |
{{DEFAULTSORT:STS-051-I}} |
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Latest revision as of 22:38, 6 August 2016
Template:Infobox spaceflight
STS-51-I was the 20th mission of NASA's Space Shuttle program and the sixth flight of Space Shuttle Discovery. During the mission, Discovery deployed three communications satellites into orbit. The mission launched from Kennedy Space Center, Florida, on August 27, 1985, and landed at Edwards Air Force Base, California, on September 3.
Crew[]
| Position | Astronaut | |
|---|---|---|
| Commander | Joe H. Engle Second and last[1] spaceflight | |
| Pilot | Richard O. Covey First spaceflight | |
| Mission Specialist 1 | James D. A. van Hoften Second spaceflight | |
| Mission Specialist 2 | John M. Lounge First spaceflight | |
| Mission Specialist 3 | William F. Fisher Only spaceflight | |
Spacewalks[]
- Fisher and van Hoften – EVA 1
- EVA 1 Start: August 31, 1985
- EVA 1 End: August 31, 1985
- Duration: 7 hours, 20 minutes
- Fisher and van Hoften – EVA 2
- EVA 2 Start: September 1, 1985
- EVA 2 End: September 1, 1985
- Duration: 4 hours, 26 minutes
Crew seating arrangements[]
| Seat[2] | Launch | Landing |  Seats 1–4 are on the Flight Deck. Seats 5–7 are on the Middeck. |
|---|---|---|---|
| S1 | Engle | Engle | |
| S2 | Covey | Covey | |
| S3 | van Hoften | Fisher | |
| S4 | Lounge | Lounge | |
| S5 | Fisher | van Hoften |
Launch[]
Template:LaunchAttempt
Mission summary[]
Discovery launched at 6:58 am EDT on August 27, 1985. Two earlier launch attempts, one on August 24 and another on August 25, were scrubbed – the first because of poor weather, and the second because the backup orbiter computer failed and had to be replaced. The successful launch on August 27 took place just as an approaching storm front reached the launch pad area.
The five-man STS 51-I crew included Joe H. Engle, commander; Richard O. Covey, pilot; and James van Hoften, John M. Lounge, and William F. Fisher, mission specialists. Their primary mission was to deploy three commercial communications satellites and retrieve and repair the Syncom IV-3 satellite, which had been deployed during the STS 51-D mission in April 1985, but had malfunctioned. In addition, a mid-deck materials processing experiment, the Physical Vapor Transport Organic Solid Experiment (PVTOS), was flown aboard Discovery.
The three communications satellites were Aussat 1, a multi-purpose spacecraft owned by Australia; ASC-1, owned and operated by the American Satellite Company; and Syncom IV-4, leased to the Department of Defense by its builder, Hughes Co. Both Aussat 1 and ASC-1 were deployed on the day of the launch, 27 August. Syncom IV-4 was deployed two days later. All three achieved their planned geosynchronous orbits and became operational.
On the fifth day of the mission, astronauts Fisher and van Hoften began repair efforts on the malfunctioning Syncom IV-3, following a successful rendezvous maneuver by Discovery. The effort was slowed by a problem in the Remote Manipulator System elbow joint. After a second EVA by Fisher and van Hoften, the satellite's control lever was repaired, permitting commands from the ground to activate the spacecraft's systems and eventually send it into its proper geosynchronous orbit. The two EVAs lasted a total of 11 hours and 46 minutes.
Discovery landed on Runway 23 at Edwards Air Force Base at 6:16 am PDT on September 3, 1985. The flight lasted a total of 7 days, 2 hours, 18 minutes and 42 seconds, during which the shuttle completed 111 orbits of the Earth.
Gallery[]
Wake-up calls[]
NASA began a tradition of playing music to astronauts during the Gemini program, and first used music to wake up a flight crew during Apollo 15. Each track is specially chosen, often by the astronauts' families, and usually has a special meaning to an individual member of the crew, or is applicable to their daily activities.[3]
| Flight Day | Song | Artist/Composer |
|---|---|---|
| Day 2 | "Waltzing Matilda"[4] | |
| Day 3 | "Over the Rainbow" | Judy Garland |
| Day 4 | "I Saw the Light" | Willie Nelson |
| Day 5 | "I Get Around" | Beach Boys |
| Day 6 | "Lucky Old Sun" | Willie Nelson |
| Day 7 | "Stormy Weather"[5] | Willie Nelson |
| Day 8 | "Living in the USA" | Linda Ronstadt |
See also[]
References[]
This article incorporates http://www.jsc.nasa.gov/policies.html#Guidelines public domain material from websites or documents of the National Aeronautics and Space Administration.
- ↑ Engle exceeded an altitude of Template:Convert/round kilometres (50 mi) three times as a test pilot in the X-15 program; these are regarded spaceflights by the US Air Force but not by any other body and did not reach what is recognised internationally as the edge of space. STS-51-I was his second Space Shuttle flight, and his second flight above the Kármán line.
- ↑ "STS-51I". Spacefacts. http://spacefacts.de/mission/english/sts-51i.htm. Retrieved February 26, 2014.
- ↑ Template:Cite news
- ↑ Chosen to waken the crew as they passed over Australia.
- ↑ Chosen due to Hurricane Elena, which had been observed earlier from Discovery.
External links[]
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