GEM 46  
Initial Operational Capability (IOC): 1997
Total Production: 75
Origin: United States of America
Corporations: ATK Alliant Techsystems
Parent System: GEM
Initial Operational Capability (IOC): 1989
Total Production: 900
Family Members: GEM 40, GEM 60 and GEM 63
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Description: The Graphite Epoxy Motor (GEM) booster was designed to increase the launch capability of Boeing Delta II rocket. GEMs provide outstanding reliability and lower costs over their predecessors. Thereafter GEM boosters power Delta III and Delta IV space launch systems as well as the Atlas V rocket.

The GEM 46 is a derivative of proven GEM 40 booster tailored for use by the Delta III launch vehicle. It features improved performance and vectorable nozzles on 3 of 6 ground-start motors. This booster only accepts a 9 motors configuration (3 air-start, 3 ground-start with fixed nozzles and 3 ground-start with vectorable nozzles). GEM 46 was available for use assisting the Delta III rocket in 1997.

GEM 46 Applications

Space Systems Delta III

GEM 46 Specifications

Diameter: 1,170 millimeter (46 inch)
Length: 13.0 meter (510 inch)
Max Takeoff Weight: 16,865 kilogram
CEP: Circular Error Probable
Meters (m)   Kilometers (km)   Nautic Miles (nm)   Inch (in)   Yard (yd)   Foot (ft)   Millimeter (mm)
Pound (lb)   Kilogram (kg)   kN (KiloNewton)   Ton (t)
Meters per Second (mps)   Kilometers per Hour (kph)   Knot (kt)   Miles per Hour (mph)
Liter (l)   Galon (gl)
Year (yr)   Minutes (min)   Second (sec)
Shaft-Horse-Power (shp)

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