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Fltsatcom
Fltsatcom -

Credit: USAF. 18,489 bytes. 325 x 304 pixels.



Other Designations: Fleet Satellite Communications. Class: Communications. Type: Military. Nation: United States. Agency: USAF, Naval Space and Warfare Systems Command. Manufacturer: TRW.

The FLTSATCOM system provides world-wide, high-priority UHF communications between naval aircraft, ships, submarines, and ground stations and between the Strategic Air Command and the national command authority network. Fully operational in January 1981, the FLTSATCOM constellation is being replaced by the UFO (UHF Follow-on) spacecraft. Spacecraft: 3-Axis stabilised. Two solar arrays (13.2 m across) generate >1400 W. Three hexagonal modules with aluminum structure. Hydrazine propulsion system for stationkeeping (120 kg fuel). Payload: Twelve transponders with UHF/SHF uplink and UHF downlink. Large 4.9 meter diameter UHF receive antenna of silver-filled mesh. Offset mast UHF transmit antenna. Flights 6 and 7 carried experimental EHF transponder (20 W) to evaluate new ground terminals.


Specification

Design Life: 7 years. Total Length: 1.3 m. Maximum Diameter: 2.5 m. Total Mass: 2,032 kg.


FLTSATCOM Chronology


09 February 1978 Fltsatcom 1 Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 1,884 kg. Perigee: 35,780 km. Apogee: 35,793 km. Inclination: 11.3 deg.

Fleet Satellite Communications. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


04 May 1979 Fltsatcom 2 Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 1,884 kg. Perigee: 36,223 km. Apogee: 36,335 km. Inclination: 9.9 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


18 January 1980 Fltsatcom 3 Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 1,884 kg. Perigee: 35,669 km. Apogee: 35,851 km. Inclination: 9.1 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


31 October 1980 Fltsatcom 4 Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 1,800 kg. Perigee: 35,769 km. Apogee: 35,803 km. Inclination: 9.2 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


01 January 1981 FLTSATCOM constellation declared operational

The FLTSATCOM system provided world-wide, high-priority UHF communications between naval aircraft, ships, submarines, and ground stations and between the Strategic Air Command and the national command authority network.


06 August 1981 Fltsatcom 5 Launch Site: Cape Canaveral . Launch Vehicle: Atlas Centaur SLV-3D. Mass: 1,884 kg. Perigee: 36,221 km. Apogee: 36,300 km. Inclination: 8.9 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


05 December 1986 USA 20 Launch Site: Cape Canaveral . Launch Vehicle: Atlas G. Mass: 2,310 kg. Perigee: 35,740 km. Apogee: 35,832 km. Inclination: 0.9 deg.

Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit


26 March 1987 Fltsatcom 6 Launch Site: Cape Canaveral . Launch Vehicle: Atlas G. FAILURE: Lightning strike zapped guidance at T+51 seconds. Fault was directly attributed to a random memory upset that forced rocket to veer off course. Destroyed by range safety. Mass: 2,300 kg.
25 September 1989 USA 46 Launch Site: Cape Canaveral . Launch Vehicle: Atlas G. Mass: 2,310 kg. Perigee: 35,768 km. Apogee: 35,810 km. Inclination: 2.6 deg.

Last in series of 8. Spacecraft engaged in practical applications and uses of space technology such as weather or communication (US Cat C). Launch vehicle put payload into geosynchronous transfer orbit



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Last update 12 March 2001.
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© Mark Wade, 2001 .