Zenit-2

From Wikipedia, the free encyclopedia

**Zenit-2**
Size
Zenit-2 at Site 45/1
Function	Carrier rocket
Manufacturer	Yuzhnoye
Country of origin	Ukraine
Height	57 metres (187 ft)
Diameter	3.9 metres (13 ft)
Mass	444,900 kilograms (980,800 lb)
Stages	Two
Capacity
Payload to LEO	13,740 kilograms (30,290 lb)
Payload to SSO	5,000 kilograms (11,000 lb)
Associated rockets
Family	Zenit
Derivatives	Zenit-2M Zenit-3SL
Launch history
Status	Active
Launch sites	Baikonur Site 45
Total launches	37
Successes	31
Failures	6
First flight	13 April 1985
First Stage
Engines	1 RD-171 NPO Energomash Russia
Thrust	8,180 kilonewtons (1,840,000 lb_f)
Specific impulse	337 sec
Burn time	150 seconds
Fuel	RP-1/LOX
Second Stage
Engines	1 RD-120 1 RD-8
Thrust	912 kilonewtons (205,000 lb_f) 79.5 kilonewtons (17,900 lb_f)
Specific impulse	349 sec
Burn time	315 seconds
Fuel	RP-1/LOX

The Zenit-2 is a Ukrainian, previously Soviet, expendable carrier rocket. First flown in 1985, it has been launched 37 times, with six failures. It is a member of the Zenit family of rockets, and was designed by the Yuzhnoye Design Bureau. A modified version, the Zenit-2S, is used as the first two stages of the Sea Launch Zenit-3SL rocket.^[1] Launches of Zenit-2 rockets are conducted from Baikonur Cosmodrome Site 45/1. A second pad, 45/2, was also constructed, but was only used for two launches before being destroyed in an explosion.^[2] A third pad, Site 35 at the Plesetsk Cosmodrome was never completed, and work was abandoned after the dissolution of the Soviet Union.^[2]

The Zenit-2 is currently being replaced by the Zenit-2M, which incorporates enhancements made during the development of the Zenit-3SL, and it is unclear whether any remain to be launched. The Zenit-2 has a fairly low flight rate as the Russian government usually avoids flying national security payloads on Ukrainian rockets.

During the late 1990s, the Zenit-2 was marketed for commercial launches. Only one such launch was conducted, with a group of Globalstar satellites, which ended in failure after a computer error resulted in the premature cutoff of the second stage.

References

↑ "The Rocket - Zenit-3SL". Sea Launch. Retrieved 2009-04-14.
↑ 2.0 2.1 Wade, Mark. "Zenit". Encyclopedia Astronautica. Retrieved 2009-04-14.

v t e Orbital launch systems

Current	Antares Ariane 5 Atlas V Delta II IV Dnepr-1 Epsilon Falcon 9 v1.1 GSLV H-IIA H-IIB Kuaizhou Long March 2C 2D 2F 3A 3B 3C 4B 4C Minotaur I IV V Pegasus Proton-M PSLV Rokot Safir Shavit Strela Soyuz U FG 2 2-1v Taurus Unha Vega VLS-1 Zenit 2M 3SL 3SLB 3F

Planned	Angara Ariane 6 Athena Ic IIc III Ausroc IV Falcon 9-R Falcon Heavy GSLV Mk III Haas Long March 5 6 7 9 11 LauncherOne Naro-2 RPS (420, 550) Simorgh SLS Southern Cross SPARK Tsyklon-4 VLM VLS-Alfa VLS-Beta

Retired	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 III Diamant Energia Europa Falcon 1 Falcon 9 v1.0 Feng Bao 1 H-I H-II Juno I Juno II Kaituozhe-1 Kosmos 1 2I 3 3M Lambda 4S Long March 1 2A 2E 3 4A Mu 4S 3C 3H 3S 3SII V N1 N-I N-II Naro-1 Paektusan Pilot Proton UR-500 K R-7 Luna Molniya M L Polyot Soyuz L M U2 Soyuz/Vostok Sputnik Voskhod Vostok L K 2 2M Saturn I IB V INT-21 Scout Shtil' SLV Space Shuttle Sparta 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 Vanguard Volna Zenit-2

This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.