Polyot (rocket)
Soviet rocket
From Wikipedia, the free encyclopedia
The Polyot (Russian: Полёт, lit. 'flight', GRAU index: 11A59) was an interim orbital carrier rocket, built to test ASAT spacecraft. It was required as a stopgap after the cancellation of the UR-200 programme, but before the Tsyklon could enter service. Only two were ever launched, the first on 1 November 1963, and the last on 12 April 1964. Both of these flights were successful.
 Polyot rocket | |
| Function | Small-lift launch vehicle |
|---|---|
| Manufacturer | OKB-1 |
| Country of origin | Soviet Union |
| Size | |
| Height | 30 m (98 ft) |
| Diameter | 2.99 m (9 ft 10 in) |
| Mass | 277,000 kg (611,000 lb) |
| Stages | 1 |
| Capacity | |
| Payload to LEO | |
| Altitude | 300 km (190 mi) |
| Orbital inclination | 59° |
| Mass | 1,400 kg (3,100 lb) |
| Associated rockets | |
| Family | R-7 |
| Launch history | |
| Status | Retired |
| Launch sites | Baikonur, Site 31/6 |
| Total launches | 2 |
| Success(es) | 2 |
| First flight | 1 November 1963 |
| Last flight | 12 April 1964 |
| Boosters (First stage) – Block B, V, G & D[a] | |
| No. boosters | 4 |
| Powered by | 1 × RD-107-8D74K |
| Maximum thrust | 995.3 kN (223,800 lbf) |
| Total thrust | 3,981.2 kN (895,000 lbf) |
| Specific impulse | 257 s (2.52 km/s) |
| Burn time | 119 seconds |
| Propellant | LOX / RP-1 |
| Second stage (core) – Block A | |
| Powered by | 1 × RD-108 |
| Maximum thrust | 294 kN (66,000 lbf) |
| Specific impulse | 330 s (3.2 km/s) |
| Burn time | 240 seconds |
| Propellant | LOX / RP-1 |
The rocket consisted of a core stage, and four boosters, which were taken from a Voskhod 11A57 rocket. It was capable of delivering a 1,400 kilograms (3,100 lb) payload into a 300 kilometres (190 mi) by 59° Low Earth orbit.
It is a member of the R-7 family.
Notes
- This is a transliteration of the second through fifth letters of the Cyrillic alphabet (Б, В, Г, Д). A sense-for-sense translation would correspond to the second through fifth letters of the Latin alphabet, 'Block B, C, D & E'.
