Encyclopedia Astronautica
UR-100M


Russian intercontinental ballistic missile. The 8K84M was an improved version of the UR-100 with an improved empty mass fraction, a new guidance system, countermeasures capability, and post-boost manoeuvrability to defeat enemy anti-ballistic missile systems.

Development was authorised on 9 December 1965. Twelve trial flights were conducted between 23 July 1969 and 15 March 1971. The system was formally accepted by the military on 3 October 1972. The first regiment became operational at Khmelnitskiy on 1 March 1970.

Tests were made with a radar system to provide improved accuracy with a one megaton warhead at 9200 km range, but this was not adopted for service. Although this missile is often referred to as the UR-100M, this designation was applied within the design bureau to a naval version of the UR-100 developed by Chelomei in 1962-1964, but not selected for full development or production.

Standard warhead: 1,050 kg (2,310 lb). Maximum range: 13,000 km (8,000 mi). Number Standard Warheads: 1. Warhead yield: 1,200 KT. CEP: 1.10 km (0.60 mi). Boost Propulsion: Storable liquid rocket, N2O4/UDMH. Cruise engine: 8D423. Initial Operational Capability: 1970. Total Number Built: 590.

AKA: RS-10; SS-11 Mod.2; 8K84M; UR-100M; 8K84UTTKh; Sego; 15P084.
Gross mass: 50,100 kg (110,400 lb).
Payload: 1,050 kg (2,310 lb).
Height: 18.90 m (62.00 ft).
Diameter: 2.00 m (6.50 ft).
Span: 2.00 m (6.50 ft).
Thrust: 876.00 kN (196,932 lbf).
Apogee: 1,000 km (600 mi).
First Launch: 1970.01.01.
Last Launch: 1984.01.01.
Number: 18 .

More... - Chronology...


Associated Countries
Associated Engines
  • RD-0216 Kosberg N2O4/UDMH rocket engine. 219 kN. UR-100 stage 1. Isp=313s. Staged combustion cycle. Includes tank pressurization system (RD-0217 without tank press.). First launch November 1963, manufactured until 1974, operational until 1991. First flight 1965. More...

See also
  • UR-100 The UR-100 lightweight ICBM was the Soviet answer to the US Minuteman and was deployed in larger numbers than any other in history. It remained an enigma outside of intelligence circles in the West until after the collapse of the Soviet Union. It allowed the Soviet Union to match, and then surpass the United States in strategic deterrent capability. As such it was Vladimir Chelomei's crowning legacy to his country. More...
  • missile Guided self-propelled military weapon (as opposed to rocket, an unguided self-propelled weapon). More...

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

Associated Launch Sites
  • Baikonur Russia's largest cosmodrome, the only one used for manned launches and with facilities for the larger Proton, N1, and Energia launch vehicles. The spaceport ended up on foreign soil after the break-up of Soviet Union. The official designations NIIP-5 and GIK-5 are used in official Soviet histories. It was also universally referred to as Tyuratam by both Soviet military staff and engineers, and the US intelligence agencies. Since the dissolution of the Soviet Union the Russian Federation has insisted on continued use of the old Soviet 'public' name of Baikonur. In its Kazakh (Kazak) version this is rendered Baykonur. More...

Associated Stages
  • 8S816 N2O4/UDMH propellant rocket stage. Loaded/empty mass 32,799/3,000 kg. Thrust 868.80 kN. Vacuum specific impulse 310 seconds. Orevo has sectioned hardware. Total mass, sea level thrust accurate; Isp, empty mass and burn time estimated. Source: Placard, Orevo. More...
  • 8S817 N2O4/UDMH propellant rocket stage. Loaded/empty mass 8,611/900 kg. Thrust 131.45 kN. Vacuum specific impulse 325 seconds. Orevo has sectioned hardware. Total mass, thrust accurate; Isp, empty mass and burn time estimated. Source: Placard, Orevo. More...

UR-100M Chronology


1970 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1970 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1970 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1970 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1970 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1970 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1970 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1970 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1970 July 27 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1970 July 28 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1970 August 1 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1970 August 1 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1971 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • State trials missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1971 February 2 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • First State trials launch - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1971 February 12 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • State trials missile test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1984 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1984 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

1984 - . Launch Site: Baikonur. LV Family: UR-100. Launch Vehicle: UR-100M.
  • Operational test - . Nation: USSR. Agency: RVSN. Apogee: 1,000 km (600 mi).

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