Encyclopedia Astronautica
TDF


French direct broadcasting communications satellite network

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Associated Countries
Associated Spacecraft
  • Spacebus 300 French communications satellite. 5 launches, 1987.11.21 (TVSAT 1) to 1990.07.24 (TDF 2). 3-axis stabilized using bipropellant thrusters (1220 kg propellant - unified with apogee insertion and maneuvering propulsion) and momentum wheels. More...

Associated Launch Vehicles
  • Ariane 2 French orbital launch vehicle. Basic three stage vehicle without solid rocket motor strap-ons. Payload to geosynchronous transfer orbit was 2,175 kg. More...
  • Ariane 44L French orbital launch vehicle. Ariane 4 with 4 liquid rocket strap-ons. More...

Associated Manufacturers and Agencies
Associated Launch Sites
  • 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...

TDF Chronology


1988 October 28 - . 02:17 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA1. LV Family: Ariane. Launch Vehicle: Ariane 2. LV Configuration: Ariane 2 V26.
  • TDF-1 - . Payload: TDF 1. Mass: 2,136 kg (4,709 lb). Nation: France. Agency: France Telecom. Program: TDF. Class: Communications. Type: Civilian communications satellite. Spacecraft: Spacebus 300. Completed Operations Date: 1996-10-04 . USAF Sat Cat: 19621 . COSPAR: 1988-098A. Apogee: 36,129 km (22,449 mi). Perigee: 36,051 km (22,401 mi). Inclination: 4.8000 deg. Period: 1,451.60 min. French DBS; 19 deg W. Direct broadcasting satellite. French registration: TDF-1, 1988-5-B. Positioned in geosynchronous orbit at 19 deg W in 1988-1996 As of 1 September 2001 located at 139.53 deg W drifting at 3.885 deg W per day. As of 2007 Mar 5 located at 16.35W drifting at 3.870W 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.
  • TDF 2 - . Mass: 2,096 kg (4,620 lb). Nation: France. Agency: France Telecom. Program: TDF. Class: Communications. Type: Civilian communications satellite. Spacecraft: Spacebus 300. Completed Operations Date: 1999-05-26 . USAF Sat Cat: 20705 . COSPAR: 1990-063A. Apogee: 36,435 km (22,639 mi). Perigee: 36,085 km (22,422 mi). Inclination: 3.1000 deg. Period: 1,460.40 min. French DBS; 19 deg W. Direct broadcasting satellite. Registration 1990-2-B. Positioned in geosynchronous orbit at 19 deg W in 1990-1997; 36 deg E in 1997-1999 As of 5 September 2001 located at 62.59 deg E drifting at 6.006 deg W per day. As of 2007 Mar 9 located at 98.15W drifting at 5.991W degrees per day.

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