MR-UR-100 Sotka

Strategic missile complex 15P015 (MR-UR-100) with 15A15 missile

Type	ICBM
Service history
In service	1975–1995
Used by	Soviet Union, Russian Federation
Production history
Manufacturer	design by OKB-586
Specifications
Weight	71.2 tonnes
Length	22.51 metres
Diameter	2.25 m
Warhead	1 or 4
Blast yield	1×3.4Mt or 4×0.4 Mt

Engine	two-stage liquid fuel + one solid fuel 1st: one RD-268 main and one four-nozzle 15D167 engine 2nd: one RD-862 (15D169) engine 3rd: one 15D171 solid fuel engine
Operational range	from 1000 km to 10250 km with MIRV 10320 km with single warhead
Guidance system	inertial

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 designation 15A15. An alternative designation for the missile is the UR-100MR.

Development

OKB-586 developed the MR-UR-100 project. The purpose was to develop a MIRV capable replacement for the existing UR-100 missiles in service. While designed to fit into existing UR-100 silos, it still required some modification of existing silos to accommodate the new missile, due to its requirement for a cold launch system.

The development of "modernized UR-100" was authorized on 19 August 1970 (document №682-218) and assigned to both OKB-586 and TsKBM (builder of UR-100). The design bureau conducted flight tests from 1971 through 1974. Deployment commenced in December 1978. The more advanced MR-UR-100UTTh version began development in 1979, with flight tests from 1977 through 1979. The new missiles had completely replaced the original version by 1983, at which time the Soviets fielded 270 launchers. From there the number of launchers declined, and by the 1991 START I Treaty they were down to 76. All were scheduled for dismantling and removed from the inventory.

In fiction

In the historical fiction novel The Third World War, written by General Sir John Hackett, a warhead from a MR-UR-100 detonates 3500m above Birmingham, England at 1030 hours GMT on 20 August 1985. The explosion kills 300,000 within minutes, with a further 250,000 likely to die in the aftermath.^[1]

Operator

Soviet Union: The Strategic Rocket Forces were the only operators of the Sotka.

References

↑ The Third World War, General Sir John Hackett, Sphere Books, 1978, p371

External links

15A15 (in Russian)

Universal Rocket family

Variants

Main series	UR-100 UR-200 UR-500 UR-700 UR-900
UR-100 family	UR-100 UR-100N Rokot Strela
UR-500 family	UR-500 Proton Proton-K Proton-M Proton Medium Proton Light

Launch sites

Baikonur	Site 81 Site 175 Site 200
Plesetsk	Site 133

Launches

List of Proton launches

See also: MR-UR-100

Russian and former Soviet military designation sequences for radar, missile and rocket systems

Radar
systems

Land-based	A-100 P-3 P-8 P-10 P-12 P-14 P-15 P-18 P-19 P-20 P-30 P-35 P-37 P-40 P-70 P-80 P-100 Kabina 66 Kasta 2E RSN-225 Azov SNR-75 1S91 30N6 36D6 64N6 76N6 96L6E 9S15 9S19 9S32 Duga Dnestr Dnepr Daryal Dunay Volga Don-2N Voronezh Container
Ship-borne
Airborne	N001 N002 N005 N006 N007 N008 N010 N011 N012 N014 N019 N025 N035 N036

Missiles

ICBM	GR-1 R-7 R-9 R-16 R-26 R-36 R-36M R-46 RS-24 RS-26 RT-2 RT-2PM RT-2PM2 RT-20 RT-21 RT-23 RS-28 UR-100 UR-100MR UR-100N UR-200
IRBM	R-14 RSD-10
MRBM	R-5 R-12 RT-15 RT-25
SRBM	2K1 2K6 9K52 9K720 R-1 R-2 R-11 R-11A R-17 OTR-21 OTR-23 TR-1
SLBM	R-13 R-15 R-21 R-27 R-29 R-39 RSM-45 RSM-56
Surface-to-surface (cruise)	Burya RSS-40
Surface-to-surface (naval)	P-1 P-5 P-15 P-70 P-120 P-270 P-500 P-700 P-750 P-800 P-900 P-900A P-1000 RKV-500A RPK-2 RPK-6 RPK-7 URPK-3 URPK-4 URPK-5
Air-to-surface	KSR-2 KSR-5 KS-1 K-10S KH-11 Kh-15 Kh-20 Kh-22 Kh-23 Kh-25 Kh-26 Kh-28 Kh-29 Kh-31 Kh-35 Kh-38 Kh-41 Kh-55 Kh-58 Kh-59 Kh-80 Kh-90 9M114V
Air-to-air	K-5 R-3 R-4 R-8 R-23 R-27 R-33 R-37 R-38 R-40 R-60 R-73 R-77 R-172
Anti-tank	3M6 9K111 9K112 9K114 9K115 9K115-2 9K121 9M14 9M15 9M17 9M113 9M117 9M119 9M120 9M123 9M133 Kornet-D Hermes

Unguided
rockets

Air-launched	RP-1 RP-5 RP-6 RP-9 RP-15 RP-21 RS-82 RS-132
Surface-launched	BM-14 BM-21 BM-24 BM-25 BM-27 BM-30 TOS-1

Engines

NATO designation for Russian and former Soviet Union missiles

Air-to-air missiles
(complete list)

Air-to-surface missiles
(complete list)

Anti-tank missiles
(complete list)

Surface-to-air missiles
(complete list)

Ground based	SA-1 Guild SA-2 Guideline SA-3 Goa SA-4 Ganef SA-5 Gammon SA-6 Gainful SA-7 Grail SA-8 Gecko SA-9 Gaskin SA-10 Grumble SA-11 Gadfly SA-12 Gladiator/Giant SA-13 Gopher SA-14 Gremlin SA-15 Gauntlet SA-16 Gimlet SA-17 Grizzly SA-18 Grouse SA-19 Grison SA-20 Gargoyle SA-21 Growler SA-22 Greyhound SA-23 Gladiator/Giant SA-24 Grinch SA-25 Morfey S-350E
Naval based	SA-N-1 Goa SA-N-2 Guideline SA-N-3 Goblet SA-N-4 Gecko SA-N-5 Grail SA-N-6 Grumble SA-N-7 Gadfly SA-N-8 Gremlin SA-N-9 Gauntlet SA-N-10 Grouse SA-N-11 Grison SA-N-12 Grizzly SA-N-14 Grouse SA-N-20 Gargoyle
ABMs	ABM-1 Galosh ABM-3/53T6 Gazelle S-500

Surface-to-surface missiles
(complete list)

Ground based

Naval based

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