Encyclopedia Astronautica
DFS


Multipurpose communications.

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Associated Countries
Associated Spacecraft
  • Spacebus 100 French communications satellite. 12 launches, 1975.08.26 (Symphonie 2) to 1994.01.24 (Eutelsat II F5). 3-axis stabilized using bipropellant thrusters (750 kg propellant - unified with apogee insertion and maneuvering propulsion) and momentum wheels. More...

Associated Launch Vehicles
  • Ariane 44L French orbital launch vehicle. Ariane 4 with 4 liquid rocket strap-ons. More...
  • Delta 7925 American orbital launch vehicle. Four stage vehicle consisting of 9 x GEM-40 + 1 x EELT Thor/RS-27A + 1 x Delta K + 1 x Star 48B More...

Associated Manufacturers and Agencies
Associated Launch Sites
  • Cape Canaveral America's largest launch center, used for all manned launches. Today only six of the 40 launch complexes built here remain in use. Located at or near Cape Canaveral are the Kennedy Space Center on Merritt Island, used by NASA for Saturn V and Space Shuttle launches; Patrick AFB on Cape Canaveral itself, operated the US Department of Defense and handling most other launches; the commercial Spaceport Florida; the air-launched launch vehicle and missile Drop Zone off Mayport, Florida, located at 29.00 N 79.00 W, and an offshore submarine-launched ballistic missile launch area. All of these take advantage of the extensive down-range tracking facilities that once extended from the Cape, through the Caribbean, South Atlantic, and to South Africa and the Indian Ocean. More...
  • Kourou After the agreement with newly independent Algeria for France to evacuate their launch sites in that country, a location near Biscarosse was selected for French missile testing. However since only launches westwards across the Bay of Biscay could be made from this site, it was unsuitable for France's Diamant orbital launch vehicle. After reviewing 14 potential sites, a location in the South American French colony of Guiana was selected. This would allow over-water launches to a tremendous range of possible orbital inclinations -- from -100.5 deg to 1.5 deg. Being near the equator, it would provide the maximum assist from the earth's rotation for launches into equatorial orbits. The decision was formalized in April 1964 and in July 1966 ELDO chose the site for future launches of the Europa II launch vehicle. More...

DFS Chronology


1989 June 5 - . 22:37 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44L. LV Configuration: Ariane 44L V31.
  • DFS 1 - . Payload: Kopernikus 1. Mass: 1,416 kg (3,121 lb). Nation: Germany. Agency: Bundespost. Program: DFS. Class: Communications. Type: Civilian communications satellite. Spacecraft: Spacebus 100. Completed Operations Date: 1996-01-01 . USAF Sat Cat: 20041 . COSPAR: 1989-041B. Apogee: 35,889 km (22,300 mi). Perigee: 35,683 km (22,172 mi). Inclination: 0.0000 deg. Period: 1,436.10 min. Multipurpose communications; 23.5 deg E. Communications satellite, position 23.5E, Ariane 4 flight no 20. Positioned in geosynchronous orbit at 23 deg E in 1989-1993; 33 deg E in 1993-1995 As of 5 September 2001 located at 90.12 deg E drifting at 1.435 deg E per day. As of 2007 Mar 10 located at 41.93E drifting at 1.416E degrees per day.

1990 July 24 - . 22:25 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44L. LV Configuration: Ariane 44L V37.
  • DFS 2 - . Payload: Kopernikus 2. Mass: 1,418 kg (3,126 lb). Nation: Germany. Agency: Bundespost. Program: DFS. Class: Communications. Type: Civilian communications satellite. Spacecraft: Spacebus 100. USAF Sat Cat: 20706 . COSPAR: 1990-063B. Apogee: 36,014 km (22,378 mi). Perigee: 35,965 km (22,347 mi). Inclination: 1.4000 deg. Period: 1,446.50 min. West German DBS; 28.5 deg E. Communications satellite, position 28.5E Ariane 4 flight no 37. Positioned in geosynchronous orbit at 28 deg E in 1990-1999 As of 30 August 2001 located at 32.30 deg E drifting at 0.451 deg W per day. As of 2007 Mar 11 located at 128.29W drifting at 2.623W degrees per day.

1992 October 12 - . 09:47 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Delta. Launch Vehicle: Delta 7925. LV Configuration: Delta 7925 D215.
  • DFS 3 - . Payload: Kopernikus 3. Mass: 1,400 kg (3,000 lb). Nation: Germany. Agency: Bundespost. Program: DFS. Class: Communications. Type: Civilian communications satellite. Spacecraft: Spacebus 100. USAF Sat Cat: 22175 . COSPAR: 1992-066A. Apogee: 35,799 km (22,244 mi). Perigee: 35,773 km (22,228 mi). Inclination: 0.5000 deg. Period: 1,436.10 min. Stationed at 33.5 deg E. Communication satellite. Longitude 33.5 deg E. Delta II flight no 212. Positioned in geosynchronous orbit at 31 deg E in 1992; 23 deg E in 1993-1999 As of 1 September 2001 located at 23.45 deg E drifting at 0.001 deg E per day. As of 2007 Mar 9 located at 29.79E drifting at 1.955W degrees per day.

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