Sputnik rocket

Infobox Rocket

---

imsize = 180
caption = Sputnik rocket

name = Sputnik (8K71PS/8A91)
function = Small carrier rocket
manufacturer = OKB-1
country-origin = USSR

height = 8K71PS: convert|30.0|m|ft|lk=on|abbr=on
8A91: convert|31.1|m|ft|abbr=on
diameter = convert|2.99|m|ft|abbr=on
mass = convert|267000|kg|lb|lk=on|abbr=on
8A91: convert|269300|kg|lb|abbr=on
stages = 1

capacities = Infobox Rocket/Payload
location=LEO (8K71PS)
kilos = 8K71PS: convert|500|kg|lb|abbr=on
8A91: convert|1327|kg|lb|abbr=on

family = R-7
comparable = Vanguard
Juno I

status = Retired
sites = LC-1/5, Baikonur
launches = 4 (2 8K71PS, 2 8A91)
success = 3
fail = 1 (8A91)
first = 8K71PS: 4 October 1957
8A91: 27 April 1958
last = 8K71PS: 3 November 1957
8A91: 15 May 1958
payloads = Sputnik 1
Sputnik 2
Sputnik 3

stagedata = Infobox Rocket/Stage
type = booster
number = 4
engines = 1 RD-107
thrust = convert|970|kN|lbf|lk=on|abbr=on
SI = 306 sec
burntime = 120 seconds
fuel = LOX/RP-1 Infobox Rocket/Stage
type = stage
stageno = First
engines = 1 RD-108
thrust = convert|912|kN|lbf|lk=on|abbr=on
SI = 308 sec
burntime = 330 seconds
fuel = LOX/RP-1

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. [ru icon [http://www.tsenki.com/Roket1Show.asp?RoketID=8 Sputnik Rocket] ]

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.

putnik Rocket specifications

*Stage number: 0 - Strap-on boosters; 4 x 8K71PS-0
**Gross mass: 43.0 tonsvague|metric tons?|date=March 2008
**Empty mass: 3.400 tons
**Thrust (vac): 4 × 99,000 kgf = 396 Mgf (3.89 MN)
**Isp: 306 s (3,000 N·s/kg)
**Burn time: 120 s (2 min)
**Isp(sl): 250 s (2,450 N·s/kg)
**Diameter: convert|2.7|m|ft
**Span: convert|2.7|m|ft
**Length: convert|19|m|ft
**Propellants: LOX/RP-1
**Engines: 1 x RD-107-8D74PS per booster = 4

*Stage number: 1 - Core stage; 1 x 8K71PS-1
**Gross mass: 94.0 tons
**Empty mass: 7.495 tons
**Thrust (vac): 99,000 kgf (970 kN)
**Isp: 308 s (3,020 N·s/kg)
**Burn time: 310 s (5 min 10 s)
**Isp(sl): 241 s (2,360 N·s/kg)
**Diameter: convert|3|m|ft
**Span: convert|3|m|ft
**Length: convert|28|m|ft
**Propellants: Lox/RP-1
**Engine: 1 x RD-108-8D75PS

*Total mass: 267 tonsvague|date=March 2008 (534,000 lb)
*LEO payload: 500 kg
*Total liftoff thrust: 3.89 MN

Sputnik 8A91

The Sputnik 8A91 had more powerful 8D76 and 8D77 engines installed, [ [http://www.lpre.de/energomash/RD-107/index.htm RD-107 and RD-108] ] , increasing its payload capacity, and allowing it to launch much heavier satellites than Sputnik 1 and 2. It was launched two times, in 1958. [ [http://planet4589.org/space/log/launchlog.txt Jonathan McDowell's launch log] ] The first launch, on 27 April, failed due to vibrations that unexpectedly occurred during the flight along the longitudinal axis of the rocket. On 5 May, it successfully launched Sputnik 3. [ru icon [http://www.lidorenko.ru/ns3.htm Soviet Solar Cells on Orbit] ]

putnik 8A91 specifications

*Stage number: 0 - Strap-on boosters; 4 x Sputnik 8A91-0
**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 s (2 min 10 s)
**Isp(sl): 252 s (2,470 N·s/kg)
**Diameter: convert|2.7|m|ft
**Span: convert|2.7|m|ft
**Length: convert|19|m|ft
**Propellants: Lox/RP-1
**Engines: 1 x RD-107-8D76 per booster = 4

*Stage number: 1 - Core stage; 1 x Sputnik 8A91-1
**Gross mass: 95.0 tonsvague|date=March 2008
**Empty mass: 7.100 tons
**Thrust (vac): 82,000 kgf (804 kN)
**Isp: 315 s (3,090 N·s/kg)
**Burn time: 360 s (6 min)
**Isp(sl): 246 s (2,410 N·s/kg)
**Diameter: convert|2.99|m|ft
**Length:convert|28|m|ft
**Propellants: LOX/RP-1
**Engine: 1 x RD-108-8D77

*Total mass: 269.3 tonsvague|short, as somebody converted one of them? long? metric?|date=March 2008
*LEO payload: 1,327 kg (2,925 lb)
*Total liftoff thrust: 385,950 kgf (3.784 MN, 850,870 lbf)

References