This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com
Manufacturer Name: Orbus 21. Designer: CSD. Used on stages: IUS-1 , TOS. Used on launch vehicles: Athena-1, Athena-2, Athena-3, Titan 34D. Gross Mass: 10,841 kg. Empty Mass: 1,134 kg. Propellants: Solid Thrust(vac): 18,508 kgf. Thrust(vac): 181.50 kN. Isp: 296 sec. Isp (sea level): 115 sec. Burn time: 152 sec. Diameter: 2.3 m. Length: 3.1 m. Chambers: 1. Chamber Pressure: 58.00 bar. Area Ratio: 64.00. Country: USA. Status: In Production. First Flight: 1982. Last Flight: 1999. Flown: 43. Comments: Used in TOS; IUS-1 on Shuttle, Titan 34D. Known by manufacturer as Orbus 21. Propellant: 86% solids made up of HTPB UTP-19360A. Shape: cylindrical.
Back to Index
Last update 12 March 2001.
Definitions of Technical Terms.
Contact Mark Wade with any corrections or comments.
Conditions for use of drawings, pictures, or other materials from this site..
© Mark Wade, 2001 .