The UR-100 (russian: УР-100) was an intercontinental ballistic missile (ICBM) developed and deployed by the

Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, ...

from 1966 to 1996. UR () in its designation stood for

Universal Rocket The Universal Rocket or ''UR'' family of missiles and carrier rockets is a Russian, previously Soviet rocket family. Intended to allow the same technology to be used in all Soviet rockets, the UR is produced by the Khrunichev State Research and P ...

(russian: links=no, Универсальная Ракета). It was known during the Cold War by the NATO reporting name SS-11 Sego and internally by the GRAU index 8K84. The Strela and

Rokot Rokot (russian: Рокот meaning ''Rumble'' or ''Boom''), also transliterated Rockot, was a Russian space launch vehicle that was capable of launching a payload of into a Earth orbit with 63° inclination. It was based on the UR-100N (SS- ...

carrier rockets are based on it. The similar designation ''UR-100MR'' (russian: links=no, УР-100МР) actually refers to an entirely different missile, the MR-UR-100 Sotka (SS-17 Spanker).

Description

The UR-100 was a two-stage liquid-propellant lightweight ICBM. Initial versions carried a single warhead of 0.5 to 1.1 Mt yield, while later versions could carry three or six

MIRV A multiple independently targetable reentry vehicle (MIRV) is an exoatmospheric ballistic missile payload containing several warheads, each capable of being aimed to hit a different target. The concept is almost invariably associated with i ...

warheads. The missile was silo-launched. 15P784 silo design (by KBOM, ''Design Bureau of Common Machinery'', of V.P.Barmin) was greatly simplified in comparison to earlier missiles. Facilities consisted of hardened, un-manned silos controlled by a single central command post. This was the first soviet ICBM (8K84M, entered service on 3 October 1971) equipped with missile defense countermeasure "Palma" by NII-108 of V.Gerasimenko.

Variants and developments

* UR-100 with 8K84 missile — original development * UR-100 with 8K84M missile — improved variant *

UR-100N The UR-100N, also known as RS-18A is an intercontinental ballistic missile in service with Soviet and Russian Strategic Missile Troops. The missile was given the NATO reporting name SS-19 Stiletto and carries the industry designation 15A30. Deve ...

with 15A30 missile — enlarged UR-100. This variant is the basis of the

space launch system. * UR-100N UTTH with 15A35 missile — improved UR-100N (The "UTTH" (or "UTTKh") abbreviated suffix is often used in missile names. This means literally "improved tactical and technical characteristics",

Russian Russian(s) refers to anything related to Russia, including: *Russians (, ''russkiye''), an ethnic group of the East Slavic peoples, primarily living in Russia and neighboring countries *Rossiyane (), Russian language term for all citizens and peo ...

: УТТХ = улучшенные тактико-технические характеристики) *

UR-100MR The MR-UR-100 Sotka was a MIRV-warhead intercontinental ballistic missile (ICBM) developed and deployed by the Soviet Union from 1978 to 1993. The missile was given the NATO reporting name SS-17 Spanker and was built under the Soviet industry des ...

15P015 with 15A15 missile — a different missile to replace the original UR-100 SS-11 ballistic missile in container on trailer

Operational history

; : The UR-100 reached initial operational capability with the

Strategic Rocket Forces The Strategic Rocket Forces of the Russian Federation or the Strategic Missile Forces of the Russian Federation (RVSN RF; russian: Ракетные войска стратегического назначения Российской Фед� ...

in 1966, and by 1972, 990 launchers had been deployed. An additional 420 launchers of newer version missiles were added by 1976. The missile was deployed as a counterpart to the United States'

LGM-30 Minuteman The LGM-30 Minuteman is an American land-based intercontinental ballistic missile (ICBM) in service with the Air Force Global Strike Command. , the LGM-30G Minuteman III version is the only land-based ICBM in service in the United States and ...

, and relied on numbers for effectiveness. Original versions were phased out during the 1970s, but 326 of the newer missiles (8K84M, UR-100N, UR-100NUTTH) remained in service by 1991. These were phased out completely by 1996.

was the only operator of the UR-100. Formations included: * 4th Rocket Division (Drovyanaya, Chita Oblast) (

53rd Rocket Army The 53rd Rocket Army (Military Unit Number 74102) was an army of the Soviet, later Russian Strategic Rocket Forces. It was created on June 8, 1970 from the 8th Independent Missile Corps (established 1962), under Colonel-General Yury Zabegaylov. Its ...

)

As a space launcher

The Strela and

carrier rockets are based on the UR-100.

External links

8K84
Cold War intercontinental ballistic missiles of the Soviet Union Universal Rocket (rocket family) Intercontinental ballistic missiles of the Soviet Union NPO Mashinostroyeniya products Military equipment introduced in the 1960s 1966 establishments {{Russia-mil-stub

Description

Variants and developments

Operational history

As a space launcher

See also

External links