Launch vehicle derived from DF-5 ICBM, FB-1 launch vehicle. Unkown detailed differences from FB-1; masses given are as for FB-1.

Launches: 1. Failures: 1. Success Rate: 0.00% pct. First Launch Date: 05 November 1974. Last Launch Date: 05 November 1974. LEO Payload: 3,200 kg. to: 200 km Orbit. Payload: 1,000 kg. to a: Geosynchronous transfer trajectory. Liftoff Thrust: 274,000 kgf. Total Mass: 191,000 kg. Core Diameter: 3.4 m. Total Length: 33.0 m. Launch Price $: 20.00 million. in 1994 price dollars.

• Stage Number: 0. 2 x FB-1-1 Gross Mass: 150,400 kg. Empty Mass: 10,000 kg. Thrust (vac): 306,000 kgf. Isp: 289 sec. Burn time: 128 sec. Isp(sl): 258 sec. Diameter: 3.4 m. Span: 3.4 m. Length: 20.1 m. Propellants: N2O4/UDMH No Engines: 4. YF-20A

• Stage Number: 1. 1 x FB-1-1 Gross Mass: 150,400 kg. Empty Mass: 10,000 kg. Thrust (vac): 306,000 kgf. Isp: 289 sec. Burn time: 128 sec. Isp(sl): 258 sec. Diameter: 3.4 m. Span: 3.4 m. Length: 20.1 m. Propellants: N2O4/UDMH No Engines: 4. YF-20A

• Stage Number: 2. 1 x FB-1-2 Gross Mass: 38,300 kg. Empty Mass: 3,500 kg. Thrust (vac): 77,700 kgf. Isp: 295 sec. Burn time: 127 sec. Isp(sl): 270 sec. Diameter: 3.4 m. Span: 3.4 m. Length: 7.4 m. Propellants: N2O4/UDMH No Engines: 1. YF-22/23

• FSW RV Spacecraft: FSW. Payload: FSW RV.

• FSW-1 Spacecraft: FSW.

• 42 - Isakowitz, Steven J,, International Reference to Space Launch Systems Second Edition, AIAA, Washington DC, 1991.
• 61 - Wilson, Andrew, editor,, Jane's/Interavia Space Directory, Jane's Information Group, Coulsdon, Surrey, 1992 et al.