UR-200
The UR-200 was an intercontinental ballistic missile (ICBM) developed by Vladimir Chelomey's OKB-52 in the Soviet Union. It was known during the Cold War by the NATO reporting name SS-10 Scrag and internally by the GRAU index 8K81. The design was authorized by the Decisions of the Central Committee of the CPSU of March 16 and August 1, 1961, and the draft project was finished in July 1962.
Also recorded as UR200 · 8K81 · SS-10 Scrag · Scrag Missile
UR-200
Steve Jurvetson · CC BY 2.0
- Name
- UR-200 SS-10 Scrag
- Field
- intercontinental ballistic missile
- Region
- Soviet Union
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Documentary summary
The UR-200 was an intercontinental ballistic missile (ICBM) developed by Vladimir Chelomey's OKB-52 in the Soviet Union. It was known during the Cold War by the NATO reporting name SS-10 Scrag and internally by the GRAU index 8K81. The design was authorized by the Decisions of the Central Committee of the CPSU of March 16 and August 1, 1961, and the draft project was finished in July 1962.
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In this article
Overview
Overview
It first flew on November 4, 1963, from the Baikonur Cosmodrome. The ninth and final flight was conducted on October 20, 1964.
Key facts
Key facts
• Name — UR-200 SS-10 Scrag • Origin — Soviet Union • Type — Intercontinental ballistic missile • Is Missile — yes • Service — 1963-1964 • Designer — OKB-52 • Design Date — 1962 • Spec Label — 8K81 • Weight — 135710 kg • Height — 34.65 m • Diameter — 3 m • Filling — Nuclear warhead • Engine — First stage, RD-0202 liquid-fuel rocket Second stage, RD-0205 liquid-fuel rocket • Engine Power — First stage, 2236 kN Second stage, 606.4 kN • Vehicle Range — 12000 km • Speed — 20 Mach • Guidance — Inertial • Wingspan — 4.2 m • Propellant — / UDMH • Ceiling — 185 km apogee
FOBS
FOBS
The FOBS, or Fractional Orbital Bombardment System, was a Soviet programme to place a nuclear warhead into a 150 km low Earth orbit, in order to allow the warhead to approach the enemy from any direction, below missile tracking radar systems. The UR-200 was one of several rockets proposed for this purpose, along with the 8K713 and R-36. The use of the UR-200 for FOBS deployment was cancelled in October 1964, when Nikita Khrushchev was removed from power.
Operational history
Operational history
The UR-200 was never deployed operationally. The successful development of the storable hypergolic-fuelled R-36 silo-launched missile led to the cancellation of the UR-200 in 1965.
Operators
Operators
*
Description
The UR-200 was a two-stage liquid-propellant universal ICBM for delivery of replaceable payloads to the range up to 12000 km, launch of interceptor satellites for space defense, naval recon satellites, and orbital maneuvering warheads. It was capable of carrying around 3175 kg of payload, and could be launched from flat pads, or missile silos built for the R-16 missile. Unusually for a Soviet missile, the first stage provided attitude control by means of thrust vectoring. Nitrogen tetroxide and UDMH were used as propellants.
Literature
Scholarly footprint
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The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 14 August 2026.
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