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ECS/OTS
ECS-OTS
ECS-OTS
Credit: ESA
European communications satellite.

AKA: JCSat 2;MARECS;OTS. Status: Operational 1977. First Launch: 1977-09-13. Last Launch: 2001-02-07. Number: 20 . Gross mass: 1,490 kg (3,280 lb).

The OTS/ECS satellites were the first European-developed operational communications satellites, after groundwork laid by two experimental French/German Symphonie satellites in the 1970s.

3-axis controlled, maintained by 2 x 25 Nms and 1 x 16 Nms momentum wheels, and 20 x 0.7 N / 8 N thrusters with 118 kg propellant. 1260 W generated by solar panels, feeding two 24 Ah NiCd batteries. On the Marecs series the spacecraft provided three repeaters: shore-to-ship with 5 MHz bandwidth, ship-to-shore with 6 MHz bandwidth, shore-to-shore with 0.5 MHz bandwidth. These provide 35 two-way voice channels plus search and rescue capabilities.



Family: Communications, Geosynchronous orbit, Technology. Country: Europe. Spacecraft: Skynet. Launch Vehicles: Titan, Thor, Delta, Ariane 1, Delta 3914, Ariane, Ariane 2/3, Delta 2 7000, Ariane 3, Ariane 44LP, Ariane 44L, Commercial Titan 3, Delta 7925, Delta 7925-9.5, Delta 3000. Projects: Eutelsat, MARECS, Telecom. Launch Sites: Cape Canaveral, Cape Canaveral LC17B, Cape Canaveral LC17A, Cape Canaveral LC40, Kourou, Kourou ELA1, Kourou ELA2. Agency: NATO, ESA. Bibliography: 126, 2, 276, 296, 5, 552, 554, 6, 61, 12296, 12297, 12298, 12299.
Photo Gallery

Eutelsat 1Eutelsat 1
Credit: Manufacturer Image


MARECS 1MARECS 1
Credit: Manufacturer Image


NATO 4ANATO 4A
Credit: Manufacturer Image


Skynet 4ASkynet 4A
Credit: Manufacturer Image


Telecom 1ATelecom 1A
Credit: Manufacturer Image


OTS 1OTS 1
Credit: Manufacturer Image



1977 September 13 - . 23:31 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Thor. Launch Vehicle: Delta 3914. FAILURE: Vehicle exploded, probably SRM case.. Failed Stage: 0.
1978 May 11 - . 22:59 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Thor. Launch Vehicle: Delta 3914.
1981 December 20 - . 01:29 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA1. LV Family: Ariane. Launch Vehicle: Ariane 1.
1982 September 9 - . 02:12 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA1. LV Family: Ariane. Launch Vehicle: Ariane 1. FAILURE: Stage 3 turbopump.. Failed Stage: U.
1983 June 16 - . 11:59 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA1. LV Family: Ariane. Launch Vehicle: Ariane 1.
1984 August 4 - . 13:32 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA1. LV Family: Ariane. Launch Vehicle: Ariane 3.
1984 November 10 - . 01:14 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA1. LV Family: Ariane. Launch Vehicle: Ariane 3.
1985 May 8 - . 01:15 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA1. LV Family: Ariane. Launch Vehicle: Ariane 3.
1985 September 12 - . 23:26 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA1. LV Family: Ariane. Launch Vehicle: Ariane 3. FAILURE: Geosynchronous orbit injection failure. Third stage igniter cartridge failure was determined to be the most likely cause.. Failed Stage: U.
1987 September 16 - . 00:45 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA1. LV Family: Ariane. Launch Vehicle: Ariane 3.
1988 July 21 - . 23:12 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA1. LV Family: Ariane. Launch Vehicle: Ariane 3.
1988 December 11 - . 00:33 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44LP.
1990 January 1 - . 00:07 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC40. LV Family: Titan. Launch Vehicle: Commercial Titan 3.
1990 August 30 - . 22:46 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44LP.
1991 January 8 - . 00:53 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 7925.
1993 December 8 - . 00:48 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17A. LV Family: Thor. Launch Vehicle: Delta 7925.
1998 January 10 - . 00:32 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC17B. LV Family: Thor. Launch Vehicle: Delta 7925-9.5.
1999 February 26 - . 22:44 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44L.
2001 February 7 - . 23:05 GMT - . Launch Site: Kourou. Launch Complex: Kourou ELA2. LV Family: Ariane. Launch Vehicle: Ariane 44L.

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