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Function Carrier rocket
Manufacturer Yuzhnoye
Country of origin  Ukraine
Height 59.6 metres (196 ft)
Diameter 3.9 metres (13 ft)
Mass 471,000 kilograms (1,038,000 lb)
Stages Three
Payload to
4,000 kilograms (8,800 lb)[1]
Associated rockets
Family Zenit
Launch history
Status Active
Launch sites Baikonur Site 45/1
First Stage
Engines 1 RD-171
Thrust 8,180 kilonewtons (1,840,000 lbf)
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 lbf)
79.5 kilonewtons (17,900 lbf)
Specific impulse 349 sec
Burn time 315 seconds
Fuel RP-1/LOX
Third Stage - Fregat-SB
Engines 1 S5.92
Thrust 19.6 kilonewtons (4,400 lbf)
Specific impulse 327 sec
Burn time 877 seconds
Fuel N2O4/UDMH

The Zenit-3F, Zenit-3SLBF or Zenit-2SB/Fregat is an expendable carrier rocket. It is a member of the Zenit family of rockets, which were designed by the Yuzhnoye Design Office of Ukraine.

Launches of Zenit-3SLBF rockets are conducted from Baikonur Cosmodrome Site 45/1. The rocket consists of a Zenit-2SB (Zenit-2M) core vehicle, with a Fregat-SB upper stage, developed by NPO Lavochkin of Russia, in place of the Block-DM used on the Zenit-3SL and 3SLB.

The first launch of a Zenit-3F took place on 20 January 2011. The payload was an Elektro-L new generation weather satellite.[2] A Zenit-3F was also used to successfully launch the Spektr-R radio astronomy satellite on 18 July 2011.


  • Krebs, Gunter. "Zenit family". Gunter's Space Page. Retrieved 2009-04-15.