Vostok-2M

Vostok-2M
	Vostok-2M rocket
Function	Carrier rocket
Manufacturer	OKB-1
Country of origin	USSR
Size
Stages	Two
Capacity
Payload to SSO	3,800 kilograms (8,400 lb)
Associated rockets
Family	R-7
Launch history
Status	Retired
Launch sites	Baikonur Site 31/6; Plesetsk Site 41/1 & 43
Total launches	93
Successes	92
Failures	1
First flight	28 August 1964
Last flight	29 August 1991
Notable payloads	Meteor; Resurs; Tselina-D
Boosters
No. boosters	4
Engines	1 RD-107-8D74K
Thrust	995.3 kilonewtons (223,800 lbf)
Burn time	120 seconds
Fuel	RP-1/LOX
First stage
Engines	1 RD-108-8D75K
Thrust	940.4 kilonewtons (211,400 lbf)
Burn time	305 seconds
Fuel	RP-1/LOX
Second stage
Engines	1 RD-0109
Thrust	54.52 kilonewtons (12,260 lbf)
Burn time	400 seconds
Fuel	RP-1/LOX

The Vostok-2M (Russian: Восток meaning "East"), GRAU index 8A92M was an expendable carrier rocket used by the Soviet Union between 1964 and 1991. Ninety-three were launched, of which one failed. Another was destroyed before launch.[1] It was originally built as a specialised version of the earlier Vostok-2, for injecting lighter payloads into higher sun-synchronous orbits. It was a member of the R-7 family of rockets, and the last Vostok.

The Vostok-2M made its maiden flight on 28 August 1964, from Site 31/6 at the Baikonur Cosmodrome, successfully placing Kosmos 44, a Meteor weather satellite into orbit. Its only launch failure occurred on 1 February 1969, when the launch of a Meteor failed due to an upper stage problem.

At 16:01 GMT on 18 March 1980, a Vostok-2M exploded during fueling at Plesetsk Site 43/4, ahead of the launch of a Tselina-D satellite, killing 48 people who were working on the rocket at the time. A filter in a hydrogen peroxide tank of the third stage had accidentally been soldered with lead instead of tin, with the catalytically active lead solder on the filter causing the explosion upon contact hydrogen peroxide.[2] As a consequence, the H2O2 broke down, overheated, and melted the solder, causing pieces to fall into the H2O2 storage tank and cause a runaway chemical reaction. This led to a fire inside the third stage and eventual explosion which resulted in the complete destruction of the launch vehicle and severe pad damage (LC-43 did not host another launch for three years).

Vostok-2M launches occurred from Site 31/6 at Baikonur, and Sites 41/1 and 43 at Plesetsk. It is unclear if any were launched from Site 1/5 at Baikonur. The Vostok-2M was retired in 1991, in favour of standardisation on the Soyuz-U and U2 rockets. The final flight was conducted on 29 August, and carried the IRS-1B satellite for the Indian Space Research Organisation.

References

Wade, Mark. "Vostok 8A92M". Encyclopedia Astronautica. Archived from the original on 2009-03-06. Retrieved 2009-04-15.
Boris Yevseyevich Chertok (2006-06-01). "Rockets and People: Creating a rocket industry" (PDF). Government Printing Office: 636–640. ISBN 9780160766725. Cite journal requires |journal= (help)

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[EA-1] Wade, Mark. "Vostok 8A92M". Encyclopedia Astronautica. Archived from the original on 2009-03-06. Retrieved 2009-04-15.

[2] Boris Yevseyevich Chertok (2006-06-01). "Rockets and People: Creating a rocket industry" (PDF). Government Printing Office: 636–640. ISBN 9780160766725. Cite journal requires |journal= (help)

Soviet, Russian, and Ukrainian launch vehicles
Active	Angara A5 Soyuz-2 2.1a 2.1b 2-1v UR Proton-M Zenit 3SL 3SLB 3F
In development	Angara 1.2 Cyclone-4M Irtysh Proton Light Medium Soyuz-7
Retired	Dnepr Energia Kosmos 1 2I 3 3M N1 R-7 Luna Molniya M L Polyot Soyuz original L M U U2 FG Soyuz/Vostok Sputnik Voskhod Vostok L K 2 2M R-29 Shtil' Volna Start-1 Tsyklon 2 3 UR UR-500 Proton-K Rokot Strela Zenit 2 2M
Cancelled (no launch attempts)	Tsyklon-4

Orbital launch systems
List of orbital launch systems Comparison of orbital launch systems
Current	Angara A5 Antares 230+ Ariane 5 Atlas V Delta IV Heavy Electron Epsilon Falcon 9 Block 5 Falcon Heavy GSLV Mk II Mk III H-IIA Hyperbola-1 Jielong 1 Kuaizhou 1 1A 11^† Kaituozhe 2 LauncherOne^† Long March 2C 2D 2F 3A 3B/E 3C 4B 4C 5 5B 6 7 7A^† 11 Minotaur I IV V C OS-M1^† Pegasus XL Proton-M PSLV Qased Safir Shavit Simorgh^† Soyuz-2 2.1a / STA 2.1b / STB 2-1v Unha Vega Zenit 3SL 3SLB 3F Zhuque-1^†
In development	Angara 1.2 Ariane 6 Bloostar Cyclone-4M Eris Firefly Alpha Beta H3 Hyperbola-2 Irtysh Kuaizhou 21 31 Long March 8 9 Miura 5 New Glenn New Line 1 Nuri OmegA OS-M2 OS-M4 Orbex Prime SLS Soyuz-7 SSLV Starship Terran 1 Vega C Vega E Vulcan Zero Zhuque-2
Retired	Antares 110 120 130^† 230 Ariane 1 2 3 4 ASLV Athena I II Atlas B D E/F G H I II III LV-3B SLV-3 Able Agena Centaur Black Arrow Conestoga^† Delta A B C D E G J L M N 0100 1000 2000 3000 4000 5000 II III IV Diamant Dnepr Energia Europa^† Falcon 1 Falcon 9 v1.0 v1.1 v1.2 "Full Thrust" Feng Bao 1 GSLV Mk I H-I H-II H-IIB Juno I Juno II Kaituozhe-1 Kosmos 1 2I 3 3M Lambda 4S Long March 1 1D^† 2A 2E 3 3B 4A Mu 4S 3C 3H 3S 3SII V N1^† N-I N-II Naro-1 Paektusan Pilot-2^† R-7 Luna Molniya M L Polyot Soyuz original FG L M U U2 Soyuz/Vostok Sputnik Voskhod Vostok L K 2 2M R-29 Shtil' Volna^† Saturn I IB V Scout SLV Space Shuttle SPARK^† Sparta SS-520 Start-1 Thor Able Ablestar Agena Burner Delta DSV-2U Thorad-Agena Titan II GLV IIIA IIIB IIIC IIID IIIE 34D 23G CT-3 IV Tsyklon 2 3 Universal Rocket UR-500 Proton Proton-K Rokot Strela Vanguard VLS-1^† Zenit 2 2M
Classes	Sounding rocket Small-lift launch vehicle Medium-lift launch vehicle Heavy-lift launch vehicle Super heavy-lift launch vehicle
This Template lists historical, current, and future space rockets that at least once attempted (but not necessarily succeeded in) an orbital launch or that are planned to attempt such a launch in the future Symbol ^† indicates historical or current rockets that attempted orbital launches but did not ever succeed (never did or has performed a successful orbital launch)