Type 33 Biaxial Gimbal Assembly
The Type 33 Biaxial Gimbal is of a size appropriate for many antennas, and it has become by far our most popular Antenna Pointing Mechanism configuration. Available in either Elevation/Azimuth or X/Y, these units have proven their reliability and versatility many times over. Each actuator of the gimbal can incorporate RF and cable management capabilities. The actuators are based on Moog’s heritage Type 3 actuator design having significant on-orbit experience with customized mechanical and electrical interfaces.
The gimbals can incorporate a wide range of options; Launch locks, caging mechanisms, cable management systems, position sensors and waveguide brackets/ mounting features are some examples of the options available to the designer. Please contact Moog engineers for assistance when evaluating options for your application.
Key Features:
- Compact two-axis gimbal
- Can accommodate RF coax rotary Joints or waveguides
- High resolution and fine pointing
- Can accommodate launch locks, caging mechanisms and cable management systems
- Configurable in El/Az or X/Y cross axis configurations
- Actuated by space qualified Moog Type 3 actuators
Specifications
| Characteristic | Units | Basis | Data |
Output Step Angle* |
Degrees | Standard | 0.009375 |
| Steps/Revolution* | - | Standard | 38,400 |
| Harmonic Drive Ratio* | - | Standard | 160:1 |
| Output Step Rate* | Step/Sec (Deg/Sec) | Maximum | 400 (3.75) |
| Power* | Watts | Nominal | 10 |
| Inertial Capability* | Slug ft2 | Typical | 25 |
| kg-m2 | Typical | 34 | |
| Output Torque* | lb-in | Typical | 150 |
| N-m | Typical | 17 | |
| Holding Torque Powered* | lb-in | Typical | 300 |
| N-m | Typical | 34 | |
| Unpowered* | lb-in | Typical | 80 |
| N-m | Typical | 9.0 | |
| Torsional Stiffness in the AZ-EL Plane | lb-in/rad | Typical | 150,000 |
| N-m/rad | Typical | 16,950 | |
| Perpendicular to Plane | lb-in/rad | Typical | 110,00 |
| N-m/rad | Typical | 12,428 | |
| Output Flange Load Capability Axial | lb | Maximum | 420 |
| N | Maximum | 1,868 | |
| Transverse | lb | Maximum | 420 |
| N | Maximum | 1,868 | |
| Moment | lb-ft | Maximum | 150 |
| N-m | Maximum | 203 | |
| Total Assembly Weight | lb | Typical | 9.6 |
| kg | Typical | 4.4 |
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