Aircraft Buoyancy System False Trigger Prevention
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Solution Overview
Problem
Current emergency buoyancy systems in aircraft are prone to untimely and undesired inflation, leading to inconvenient immobilization and potential safety risks due to high humidity or false triggering.
Innovation Solution
A method and system that require confirmation from at least two immersion sensors and manual arming to deploy floats, with a delay in deployment if only one sensor triggers, ensuring that float deployment is only initiated when both sensors confirm immersion and the arming means is activated, thereby reducing false activations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a single immersion sensor is used to trigger float deployment, then the response time is fast, but false triggering occurs due to high humidity or sensor defects
Solution Approach 1:
The system uses feedback from multiple immersion sensors (at least two) to confirm the deployment condition before activating the float. This cross-validation mechanism ensures that a single sensor defect or false signal due to humidity does not trigger unnecessary deployment, while still maintaining fast response when both sensors agree on the immersion condition.
Solution Approach 2:
The arming means requires preliminary manual activation before the immersion sensors can trigger deployment. This preliminary action ensures that the system is only sensitive to immersion signals when the aircraft is in a appropriate state (e.g., over water at correct speed), preventing false triggering during normal flight operations while maintaining rapid response when armed.
2Reliability
If manual arming is required before automatic deployment, then false triggering is prevented, but the system complexity increases
Solution Approach 1:
The arming means serves multiple functions: it activates the deployment means, monitors aircraft parameters (speed, altitude), and determines whether the aircraft is over water. This multi-functionality reduces the need for separate control systems while maintaining reliable prevention of false triggering through comprehensive condition checking.
3Ease of operation
If the deployment means remains activated after predetermined time when single sensor triggers, then pilot can cancel false deployment, but deployment delay occurs in genuine emergencies
Solution Approach 1:
The deployment triggering is segmented into different pathways: immediate deployment when two sensors agree on immersion, and delayed deployment with pilot confirmation option when only one sensor triggers. This segmentation allows the system to optimize for speed in confirmed emergencies while providing pilot control for uncertain situations, resolving the contradiction between rapid response and pilot authority.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach significantly reduces the risk of untimely float deployment, ensuring that the buoyancy system is only activated in confirmed emergency situations, enhancing safety and preventing unnecessary aircraft immobilization.
Implementation Method 1
a buoyancy system comprising at least one float (3) and a deployment means (30) for deploying the float
Data Source
Figure 1~2
Figure 3
AI summary
The method involves providing an engagement unit (5) in a buoyancy system (2) for activating a deployment unit (30) of float (3), where the system has immersion sensors (20) for issuing order for automatic deployment of the float to the deployment unit. The float is deployed when the engagement unit activates the deployment unit and an event contained in pre-established list of events has occurred, where the list has following events such as the sensors signaling immersion to the deployment unit by sending the order, and the deployment unit remains activated at the end of preset time period. An independent claim is also included for a buoyancy system for an aircraft.