Stator Clip Spline Geometry for Lower Aircraft Brake Drag
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Solution Overview
Problem
The use of stator clips in aircraft brake assemblies can lead to reduced braking performance at high landing energies due to stator clip drag on the torque plate spline.
Innovation Solution
A stator clip with a spline interface featuring a first face, a second face, and a third face that bridges between the first and second faces, along with flange pairs that define lug recesses, is designed to improve structural integrity and reduce drag.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If stator clips are used to increase structural capability, then stator disk strength is improved, but braking performance deteriorates due to increased drag on the torque plate spline
Solution Approach 1:
The stator clip features a spline interface with optimized local geometry including specific face angles (first face at 30-60 degrees, second face at 15-45 degrees), ridge configurations, and flange designs that concentrate structural reinforcement where needed while minimizing contact area and drag on the torque plate spline, thus resolving the contradiction between strength improvement and energy loss
Solution Approach 2:
The invention modifies geometric parameters of the stator clip including the angles of the first and second faces, the configuration of ridges, and the design of flange pairs to optimize the balance between structural capability and drag reduction, allowing the clip to provide necessary strength while maintaining braking performance
Data Source
AI summary
Stator clips may be disposed in the recesses of aircraft brake stator disks to increase the lug strength of the stator disk. The clips may interface with the splines of a torque plate and may comprise ridges that reduce contact between the torque plate barrel and the clip, while maintaining the overall integrity of the clip structure. Furthermore, reduced contact may enable a reduction in drag, improving brake performance.