Vostok 11A510

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Vostok 11A510

Family: R-7. Country: Russia. Status: Hardware. Library of Congress Designation: A. Department of Defence Designation: SL-5. Article Number: 11A510.

Version of R-7 launch vehicle with Vostok second stage and unknown third stage used only twice to launch prototype RORSATs. These satellites were originally to have been launched on the cancelled UR-200 launcher, and operational satellites used Tsyklon-2 launchers.

Specifications

Launches: 2. Failures: 0. Success Rate: 100.00% pct. First Launch Date: 28 December 1965. Last Launch Date: 20 July 1966. LEO Payload: 4,500 kg. to: 200 km Orbit. at: 65.0 degrees. Liftoff Thrust: 411,731 kgf. Total Mass: 275,000 kg. Core Diameter: 10.3 m. Total Length: 31.0 m.

Stage Number: 0. 4 x Soyuz 11A511-0 Gross Mass: 43,000 kg. Empty Mass: 3,550 kg. Thrust (vac): 101,400 kgf. Isp: 314 sec. Burn time: 118 sec. Isp(sl): 257 sec. Diameter: 2.7 m. Span: 2.7 m. Length: 19.6 m. Propellants: Lox/Kerosene No Engines: 1. RD-107-11D511
Stage Number: 1. 1 x Soyuz 11A511-1 Gross Mass: 100,500 kg. Empty Mass: 6,500 kg. Thrust (vac): 99,700 kgf. Isp: 315 sec. Burn time: 292 sec. Isp(sl): 252 sec. Diameter: 3.0 m. Span: 3.0 m. Length: 27.8 m. Propellants: Lox/Kerosene No Engines: 1. RD-108-11D512
Stage Number: 2. 1 x Vostok 8A92-2 Gross Mass: 7,775 kg. Empty Mass: 1,440 kg. Thrust (vac): 5,600 kgf. Isp: 326 sec. Burn time: 369 sec. Isp(sl): 0 sec. Diameter: 2.6 m. Span: 2.6 m. Length: 2.8 m. Propellants: Lox/Kerosene No Engines: 1. RD-0109
Stage Number: 3. 1 x Tsyklon 2-3 Gross Mass: 3,200 kg. Empty Mass: 400 kg. Thrust (vac): 7,950 kgf. Isp: 317 sec. Burn time: 112 sec. Diameter: 2.0 m. Span: 2.0 m. Length: 2.5 m. Propellants: N2O4/UDMH No Engines: 1. RD-861

Vostok 11A510 Chronology

1965 Dec 28 - - 22:19 GMT. Launch Site: Baikonur . Launch Complex: LC31.

Cosmos 102 Spacecraft: US-A. Mass: 3,800 kg.
Prototype RORSAT hardware using chemical batteries in place of nuclear reactor.

1966 Jul 20 - - 09:07 GMT. Launch Site: Baikonur . Launch Complex: LC31.

Cosmos 125 Spacecraft: US-A. Mass: 3,800 kg.
Prototype RORSAT hardware using chemical batteries in place of nuclear reactor. Lost on the 52nd revolution as a result of a possible failure in the chemical power units placed on board instead of the nuclear BES-5.

Bibliography:

279 - McDowell, Jonathan, Launch Log, October 1998. HTML when accessed: http://hea-www.harvard.edu/~jcm/space/log/launch.html
295 - Taylor, Rufus, The Soviet Space Program, National Intelligence Estimate 11-1-67, dated 2 March 1967, declassified 11 December 1992..

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Last update 12 March 2001.
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