CASPR Space Mechanisms Actuator Family
Customizable Actuator for Space Precision Rotation (CASPR) family of zero-backlash rotary actuators for antenna and payload articulation, plus deployment, large/medium rotary, and biaxial actuator variants.
Technical specifications
- CASPR 20 Dimensions
- 5.5 in. diameter x 6 in. length
- CASPR 20 Torque
- 516 in-lbs @ 28V
- CASPR 20 Application
- Articulate 1-3 meter antenna
- CASPR 10 Dimensions
- 3.6 in. diameter x 4 in. length
- CASPR 10 Torque
- 78 in-lbs @ 28V
- CASPR 10 Application
- Articulate <1 meter antenna
- Gear Type
- Zero backlash harmonic drive gears
- Orbit Capability
- LEO, HEO, MEO, GEO
- Deployment Actuators
- TRL 9 - deploy structure or spool cables
- Large Rotary Actuators
- TRL 9 - large payload/antenna/boom articulation
- Medium Rotary Actuators
- TRL 9 - higher speed, dual actuator configuration
- Biaxial Actuators
- TRL 9 - orthogonal axes of rotation / cone coverage
About
Northrop Grumman’s Common Space Vehicle Mechanisms line includes the CASPR (Customizable Actuator for Space Precision Rotation) family, which uses zero-backlash harmonic drive gears to provide accurate, smooth rotation for antenna and payload articulation across LEO, MEO, HEO and GEO orbits. CASPR 20 (5.5 in. dia x 6 in. length, 516 in-lbs torque @ 28V) is sized to articulate 1-3 meter antennas; CASPR 10 (3.6 in. dia x 4 in. length, 78 in-lbs torque @ 28V) articulates antennas under 1 meter. Both are available in Class A-D configurations with optional position feedback.
The broader mechanisms portfolio, flight-proven over 40+ years with 100% mission success on 50+ missions, also includes Deployment Actuators (TRL 9) for deploying structures or spooling cables, Large Rotary Actuators (TRL 9) for large payload/antenna/boom articulation, Medium Rotary Actuators (TRL 9) with higher-speed dual-actuator configurations, and Biaxial Actuators (TRL 9) providing orthogonal axes of rotation (‘cone’ coverage) for medium-sized antennas.
Documentation
No public datasheet yet — request the datasheet / ICD from the supplier.
