Encyclopedia Astronautica
R-21



r21.jpg
R-21
Credit: © Mark Wade
Russian submarine-launched ballistic missile. First flight 1962. NATO code Serb may apply to SS-N-6 instead. First subsurface launched SLBM (development began at OKB- 586 and transferred to SKB-385).

Launch data is: incomplete. Standard warhead: 910 kg (2,000 lb). Maximum range: 1,400 km (800 mi). Number Standard Warheads: 1. Warhead yield: 800 KT. CEP: 3.23 km (2.00 mi). Boost Propulsion: Storable liquid rocket. Initial Operational Capability: 1963.

AKA: SS-N-5; 4K55; K-1; Serb; D-4.
Status: Retired 1989.
Gross mass: 17,700 kg (39,000 lb).
Payload: 910 kg (2,000 lb).
Height: 12.90 m (42.30 ft).
Diameter: 1.42 m (4.65 ft).
Span: 1.42 m (4.65 ft).
Apogee: 300 km (180 mi).
First Launch: 1960.05.01.
Last Launch: 1967.01.01.
Number: 6 .

More... - Chronology...


Associated Countries
Associated Engines
  • S5.3 Isayev Nitric acid/Amine rocket engine. 392 kN. R-21 (SS-N-5). Out of Production. First engine to start underwater. 392 kN sea-level. More...

See also
  • R-21 First flight 1962. NATO code Serb may apply to SS-N-6 instead. First subsurface launched SLBM (development began at OKB- 586 and transferred to SKB-385). More...
  • missile Guided self-propelled military weapon (as opposed to rocket, an unguided self-propelled weapon). More...

Associated Manufacturers and Agencies
  • Makeyev Russian manufacturer of rockets, spacecraft, and rocket engines. Makeyev Design Bureau, Kolomna, Russia. More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.

Associated Launch Sites
  • Sea-launched Sounding rocket launched from a naval vessel at an undocumented location. 2001 launches from 1956 to 2008, reaching up to 35,820 kilometers altitude, fall into this category. More...

Associated Stages
  • R-21-1 N2O4/UDMH propellant rocket stage. Loaded mass 16,600 kg. More...

R-21 Chronology


1960 May 1 - . Launch Site: Black Sea Launch Area. Launch Pad: 45.0 N x 35.0 E. LV Family: R-21. Launch Vehicle: R-21. LV Configuration: R-21 K-1.1.
  • Test mission - . Nation: USSR. Agency: RVSN. Apogee: 1.00 km (0.60 mi).

1961 - . Launch Site: Black Sea Launch Area. Launch Pad: 45.0 N x 35.0 E. Launch Platform: S-229. LV Family: R-21. Launch Vehicle: R-21. LV Configuration: R-21 K-1.1.
  • Test mission - . Nation: USSR. Agency: RVSN. Apogee: 1.00 km (0.60 mi).

1961 October 1 - . Launch Site: Black Sea Launch Area. Launch Pad: 45.0 N x 35.0 E. Launch Platform: S-229. LV Family: R-21. Launch Vehicle: R-21. LV Configuration: R-21 K-1.1.
  • Test mission - . Nation: USSR. Agency: RVSN. Apogee: 1.00 km (0.60 mi).

1962 February 24 - . Launch Site: Sea-launched. Launch Pad: UNKPL. Launch Platform: HOTEL2. LV Family: R-21. Launch Vehicle: R-21.
  • Test mission - . Nation: USSR. Agency: RVSN. Apogee: 293 km (182 mi).

1963 - . Launch Site: Sea-launched. Launch Pad: UNKPL. Launch Platform: HOTEL2. LV Family: R-21. Launch Vehicle: R-21.
  • Test mission - . Nation: USSR. Agency: RVSN. Apogee: 293 km (182 mi).

1967 - . Launch Site: Sea-launched. Launch Pad: UNKPL. Launch Platform: GOLF2. LV Family: R-21. Launch Vehicle: R-21.
  • Test mission - . Nation: USSR. Agency: RVSN. Apogee: 293 km (182 mi).

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