MR-UR-100 Sotka

ICBM

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
Mass	71.2 tonnes
Length	22,510 mm
Diameter	2,250 mm
Warhead	1 or 4
Blast yield	1×3.4Mt or 4×0.4 Mt

Engine	two-stage liquid fuel + one solid fuel First Stage: 1x RD-268 main engine + 1x RD-863 (15D167) engine Second Stage: 1x RD-862 (15D169) engine Third Stage: one 15D171 solid fuel engine
Operational range	from 1000 km to 10250 km with MIRV 10320 km with single warhead
Guidance system	inertial
Accuracy	CEP 500 metres at 10000 km

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 No.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 10:30 hours GMT on 20 August 1985. The explosion kills 300,000 people 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

Wikimedia Commons has media related to MR UR-100.

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
- 1965–1969
- 1970–1979
- 1980–1989
- 1990–1999
- 2000–2009
- 2010–2019
- 2020–2029

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-50 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	BZhRK 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 Sarmat UR-100 UR-100MR UR-100N UR-200
IRBM	R-14 RSD-10
MRBM	R-5 R-12 RT-15
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 3M-51 Alfa 3M-54 Kalibr 9M730 Burevestnik
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
Surface-to-air	2K11 Krug 2K12 Kub 2K22 Tunguska Kashtan CIWS 9K31 Strela-1 9K32 Strela-2 9K33 Osa 9K34 Strela-3 9K38 Igla/9K338 Igla-S 9K333 Verba 9K35 Strela-10 9K37 Buk 9K330 Tor Pantsir-S1 42S6 Morfey S-25 Berkut S-75 Dvina S-125 Neva/Pechora S-200 Angara/Vega/Dubna S-300 S-350 (50R6) Vityaz S-400 Triumf S-500/55R6M Triumfator-M M-11 Shtorm Sosna-R
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 Shturm-V Hermes-A Kh-47M2 Kinzhal
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 9M133M Kornet-M Kornet-D Hermes

Unguided
rockets

Air-launched	RP-1 RP-5 RP-6 RP-9 RP-15 RP-21 RS-82 RS-132
Rocket artillery	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
(full list)

AA-1 Alkali
AA-2 Atoll
AA-3 Anab
AA-4 Awl
AA-5 Ash
AA-6 Acrid
AA-7 Apex
AA-8 Aphid
AA-9 Amos
AA-10 Alamo
AA-11 Archer
AA-12 Adder
AA-13 Arrow
K-74M2 (R-73M)
K-77M (R-77M)
KS-172

Air-
to-surface
(full list)

Anti-tank
guided
(full list)

Surface-
to-air
(full 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-29 Gizmo Morfey S-350 Sosna-R/RA
Naval- based	SA-N-1 Goa SA-N-2 Guideline SA-NX-2C M-3 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 SA-N-21 Greyhound 9K 96 Redut Palash/Palma
Anti- ballistic	ABM-1 Galosh ABM-3/53T6 Gazelle S-500 A-235

Surface-
to-surface
(full list)

Ground- based	SS-1 Scunner/SS-1 Scud (Scud-A/-B/-C/-D) SS-2 Sibling SS-3 Shyster SS-4 Sandal SS-5 Skean SS-6 Sapwood SS-7 Saddler SS-8 Sasin SS-8B Sasin 2 SS-9 Scarp SS-10 Scrag SS-11 Sego SS-12 Scaleboard SS-X-13 Savage SS-13 Savage SS-14 Scamp/Scapegoat SS-15 Scrooge SS-16 Sinner SS-17 Spanker SS-18 Satan SS-19 Stiletto SS-20 Saber SS-21 Scarab SS-22 Scaleboard SS-23 Spider SS-24 Scalpel SS-25 Sickle SS-26 Stone SS-27 Sickle B SS-28 Saber 2 SS-29 Sickle C SS-X-30 Satan 2 SS-X-31 Sickle D SS-X-32Zh Scalpel B Avangard / HGV Yu-7# SS-X-33 Stone AN
Naval- based	14KhK1 15Kh 17Kh KS-1 Komet P-20 Sokol P-40 P-47 SS-N-1 Scrubber SS-N-2 Styx SS-N-3c Shaddock SS-N-3a Shaddock 3b Sepal SS-N-4 Sark SS-N-5 Sark/Serb D-6 D-6M D-7 R-15M SS-N-6 Serb SS-N-7 Starbright SS-N-8 Sawfly SS-N-9 Siren SS-N-12 Sandbox SS-NX-13 Serb SS-N-14 Silex SS-N-15 Starfish SS-N-16 Stallion SS-N-17 Snipe SS-N-18 Stingray SS-N-19 Shipwreck SS-N-20 Sturgeon SS-N-21 Sampson SS-N-22 Sunburn SS-N-23 Skif R29RM SS-N-23A Skif SS-N-23B Skif SS-NX-24 Scorpion SS-N-25 Switchblade SS-N-26 Strobile SS-N-27 Sizzler SS-N-30A 3M-14 SS-NX-28 SS-N-29 SS-N-32 SS-NX-33 SS-NX-34 Skif SS-N-35 SS-N-36 SS-NX-37 SS-NX-38 Canyon
Ship- to-ship	10KhN SSC-1B Sepal Redut SSC-2 Salish/Samlet AS/KS-1 P-20 Sokol SSC-K P-1 Schuka KSShch SSC-3 Styx Rubezh SSC-4 Slingshot SSC-X-5 Scorpion SSC-6 Sennight SSC-7 Stone KS 9M728 SSC-8 Stone KB 9M729 SSC-14 Klub N/M 3M14/54 SSC-13 BrahMos SSC-10/SSC-5 Stooge Bastion P/S SSC-7/12 3M-80MV SSC-X-11 "GZUR" SSC-X-15 Skif SSC-X-9 Stone AN Hermes M ATS Hermes K ATS