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

FunctionCarrier rocket
ManufacturerYuzhmash
Country of originUkraine
Size
Height59.6 metres (196 ft)
Diameter3.9 metres (13 ft)
Mass471,000 kilograms (1,038,000 lb)
StagesThree
Capacity
Payload to GTO
Mass4,000 kilograms (8,800 lb)[1]
Associated rockets
FamilyZenit
Launch history
StatusRetired
Launch sitesBaikonur Site 45/1
First flight20 January 2011 (Elektro-L No.1)
Last flight26 December 2017 (AngoSat 1)
First stage – Zenit-2SB First stage[2]
Height32.9 m (108 ft)
Diameter3.9 m (13 ft)
Empty mass27,564 kg (60,768 lb)
Gross mass354,350 kg (781,210 lb)
Propellant massRG-1: 90,219 kg (198,899 lb)
LOX: 236,567 kg (521,541 lb)
Powered byRD-171
Maximum thrustSea Level: 7,257 kN (1,631,000 lbf)
Vacuum: 7,908 kN (1,778,000 lbf)
Specific impulseSea Level: 309.5 s (3.035 km/s)
Vacuum: 337.2 s (3.307 km/s)
Burn time140-150 seconds
PropellantLOX/RG-1
Second stage – Zenit-2SB Second stage[2]
Height10.4 m (34 ft)
Diameter3.9 m (13 ft)
Empty mass8,307 kg (18,314 lb)
Gross mass90,794 kg (200,167 lb)
Propellant massRG-1: 23,056 kg (50,830 lb)
LOX: 59,431 kg (131,023 lb)
Powered by1 RD-120
1 RD-8
Maximum thrustRD-120: 912 kilonewtons (205,000 lbf)
RD-8: 79.4 kilonewtons (17,800 lbf)
Specific impulseVacuum:
RD-120: 350 s (3.4 km/s)
RD-8: 342.8 s (3.362 km/s)
Burn time360-370 seconds
PropellantLOX / RG-1
Third stage – Fregat-SB
Powered by1 S5.92
Maximum thrust19.6 kilonewtons (4,400 lbf)
Specific impulse327 s
Burn time877 s
Propellantdinitrogen tetroxide / UDMH

Launches of Zenit-3SLBF rockets were conducted from Baikonur Cosmodrome Site 45/1. The rocket consisted 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.[3] A Zenit-3F was also used to successfully launch the Spektr-R radio astronomy satellite on 18 July 2011.

Launches

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Flight No. Date and time (UTC) Payload Orbit Outcome
1 20 January 2011
12:29
Elektro-L No.1 GEO Success
2 18 July 2011
02:31
Spektr-R HEO Success
3 11 December 2015
13:45
Elektro-L No.2 GEO Success
4 26 December 2017
19:00
AngoSat 1 GEO Success
References:[4]

References

edit
  1. ^ "Zenit-3SLBF". Yuzhnoye.
  2. ^ a b "Zenit-2SB". Roscosmos (in Russian). Retrieved 7 April 2016.
  3. ^ "Russia meteo satellite Electro-L successfully orbited". ITAR-TASS. 2011-01-21. Archived from the original on 2011-01-22.
  4. ^ Krebs, Gunter. "Zenit family". Gunter's Space Page. Retrieved 2009-04-15.