Sputnik rocket | |
| Function | Early (first)carrier rocket |
|---|---|
| Manufacturer | OKB-1 |
| Country of origin | USSR |
| Size | |
| Height | 8K71PS: 30 m (98 ft) 8A91: 31.1 m (102 ft) |
| Diameter | 2.99 m (9 ft 10 in) |
| Width | 10.303 m (33.80 ft) |
| Mass | 8K71PS: 267,000 kg (589,000 lb) 8A91: 269,300 kg (593,700 lb) |
| Stages | 2 |
| Capacity | |
| Payload toLEO | |
| Mass | 8K71PS: 500 kg (1,100 lb) 8A91: 1,327 kg (2,926 lb) |
| Associated rockets | |
| Family | R-7 |
| Comparable | Vanguard Juno I |
| Launch history | |
| Status | Retired |
| Launch sites | Baikonur,Site 1/5 |
| Total launches | 4 (8K71PS: 2, 8A91: 2) |
| Success(es) | 3 |
| Failure | 1 (8A91) |
| First flight | 8K71PS: 4 October 1957 8A91: 27 April 1958 |
| Last flight | 8K71PS: 3 November 1957 8A91: 15 May 1958 |
| Carries passengers or cargo | Sputnik 1 Sputnik 2 Sputnik 3 |
| Boosters (First stage) – Block B, V, G & D[a] | |
| No. boosters | 4 |
| Powered by | 1 × RD-107 |
| Maximum thrust | 970 kN (220,000 lbf) |
| Specific impulse | 306 s (3.00 km/s) |
| Burn time | 120 seconds |
| Propellant | LOX / Kerosene |
| Second stage (core) – Block A | |
| Powered by | 1 × RD-108 |
| Maximum thrust | 912 kN (205,000 lbf) |
| Specific impulse | 308 s (3.02 km/s) |
| Burn time | 330 seconds |
| Propellant | LOX / Kerosene |
TheSputnik rocket was an uncrewedorbitalcarrier rocket designed bySergei Korolev in theSoviet Union, derived from theR-7 SemyorkaICBM. On 4 October 1957, it was used to perform the world's firstsatellite launch, placingSputnik 1 into alow Earth orbit.
Two versions of the Sputnik were built, the Sputnik-PS (GRAU index 8K71PS), which was used to launchSputnik 1 and laterSputnik 2, and the Sputnik (8A91), which failed to launch a satellite in April 1958, and subsequently launchedSputnik 3 on 15 May 1958.[1]
A later member of theR-7 family, thePolyot, used the same configuration as the Sputnik rocket, but was constructed fromVoskhod components. Because of the similarity, the Polyot was sometimes known as the Sputnik 11A59.
TheSputnik 8A91 had more powerful 8D76 and 8D77 engines installed,[2] increasing its payload capacity, and allowing it to launch much heavier satellites thanSputnik 1 andSputnik 2. It was launched two times, in 1958.[3] The first launch, on 27 April, failed due to vibrations that unexpectedly occurred during the flight along thelongitudinal axis of the rocket. On 15 May, it successfully launchedSputnik 3.[4][5]
SATCAT (No. 1. The satellite has SATCAT No. 2.[7])