Segmented Motion Platform for Aircraft Simulator Vertical Range
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Solution Overview
Problem
Hexapod-type motion platforms used in aircraft simulators are space-consuming, expensive, and have limited movement range, making them less accessible to the public and less effective for simulating aircraft motion, particularly in the vertical direction.
Innovation Solution
A motion platform with a stationary frame, a sub-frame, connecting members, and a cabin, where the sub-frame and connecting members form a jointed structure with actuators enabling translational and rotational movements, allowing for a larger dynamic range in the vertical direction without requiring extensive component modifications, and using counterweights for balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hexapod type motion platform is used, then the simulator can provide six degrees of freedom motion, but the device becomes space-consuming and expensive
Solution Approach 1:
The motion platform is segmented into three independent uprights, each capable of vertical movement, rather than using a traditional hexapod structure. This segmentation allows the system to achieve six degrees of freedom motion through coordinated movement of the uprights and connecting members, reducing overall structural complexity and space requirements
Solution Approach 2:
The invention introduces vertical movement of uprights as a new dimension of motion. By allowing uprights to move vertically along the stationary frame and using connecting members that can pivot, the system achieves complex 6-DOF motion through a different mechanical approach than traditional hexapod platforms, reducing spatial requirements
2Length of moving object
If the arms of the hexapod are long and disposed far apart to achieve high vertical movement range, then the movement range improves, but the device becomes more space-consuming
Solution Approach 1:
The connecting members are designed with pivot connections that allow dynamic adjustment of their orientation and length projection. This dynamic capability enables the system to achieve large vertical movement ranges without requiring permanently long arms disposed far apart, as the pivoting mechanism effectively extends the reachable space without increasing the physical footprint
Solution Approach 2:
The sub-frame is disposed substantially within the stationary frame, creating a nested configuration. The connecting members connect the uprights to the sub-frame in a compact arrangement, allowing the motion platform to achieve extensive movement ranges while maintaining a compact overall structure that minimizes space requirements
3Adaptability or versatility
If a hexapod type motion platform is used, then motion simulation is provided, but the number of actuators and components increases making it expensive
Solution Approach 1:
Each actuator in the invention serves multiple functions: actuators on uprights provide both vertical positioning and rotational capability, while actuators on the sub-frame provide both translational and rotational control. This multi-functionality reduces the total number of actuators needed compared to a traditional hexapod system while maintaining full 6-DOF motion simulation capability
Solution Approach 2:
The invention merges the functions of multiple components into fewer elements. The connecting members serve both as structural supports and as actuatable links for motion control. The uprights combine vertical translation and rotation functions in single components, reducing the overall component count and system complexity
Data Source
AI summary
The present invention is related to a motion platform and aircraft simulator comprising the same. According to the invention, a motion platform is provided using at least three uprights and a sub-frame connected to the uprights by connecting members. A cabin in which a person can be accommodated is connected to the sub-frame. By restricting the way the various components are capable of moving relative to each other a motion platform is obtained which is able to offer the desired simulation of motion such as translational movement, pitch, roll, and yaw of the cabin.