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R-7K
R-7K
	A 2-view drawing of the R-7 Semyorka (NATO code-name SS-6 Sapwood)
Type	Ballistic missile
Place of origin	Soviet Union/Russia
Service history
In service	9 February 2010 - present
Used by	Democratic People's Republic of Korea: Korean People's Army; Soviet Union: Strategic Missile Troops
Production history
Designer	Sergei Korolev
Designed	From 1953
Manufacturer	RSC Energia; TsSKB-Progress
Specifications
Mass	280 metric tons (280 long tons; 310 short tons)
Length	34 m (112 ft)
Diameter	3.02 m (9.9 ft)
Engine	1st stage: 4x jettisonable four-chamber RD-107 booster engines each with 2x vernier rocket engines plus 1x four-chamber RD-108 core engine with 4x vernier rocket engines.; 2nd stage: 1x four-chamber RD-108 core engine with 4x vernier rocket engines.; ; RD-107 4x 907.4 kN (203,992 lbf); RD-108 1x 907.4 kN (203,992 lbf); Vernier 12x 38.259 kN (8,601 lbf);
Propellant	Kerosene T-1 fuel + liquid oxygen (LO2) Oxidiser.
Guidance; system	Inertial guidance with radio control of vernier thrusters for launch.
Steering; system	12x vernier thrusters arranged around the booster clusters and the core engines
Accuracy	2.5-5.0 kilometers (max. deviation 10 kilometers)

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