Aircraft Container Suspension Release Mechanism
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Solution Overview
Problem
Existing container suspension and release systems on aircraft are prone to inadvertent release due to adverse aerodynamic loading and mechanical vibration, affecting system reliability and safety during captive carry and release operations.
Innovation Solution
A container suspension and release system with mechanically actuated retention arms and fixed sway brace arms, utilizing an actuator to extend and rotate retention arms from a carry position to a deployed position, ensuring consistent release and maintaining alignment during ejection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If sway braces and release mechanisms are combined in existing systems, then structural integration is achieved, but inadvertent release occurs under adverse aerodynamic loading
Solution Approach 1:
The system divides the retention function into separate components: fixed sway brace arms provide structural support and stability, while mechanically actuated retention arms handle the release function. This segmentation prevents aerodynamic forces from causing inadvertent release while maintaining structural integration benefits.
Solution Approach 2:
The retention arms are designed to be mechanically actuated rather than fixed, allowing controlled movement between retained and released positions. This dynamic capability ensures reliable release while preventing inadvertent activation under aerodynamic loading through proper actuation mechanisms.
2Ease of operation
If retention arms are made movable for release, then release functionality is achieved, but mechanical vibration causes inadvertent activation
Solution Approach 1:
The system incorporates preliminary stabilization actions through fixed sway brace arms that establish a stable baseline position for the retention arms before release is commanded. This preliminary positioning reduces susceptibility to vibration-induced inadvertent activation.
Solution Approach 2:
Mechanical actuation mechanisms serve as intermediaries between the control system and retention arms, providing controlled activation that filters out vibration effects. The actuation mechanism translates control commands into deliberate retention arm movement while ignoring vibrational disturbances.
3Reliability
If container is retained during flight, then safety is improved, but aerodynamic loading creates instability
Solution Approach 1:
Fixed sway brace arms act as counterbalancing structures that offset aerodynamic loading effects on the retained container. These braces provide opposing forces that maintain container stability during flight while allowing safe retention.
Solution Approach 2:
The system merges fixed sway brace arms with mechanically actuated retention arms to create a combined system that simultaneously provides structural stability and controlled release capability, resolving the conflict between safety and stability.
Data Source
AI summary
A container suspension and release system provides at least one ejector assembly having a carry position and a deployed position. The ejector assembly includes an actuator configured to extend ejector assembly from the carry position to the deployed position, and a retention assembly. The retention assembly employs a bracket attached to the actuator and a fixed sway brace extending from the bracket. A left retention arm is pivotally attached to the bracket and a right retention arm is pivotally attached to the bracket, with the left and right retention arms configured to rotate in opposite directions. A rotation activation mechanism is provided to rotate the left and right retention arms in the deployed position. An energy source connected to the actuator to provides energy to actuate the at least one ejector assembly.