Sputnik LV Credit - © Mark Wade

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.

Manufacturer: Korolev. Launches: 2. Success Rate: 100.00%. First Launch Date: 1965-12-27. Last Launch Date: 1966-07-20. Launch data is: complete. LEO Payload: 4,500 kg (9,900 lb). to: 200 km Orbit. at: 65.00 degrees. Apogee: 250 km (150 mi). Associated Spacecraft: US-A. Liftoff Thrust: 4,037.700 kN (907,711 lbf). Total Mass: 275,000 kg (606,000 lb). Core Diameter: 10.30 m (33.70 ft). Total Length: 31.00 m (101.00 ft).

• Stage Number: 0. 4 x Stage: Soyuz 11A511-0. Gross Mass: 43,000 kg (94,000 lb). Empty Mass: 3,550 kg (7,820 lb). Thrust (vac): 994.300 kN (223,528 lbf). Isp: 314 sec. Burn time: 118 sec. Isp(sl): 257 sec. Diameter: 2.68 m (8.79 ft). Span: 2.68 m (8.79 ft). Length: 19.60 m (64.30 ft). Propellants: Lox/Kerosene. No Engines: 1. Engine: RD-107-11D511. Other designations: 11S59 Blocks A,B,V,G. Status: Out of production.

• Stage Number: 1. 1 x Stage: Soyuz 11A511-1. Gross Mass: 100,500 kg (221,500 lb). Empty Mass: 6,500 kg (14,300 lb). Thrust (vac): 977.700 kN (219,796 lbf). Isp: 315 sec. Burn time: 292 sec. Isp(sl): 252 sec. Diameter: 2.95 m (9.67 ft). Span: 2.95 m (9.67 ft). Length: 27.80 m (91.20 ft). Propellants: Lox/Kerosene. No Engines: 1. Engine: RD-108-11D512. Other designations: 11S59 Block D. Status: Out of production.

• Stage Number: 2. 1 x Stage: Vostok 8A92-2. Gross Mass: 7,775 kg (17,140 lb). Empty Mass: 1,440 kg (3,170 lb). Thrust (vac): 54.900 kN (12,342 lbf). Isp: 326 sec. Burn time: 369 sec. Isp(sl): 0 sec. Diameter: 2.56 m (8.39 ft). Span: 2.56 m (8.39 ft). Length: 2.84 m (9.31 ft). Propellants: Lox/Kerosene. No Engines: 1. Engine: RD-0109. Status: Out of production.

• Stage Number: 3. 1 x Stage: Tsyklon 2-3. Gross Mass: 3,200 kg (7,000 lb). Empty Mass: 400 kg (880 lb). Thrust (vac): 77.960 kN (17,526 lbf). Isp: 317 sec. Burn time: 112 sec. Diameter: 2.00 m (6.50 ft). Span: 2.00 m (6.50 ft). Length: 2.50 m (8.20 ft). Propellants: N2O4/UDMH. No Engines: 1. Engine: RD-861. Status: In production. Integral portion of payload.

1965 December 27 - 22:19 GMT - Launch Site: Baikonur. Launch Complex: LC31. Launch Pad: LC31. Launch Vehicle: Vostok 11A510. Model: Soyuz 11A510. LV Configuration: Soyuz 11A510 G15000-01.

• Cosmos 102 Nation: USSR. Program: RORSAT. Mass: 3,800 kg (8,300 lb). Class: Surveillance. Type: Naval Radarsat. Spacecraft: US-A. Agency: MOM. Perigee: 205 km (127 mi). Apogee: 267 km (165 mi). Inclination: 64.90 deg. Period: 89.20 min. COSPAR: 1965-111A. USAF Sat Cat: 1867. Decay Date: 1966-01-13. Prototype RORSAT hardware using chemical batteries in place of nuclear reactor. References: 1, 2, 6, 290.

• Cosmos 125 Nation: USSR. Program: RORSAT. Mass: 3,800 kg (8,300 lb). Class: Surveillance. Type: Naval Radarsat. Spacecraft: US-A. Agency: MOM. Perigee: 204 km (126 mi). Apogee: 260 km (160 mi). Inclination: 64.90 deg. Period: 89.10 min. COSPAR: 1966-067A. USAF Sat Cat: 2351. Decay Date: 1966-08-02. 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. References: 1, 2, 6, 290.

• McDowell, Jonathan, Jonathan's Space Home Page, Harvard University, 1997-present. Jonathan McDowell's complete on-line listing of all objects orbited and over 20,000 rocket launches Accessed at: http://www.planet4589.org/jsr.html.

• McDowell, Jonathan, Launch Log, October 1998. Jonathan McDowell's complete on-line listing of all objects orbited since Sputnik. Accessed at: http://hea-www.harvard.edu/~jcm/space/log/launch.html.

• Taylor, Rufus, The Soviet Space Program, National Intelligence Estimate 11-1-67, dated 2 March 1967, declassified 11 December 1992..