GEM 40  
Initial Operational Capability (IOC): 1989
Total Production: 800
Origin: United States of America
Corporations: ATK Alliant Techsystems
Parent System: GEM
Initial Operational Capability (IOC): 1989
Total Production: 900
Family Members: GEM 46 and GEM 60
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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.

The GEM 40 booster was introduced in late 1980s powering the Delta II Launch Vehicle. They are attached to the launch vehicle base in different configurations, i. e., 9 motors (6 ground-start and 3 air-start), 4 and 3 motors (ground-start).

GEM 40 Applications

Space Systems Delta II

GEM 40 Specifications

Diameter: 1,020 millimeter (40 inch)
Length: 10.0 meter (395 inch)
Max Takeoff Weight: 11,767 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)

Operators & Related Equipment


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