The Sputnik rocket was an unmanned orbital carrier rocket designed by Sergey Korolyov, derived from the R-7 Semyorka ICBM. On 4 October 1957, it was used to perform the world's first satellite launch, placing Sputnik 1 into a low Earth orbit.
Two versions of the Sputnik were built, the Sputnik-PS (GRAU index 8K71PS), which was used to launch Sputnik 1 and later Sputnik 2, and the Sputnik (8A91), which failed to launch a satellite in April 1958, and subsequently launched Sputnik 3 on 15 May 1958.
A later member of the R-7 family, the Polyot, used the same configuration as the Sputnik rocket, but was constructed from Voskhod components. Because of the similarity, the Polyot was sometimes known as the Sputnik 11A59.
Other articles related to "sputnik":
... Stage number 0 - Strap-on boosters 4 x Sputnik8A91-0 Gross mass 43.0 tons Empty mass 3.400 tons Thrust (vac) 4 × 99,000 kgf = 396 Mgf (3.89 MN) Isp 310 s (3,040 N·s/kg) Burn time 130 ...