Electronic Release System for Aircraft Ejection Seats
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Solution Overview
Problem
Ejection systems in high-performance aircraft are burdened by mechanical linkages that add weight and cost, and fail to efficiently release occupants from the ejection seat across varying aircraft conditions.
Innovation Solution
An electronic release system that uses a controller to activate a plurality of release devices, allowing for the simultaneous and controlled release of pins, including lap belts and leg restraints, reducing weight and improving efficiency by eliminating the need for mechanical linkages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical linkages are used to release pins from ejection seat, then reliable release function is achieved, but weight and device complexity increase
Solution Approach 1:
The patent replaces mechanical linkages with an electronic release system that uses electrical signals to actuate release devices. The controller receives an ejection signal and commands the release devices to retract the pins, eliminating the need for complex mechanical transmission components while maintaining reliable release function.
Solution Approach 2:
The patent extracts and removes the mechanical linkage components from the ejection seat system. By eliminating these heavy mechanical transmission elements and replacing them with lightweight electronic actuators, the system achieves weight reduction while preserving the essential pin release function.
2Reliability
If mechanical linkages are used to release pins from ejection seat, then reliable release function is achieved, but device complexity and cost increase
Solution Approach 1:
The patent substitutes complex mechanical linkages with a simplified electronic control system. The controller directly commands release devices through electrical signals, eliminating the need for mechanical gears, linkages, and transmission components, thereby reducing device complexity and manufacturing cost.
Solution Approach 2:
The patent changes the operational parameter from mechanical force transmission to electrical signal control. This parameter change fundamentally simplifies the system architecture, reducing the number of moving parts and mechanical interfaces while improving reliability through electronic control.
3Speed
If pins are released simultaneously during ejection, then rapid occupant separation is achieved, but control precision over individual pin release timing is reduced
Solution Approach 1:
The patent segments the pin release function into individually controllable release devices, each capable of being actuated independently or in coordinated groups. This segmentation allows the system to achieve rapid simultaneous release when needed while retaining the capability for precise individual pin control through the controller's selective actuation commands.
Solution Approach 2:
The patent implements a dynamic release control system where the controller can adaptively command different release sequences based on flight conditions. The system can transition between simultaneous release for rapid separation and staged release for controlled scenarios, providing both speed and precision as needed.
Data Source
AI summary
An electronic release system for an aircraft ejection system may comprise: a controller; a plurality of release devices in operable communication with the controller; a plurality of pins, each pin in the plurality of pins operably coupled to a release device in the plurality of release devices, the controller configured to: receive an indication that an ejection event from an aircraft has been initiated, command activation of the plurality of release devices, and in response to commanding the activation, releasing the plurality of pins from an ejection seat.