Zenit-3F
| Function | Carrier rocket |
|---|---|
| Manufacturer | Yuzhmash |
| Country of origin | Ukraine |
| Size | |
| Height | 59.6 m (196 ft) |
| Diameter | 3.9 m (13 ft) |
| Mass | 471,000 kg (1,038,000 lb) |
| Stages | 3 |
| Capacity | |
| Payload to GTO | |
| Mass | 4,000 kg (8,800 lb) |
| Associated rockets | |
| Family | Zenit |
| Launch history | |
| Status | Retired |
| Launch sites | Baikonur, Site 45/1 |
| First flight | 20 January 2011 (Elektro-L No.1) |
| Last flight | 26 December 2017 (AngoSat 1) |
| First stage – Zenit-2SB first stage | |
| Height | 32.9 m (108 ft) |
| Diameter | 3.9 m (13 ft) |
| Empty mass | 27,564 kg (60,768 lb) |
| Gross mass | 354,350 kg (781,210 lb) |
| Propellant mass | RG-1: 90,219 kg (198,899 lb) LOX: 236,567 kg (521,541 lb) |
| Powered by | 1 × RD-171 |
| Maximum thrust | SL: 7,257 kN (1,631,000 lbf) vac: 7,908 kN (1,778,000 lbf) |
| Specific impulse | SL: 309.5 s (3.035 km/s) vac: 337.2 s (3.307 km/s) |
| Burn time | 140–150 seconds |
| Propellant | LOX/RG-1 |
| Second stage – Zenit-2SB second stage | |
| Height | 10.4 m (34 ft) |
| Diameter | 3.9 m (13 ft) |
| Empty mass | 8,307 kg (18,314 lb) |
| Gross mass | 90,794 kg (200,167 lb) |
| Propellant mass | RG-1: 23,056 kg (50,830 lb) LOX: 59,431 kg (131,023 lb) |
| Powered by | 1 × RD-120 1 × RD-8 |
| Maximum thrust | RD-120: 912 kN (205,000 lbf) RD-8: 79.4 kN (17,800 lbf) |
| Specific impulse | RD-120: 350 s (3.4 km/s) RD-8: 342.8 s (3.362 km/s) |
| Burn time | 360–370 seconds |
| Propellant | LOX / RG-1 |
| Third stage – Fregat-SB | |
| Powered by | 1 × S5.92 |
| Maximum thrust | 19.6 kN (4,400 lbf) |
| Specific impulse | 327 s (3.21 km/s) |
| Burn time | 877 seconds |
| Propellant | N2O4 / UDMH |
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.
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. A Zenit-3F was also used to successfully launch the Spektr-R radio astronomy satellite on 18 July 2011.