Encyclopedia Astronautica
Signal



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Signal
Credit: USAF Phillips Laboratory
Russian communications satellite. Study 1995. The RKK Energia and Polyot PO teamed up with other industries to propose the Signal constellation of low earth orbit communications satellites.

Up to 48 of these 310-kg spacecraft (12 satellites in each of four orbital planes) were to fly at altitudes of 1,500 km with inclinations of 74 degrees.

Launches would be conducted either by Kosmos-2 boosters with two spacecraft or by Tsyklon-3 boosters with six spacecraft. The long and narrow spacecraft would have a payload capacity of 70 kg and a design lifetime of six years. The design included UHF, L-band, and Ku- band transponders. Like several of its competitors, Signal suffered program delays, and the launch of the first prototype spacecraft slipped until at least 1995. It then slipped from sight.

Gross mass: 310 kg (680 lb).
Payload: 70 kg (154 lb).

More... - Chronology...


Associated Countries
See also
Associated Manufacturers and Agencies
  • Korolev Russian manufacturer of rockets, spacecraft, and rocket engines. Korolev Design Bureau, Kaliningrad, Russia. More...

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