The linear boom actuator designed for the Galileo spacecraft
Abstract
Because the linear boom actuator is to be used on a flight spacecraft, as opposed to a ground based application, there is a comprehensive set of requirements. First, of course, the actuator must be capable of positioning and holding the load. Initially the load as predicted to be 4448 N (1000 lb) but with subsequent spacecraft configuration changes the load has been greatly reduced to a constant tensile pull of 1477 N (332 lb) due to centrifugal force. Lesser compressive loads of 1317 N (296 centrifugal lb) may be experienced during launch and deployment. This actuator must have the maximum redundancy possible. Life requirements were defined by the 10.16 to 15.24 cm (4 to 6 in.) total liner travel expected during the five-year flight duration. Liner range required of the actuator was set at plus and minus 5.08 cm to accommodate configuration changes.
- Publication:
-
The 17th Aerospace Mechanics Symposium
- Pub Date:
- May 1983
- Bibcode:
- 1983aeme.symp...81K
- Keywords:
-
- Actuators;
- Booms (Equipment);
- Galileo Probe;
- Design Analysis;
- Fabrication;
- Redundancy;
- Service Life;
- Temperature Control;
- Launch Vehicles and Space Vehicles