STS-51-D

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Mission emblem
Mission emblem STS-51-D
Mission dates
Mission: STS-51-D
COSPAR-ID : 1985-028A
Crew: 7th
Begin: April 12, 1985, 13:59:05  UTC
Starting place: Kennedy Space Center , LC-39A
Number of EVA : 1
Landing: April 19, 1985, 13:54:28 UTC
Landing place: Kennedy Space Center, Lane 33
Flight duration: 6d 23h 55m 23s
Earth orbits: 110
Track height: 535 km
Orbit inclination : 28.5 °
Covered track: 4.6 million km
Payload: TELESAT-9 and LEASAT-3
Team photo
v. l. No. Front: Karol Bobko, Donald Williams, Rhea Seddon, Jeffrey Hoffman Back: David Griggs, Charles Walker, Jake Garn
v. l. No. Front: Karol Bobko, Donald Williams, Rhea Seddon, Jeffrey Hoffman
Back: David Griggs, Charles Walker, Jake Garn
◄ Before / After ►
STS-51-C STS-51-B

STS-51-D ( english S pace T ransportation S ystem ) is a mission designation for the US Space Shuttle Discovery (OV-103) of NASA . The launch took place on April 12, 1985. It was the fourth flight of the space shuttle Discovery and the 16th flight of a space shuttle.

team

Charles Walker was once again an industrial astronaut for the US aerospace company McDonnell Douglas, with Jake Garn the first politician in space.

Mission overview

The launch was originally scheduled for March 19, 1985. After the STS-51-E mission was canceled, the 51-D and 51-E payloads were reassembled. An accident occurred in the Orbiter Processing Facility in which the cargo hold door of the Discovery was damaged. Therefore, the start of the mission on March 28th had to be postponed to April 12th. On the start day itself, the countdown was stopped for 55 minutes because a ship had entered the sea area, which was closed to the launch of the solid rocket rocket.

STS-51-D deployed the TELESAT-9 and LEASAT-3 satellites . With the latter, however, the automatic commissioning of the antenna and the engine did not work. The mission was extended by two days at short notice in order to have the astronaut fix the defect, but this did not succeed. The satellite was then recaptured and repaired on the STS-51-I mission . Various experiments were also carried out, including those developed by American students.

On landing at the Kennedy Space Center in Florida, damage to the shuttle's braking system and a blown tire occurred. All subsequent landings on Edwards Air Force Base were therefore planned until a nose wheel control was installed .

See also

Web links

Commons : STS-51-D  - album with pictures, videos and audio files