Split Rotary Connection for Fail-Safe Bearing Guidance
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Solution Overview
Problem
Existing aircraft flight control devices face catastrophic failures due to breakage of male and female elements, leading to loss of rotary guidance and haptic feedback functionality.
Innovation Solution
A rotary connection device design where both the male and female elements are split into parts that securely hold the bearing in place, ensuring continued rotary guidance even if one part breaks, using fasteners and housing configurations to maintain bearing position and force transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single male element and female element are used for rotary connection, then the device complexity is reduced, but the reliability is compromised due to catastrophic failure risk
Solution Approach 1:
The male element is divided into a first male element part and a second male element part, while the female element is divided into a first female element part and a second female element part. Each part is arranged to carry the bearing independently, so that if one part breaks, the other part maintains the bearing position and rotary guidance function.
2Reliability
If the bearing is held by a single element part, then the device complexity is reduced, but the reliability deteriorates when that part breaks
Solution Approach 1:
Each element (male and female) is segmented into two parts, with each part capable of independently carrying the bearing. This segmentation ensures that the bearing position is retained even if one part breaks, as the other part continues to support the bearing.
Solution Approach 2:
The design anticipates potential breakage of element parts by pre-arranging redundant support structures. Each element part is configured to provide backup support for the bearing, cushioning against the harmful effect of breakage before it occurs.
Data Source
AI summary
A device comprising: a stand; a frame rotatably mounted relative to the stand; a control arm rotatably mounted on the frame; a roll spider rotatably mounted on the frame; a pitch spider rotatably mounted on the control arm; a roll motor that is stationary relative to the frame and that includes a roll pin rotatably mounted on the roll spider; and a pitch motor that is stationary relative to the frame and that includes a pitch pin rotatably mounted on the pitch spider. A rotary connection device.