Directory of U.S. Military Rockets and Missiles|
Appendix 4: Undesignated Vehicles
|Copyright © 2005-2006 Andreas Parsch|
Orbital Sciences Corp. (OSC) builds launchers for ballistic targets, which consist of a stack of two Aerojet SR19-AJ-1 solid-propellant rockets. The motors are second stages of surplus LGM-30F Minuteman II missiles. Two MLRS rocket motors are strapped to the first stage to increase the lift-off thrust, and both stages are fitted with four stabilizing fins. The rocket has apparently no proper name, and is generally referred to by the stage sequence SR19-SR19 (or SR19/SR19).
|Photo: Orbital Sciences|
The first firing of an SR19-SR19 combination by OSC occurred on 6 September 1999. As of September 2006, a total of seven launches have been conducted. The payloads were ballistic targets for tests by the U.S. Army and/or Missile Defense Agency.
Another ballistic missile target launcher, which uses two SR19 stages, is the Coleman LRALT (Long-Range Air-Launched Target).
Note: Data given by several sources show slight variations. Figures given below may therefore be inaccurate!
Data for SR19-SR19:
|Length||15.5 m (50 ft 10 in)|
|Diameter||1.32 m (4 ft 4 in)|
|Weight||15000 kg (33000 lb)|
|Altitude||300 km (185 miles)|
|Propulsion||Booster: 2x MLRS solid-fueled rocket|
1st stage: Aerojet SR19-AJ-1 solid-fueled rocket; 268 kN (60300 lb)
2nd stage: Aerojet SR19-AJ-1 solid-fueled rocket; 268 kN (60300 lb)
 Mark Wade: Encyclopedia Astronautica
 Jonathan McDowell: Launch Vehicles Database
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