This page no longer updated from 31 October 2001. Latest version can be found at www.astronautix.com

astronautix.com Castor 4BXL


Manufacturer Name: TX-859. Other Designations: Castor 4B. Designer: Thiokol. Gross Mass: 11,482 kg. Empty Mass: 1,513 kg. Propellants: Solid Thrust(vac): 43,746 kgf. Thrust(vac): 429.00 kN. Isp: 267 sec. Burn time: 61 sec. Diameter: 1.0 m. Length: 9.0 m. Chambers: 1. Chamber Pressure: 50.60 bar. Area Ratio: 8.55. Country: USA. Status: In Production.

CTA's ORBEX used the Castor 4BXL version, which combined the 4XL motor with 4B's TVC system (6 degree).. First Flown: May 8, 1991. Flown: 2 to end of 1993 (100% success). Propellant Type: Tp-H8229 HTPB Polymer, with 20% Al. Propellant Shape: radially slotted center perforate. Propellant Mass Fraction: 0.868 (9969 kg). Itotal: 26,141 kNs vacuum at 25 Celsius. Pressure: 50.6 atm maximum and an average of 30.7 atm. Nozzle Throat Diameter: 30.84 cm. Nozzle Length: varies - SL, with altitude and canted available. Nozzle Exit Diameter: 90.2 cm. Nozzle Materials: 4130 steel. Casing Materials: 4130 steel.


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 .