Gyroscopic Module Slew Bearing Layout for Compact High Torque
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Solution Overview
Problem
The physical size and mass of conventional control moment gyroscope rotors and their housings pose challenges in generating usable torque, particularly in applications where space and dimensions are critical.
Innovation Solution
The use of slew bearings instead of conventional bearings to support and change the orientation of the gyroscope rotor, driven by a separate power source, allows for a more compact design by distributing the load and reducing the overall size and mass of the gyroscopic module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional bearings are used to support the gyroscope rotor, then the structural simplicity is maintained, but the physical size and mass of the gyroscopic module increase
Solution Approach 1:
The bearing system is segmented into multiple slew bearings distributed around the rotor circumference, with each bearing independently supporting a portion of the rotor weight. This segmentation allows the rotor to be supported by multiple smaller bearing units rather than a single large bearing, reducing the overall footprint and mass of the gyroscopic module while maintaining structural integrity
Solution Approach 2:
The bearing arrangement transitions from a conventional single-plane support system to a three-dimensional distributed configuration where slew bearings are positioned at multiple angular locations around the rotor. This spatial distribution in multiple dimensions allows for compact packaging of the bearing support structure, significantly reducing the volume required for the bearing housing and mounting features
2Force
If the rotor diameter is increased to generate more torque, then the torque output is improved, but the space required for housing the rotor increases
Solution Approach 1:
The slew bearing structure is merged with the housing structure, where the bearing outer races are directly integrated into the housing walls. This consolidation eliminates the need for separate bearing housings and mounting brackets, allowing the rotor to be supported directly by the housing structure itself. The result is a compact design where the housing area is minimized while still accommodating a large-diameter rotor for high torque output
Solution Approach 2:
The housing structure serves multiple functions: it provides the outer boundary of the module, supports the slew bearings, mounts the rotor, and defines the overall package dimensions. This multi-functionality allows the housing to be optimized as a single integrated component rather than multiple separate parts, maximizing the rotor diameter within the available housing area while maintaining structural requirements
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables the gyroscopic module to be housed in the smallest possible space for the largest possible rotor diameter, reducing mass, component count, and cost while maintaining or increasing torque output, thus enhancing usability and market acceptance.
Implementation Method 1
The use of slew bearings instead of conventional bearings to support and change the orientation of the gyroscope rotor, driven by a separate power source, allows for a more compact design by distributing the load
Implementation Method 2
the orientation of the suspended load is controlled by transferring the angular momentum within the control moment gyroscopic modules
Data Source
AI summary
A gyroscopic module comprises at least one gyroscopic rotor rotatably mounted to a support, wherein the at least one gyroscopic rotor is driven by at least one first power source and at least one gimbal frame is coupled to the support of the at least one gyroscopic rotor. The gyroscopic module comprises at least one slew bearing coupled to the at least one gimbal frame to change an orientation of the at least one gyroscopic rotor, wherein the at least one slew bearing is driven by at least one second power source mounted to the at least one gimbal frame.