HS-393

The Hughes 393 (sometimes referred to as the HS-393) is a communications satellite bus introduced in 1985 by Hughes Space and Communications Company. It was a spin-stabilized bus that had twice as much power as the HS-376 platform.

Boeing 393
ManufacturerBoeing Satellite Development Center
Country of originUnited States
ApplicationsCommunications satellite
Specifications
Spacecraft typeSpin-stabilized
Launch mass2.2 to 2.5 t (2.4 to 2.8 tons)
DimensionsDiameter: 3.7 m (12 ft)
Height (stowed): 3.4 m (11 ft)
Height (deployed): 10 m (33 ft)
Power2 to 2.2 kWatts
Batteries2 × 38Ah NiH2 batteries
RegimeGeostationary orbit
Design life8 years
Production
StatusRetired
On order3
Built3
Launched3
Retired3
Maiden launchJCSAT-1 March 6, 1989
Last launchSBS 6, October 12, 1990
Related spacecraft
Derived fromHS-376
 HS-376 Boeing 601
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