UR-100

UR-100

Infobox Weapon
is_missile=yes
name = Strategic missile complex UR-100 with 8K84 missile


type = ICBM
vehicle_range = 10,600 km
filling = 1
yield = 1 Mt by NII-1011, Chelyabinsk-70
engine = two-stage liquid fuel
#first stage 8S816 with four 15D2 (RD-0217) engines
#second stage 8S817 with one 15D13 main and one four-nozzle 15D14 (RK-3) engines)
guidance = inertial
cep = 1000..1400 metres
speed =
length = 16.93 metres
diameter = 2 m
weight = 41.4..42.3 tonnes
payload_capacity =
manufacturer = design by OKB-52 of V.N.Chelomey, production by Khrunichev Machine-Building Plant, Omsk aviation facility №166 "Polyot", Orenburg aviation facility №47 "Strela"
unit_cost =
service = 21 July 1967 (document №705-235)–1974
used_by = Soviet Union
The UR-100 ( _ru. УР-100) was an intercontinental ballistic missile (ICBM) developed and deployed by the Soviet Union from 1966 to 1996. УР in its designation stands for "универсальная ракета" ("universal rocket"). It was known during the Cold War by the NATO reporting name SS-11 Sego and internally by the GRAU index 8K84.

The similar designation UR-100MR 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 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 with 15A30 missile — enlarged UR-100
*UR-100NUTTH with 15A35 missile — improved UR-100N (The "UTTH" (or "UTTKh") abbreviated suffix is often used in missile names. This means literally "improved tactics and technical charactereistics", Russian: УТТХ = улучшенные тактико-технические характеристики)
*UR-100MR 15P015 with 15A15 missile — just different missile to replace original UR-100

Operational history

; USSR: The UR-100 reached initial operational capability with the Strategic Rocket Forces 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, 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. Strategic Rocket Forces was the only operator of the UR-100.

See also

* List of missiles
* List of rockets

External links

* [http://www.new-factoria.ru/missile/wobb/8k84/8k84.shtml 8K84] ru icon

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