Home - Search - Browse - Alphabetic Index: 0- 1- 2- 3- 4- 5- 6- 7- 8- 9
A- B- C- D- E- F- G- H- I- J- K- L- M- N- O- P- Q- R- S- T- U- V- W- X- Y- Z
TDRS
TDRS
TDRS
Credit: Lockheed-Martin
American military communications satellite. Satellite communications network, for use by Shuttle and US military satellites. Communication satellite built by TRW for NASA, USA. Launched 1983 - 1993.

AKA: Tracking and Data Relay Satellite. Status: Operational 1983. First Launch: 1983-04-04. Last Launch: 1995-07-13. Number: 7 . Gross mass: 2,240 kg (4,930 lb). Span: 17.40 m (57.00 ft).

When first launched, the TDRS satellites were the largest, most sophisticated communications satellites ever built. The seventh vehicle in the series was ordered as a replacement when TDRS-2 was lost in the Challenger accident.

The hexagonal spacecraft and payload modules were 3-axis stabilized. The zero momentum biased control system used reaction wheels and Earth sensors. Two solar arrays provided 2 kW BOL (1.7 kW EOL). These arrays had an area of ~ 29 sq. m and were articulated about one axis. Two 40 Ahr NiCd batteries provided power during eclipse. A hydrazine propulsion system with 24 4.45 N thrusters was used for orbit circularization and orbit maintenance. Spacecraft telemetry and commanding were performed via a Ku-band communications system, with emergency backup provided by an S-band system.

Payload included:

Hughes received a contract on 23 February 1995 for TDRS replacement - $ 481.6 million for 3 HS-601 spacecraft with added Ka band. Last launch was originally set for 2002. Program total cost to 1997 was $ 3.3 billion over 10 years.


More at: TDRS.

Subtopics

STS-26 First shuttle reflight after Challenger disaster. Deployed TDRS 3.

STS-29 Deployed TDRS 4.

STS-41-H Planned Department of Defense or TDRS deployment shuttle mission. Cancelled due to IUS failure.

STS-43 Deployed TDRS 5 satellite.

STS-51-DA Planned TDRS/IUS deployment shuttle mission. Cancelled due to IUS failure.

STS-51-E Planned TDRS/IUS deployment shuttle mission. Cancelled due to IUS failure.

STS-51-L First shuttle launch from pad LC-39B. An O-ring failure in a solid rocket booster led to leaking of hot gases against the external tank; exploded 73 seconds after launch, all seven crew, with no means of escape, were killed when crew cabin hit the ocean.

STS-54 Deployed TDRSS 6.

STS-6 First flight of space shuttle Challenger. First space walk of Shuttle program. Deployed Tracking and Data Relay Satellite.

STS-61-M Planned TDRS/IUS deployment shuttle mission. Cancelled after Challenger disaster.

STS-70 Deployed TDRS 7.

TDRS American military communications satellite. Satellite communications network, for use by Shuttle and US military satellites. Communication satellite built by TRW for NASA, USA. Launched 1983 - 1993.

Family: Communications, Geosynchronous orbit, Military communications sat. Country: USA. Launch Vehicles: Space Shuttle. Projects: STS. Launch Sites: Cape Canaveral, Cape Canaveral LC39A, Cape Canaveral LC39B. Agency: NASA, Contel, TRW. Bibliography: 2, 279, 4150, 4151, 4152, 6, 6968.
Photo Gallery

TDRS 1TDRS 1
Credit: Manufacturer Image


TDRS 7TDRS 7
Credit: Manufacturer Image


STS-6STS-6
Deployment of the TDRS by STS-6 Challenger
Credit: NASA


STS-6STS-6
TDRS satellite over African Rift Valley, Kenya, Africa
Credit: NASA


STS-26STS-26
STS-26 Discovery, Orbiter Vehicle (OV) 103, IUS / TDRS-C deployment
Credit: NASA


STS-26STS-26
STS-26 Discovery, Orbiter Vehicle (OV) 103, IUS / TDRS-C deployment
Credit: NASA


STS-26STS-26
STS-26 Discovery, Orbiter Vehicle (OV) 103, IUS / TDRS-C deployment
Credit: NASA


STS-26STS-26
STS-26 Discovery, Orbiter Vehicle (OV) 103, IUS / TDRS-C deployment
Credit: NASA


STS-26STS-26
STS-26 Discovery, Orbiter Vehicle (OV) 103, IUS / TDRS-C deployment
Credit: NASA


STS-29STS-29
STS-29 IUS with TDRS-D drifts above Earth's surface during post deployment
Credit: NASA


STS-29STS-29
STS-29 IUS with TDRS-D after deployment from Discovery, OV-103
Credit: NASA



1978 April 6 - . LV Family: Titan, Shuttle. Launch Vehicle: Titan 34D, Shuttle.
1983 April 4 - . 18:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39A. Launch Platform: MLP2. LV Family: Shuttle. Launch Vehicle: Space Shuttle.
1986 January 28 - . 16:38 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39B. Launch Platform: MLP2. LV Family: Shuttle. Launch Vehicle: Space Shuttle. FAILURE: Failure.
1988 September 29 - . 15:37 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39B. Launch Platform: MLP2. LV Family: Shuttle. Launch Vehicle: Space Shuttle.
1989 March 13 - . 14:57 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39B. Launch Platform: MLP2. LV Family: Shuttle. Launch Vehicle: Space Shuttle.
1991 August 2 - . 15:02 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39A. Launch Platform: MLP1. LV Family: Shuttle. Launch Vehicle: Space Shuttle.
1993 January 13 - . 13:59 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39B. Launch Platform: MLP2. LV Family: Shuttle. Launch Vehicle: Space Shuttle.
1995 July 13 - . 13:41 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC39B. Launch Platform: MLP2. LV Family: Shuttle. Launch Vehicle: Space Shuttle.

Back to top of page
Home - Search - Browse - Alphabetic Index: 0- 1- 2- 3- 4- 5- 6- 7- 8- 9
A- B- C- D- E- F- G- H- I- J- K- L- M- N- O- P- Q- R- S- T- U- V- W- X- Y- Z
© 1997-2019 Mark Wade - Contact
© / Conditions for Use