Universal Ejection Sequencer With Pin-Based Model Identification
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Solution Overview
Problem
Ejection seat systems require specific sequencers and wire harness configurations for each aircraft and seat model, leading to increased costs and complexity due to the need for multiple unique parts and limited compatibility.
Innovation Solution
A universal sequencer and wire harness assembly that identifies the ejection seat and aircraft models through pin configurations, allowing for customizable ejection sequences and timetables to be implemented, enabling a single part to be used across multiple systems and facilitating easy replacement and testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple unique sequencers are used for different ejection seat and aircraft models, then each model receives customized ejection sequences, but device complexity and cost increase due to multiple unique parts
Solution Approach 1:
The patent implements a universal sequencer that can be used across multiple ejection seat and aircraft models by incorporating a pin configuration interface that automatically identifies the specific model combination. The sequencer reads the pin configuration to determine the appropriate ejection sequence, allowing a single multi-functional device to replace multiple model-specific sequencers, thereby reducing device complexity while maintaining customized performance.
2Reliability
If multiple unique sequencers are used for different models, then each model gets optimized timing, but manufacturing cost increases due to higher quantity of unique parts
Solution Approach 1:
The universal sequencer incorporates model identification through pin configuration detection, allowing a single manufactured unit to serve multiple models. This eliminates the need to manufacture separate sequencers for each model combination, significantly reducing manufacturing costs while maintaining optimized timing for each specific configuration through software-based sequence selection.
3Manufacturing precision
If model-specific sequencers are used, then ejection sequences are precisely tailored, but compatibility across different systems is limited
Solution Approach 1:
The sequencer uses a pin configuration interface that can detect and adapt to different model combinations, enabling a single device to provide precisely tailored ejection sequences for multiple models. This approach maintains manufacturing precision for each model while significantly improving compatibility across different ejection seat and aircraft model combinations.
4Device complexity
If a universal sequencer is used across multiple models, then part quantity and cost are reduced, but the complexity of identifying and configuring the correct sequence increases
Solution Approach 1:
The system performs model identification through pin configuration detection during the initialization phase, before the ejection sequence is executed. This preliminary action of reading the pin configuration and selecting the appropriate sequence ensures that the correct customized timing is applied without requiring complex real-time adjustments during the actual ejection process.
Data Source
AI summary
A universal sequencer for an ejection seat may comprise a connector defining a plurality of pin receptacles. A controller may be electrically coupled to the connector. A tangible, non-transitory may be memory configured to communicate with the controller. The tangible, non-transitory memory has instructions stored thereon that, in response to execution by the controller, cause the controller to perform operations, which may comprise determining an ejection seat or aircraft model and determining an ejection sequence based on the ejection seat or aircraft model determination.