Non-Explosive Flight Data Recorder Ejection via Gas Pressure
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Solution Overview
Problem
Conventional ejection devices for flight data recorders require handling of explosive substances, leading to high costs and decreased readiness due to stringent dispatch, storage, and installation requirements, necessitating specialized personnel and safety measures.
Innovation Solution
A non-explosive ejection device using a gas pressure generator to separate the flight data recorder, allowing for safe and cost-effective handling, transportation, and installation without specialized personnel or safety requirements, with energy absorption and diversion in case of faults or accidents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If explosive cartridges or squibs are used to separate the flight data recorder, then operational safety and reliability are improved, but handling costs and safety requirements increase significantly
Solution Approach 1:
The invention extracts and removes the explosive substances from the ejection device, replacing them with a non-explosive gas pressure generator. This eliminates the need for specialized handling, storage, and dispatch procedures while maintaining the ejection function through a simpler, safer mechanism that uses conventional electrical components instead of explosive cartridges or squibs.
Solution Approach 2:
The invention replaces the chemical-mechanical system (explosive cartridges converting chemical energy to mechanical force) with an electrical-pneumatic system (gas pressure generator converting electrical energy to pneumatic force). This substitution eliminates explosive substances while achieving the same ejection function through a controllable, safe, and cost-effective mechanism.
2Productivity
If explosive substances are used in the ejection device, then ejection function is achieved, but dispatch and storage restrictions increase
Solution Approach 1:
The invention removes explosive substances from the system entirely, replacing them with a gas pressure generator that uses conventional electrical components. This allows the device to be dispatched, stored, and handled like any standard electronic component without special permits, safety instructions, or restricted procedures.
Solution Approach 2:
The invention changes the fundamental operating parameter from chemical energy (explosives) to electrical energy (gas pressure generator). This parameter change transforms the device from one requiring explosive substance regulations to one using standard electrical components, enabling free dispatch and storage.
3Reliability
If explosive cartridges are used for separation, then ejection reliability is maintained, but costs for handling and safety measures increase
Solution Approach 1:
The invention replaces the explosive-based mechanical system with an electrical-pneumatic system using a gas pressure generator. This substitution maintains ejection reliability through controlled gas pressure actuation while eliminating costs associated with explosive substance handling, specialized personnel, safety permits, and restricted storage facilities.
Solution Approach 2:
The invention uses a gas pressure generator to create pneumatic pressure for actuating the ejection mechanism. This pneumatic approach replaces explosive cartridges, providing reliable ejection force through a controllable, cost-effective system that uses conventional electrical and pneumatic components instead of expensive explosive substances.
4Force
If explosive substances are used, then ejection force is sufficient, but safety risks and special personnel requirements increase
Solution Approach 1:
The invention extracts and removes all explosive substances from the ejection device, replacing them with a gas pressure generator. This eliminates safety risks associated with explosive handling, storage, and accidental activation while maintaining sufficient ejection force through controlled pneumatic pressure acting on the ejection spindle.
Solution Approach 2:
The invention introduces a gas pressure generator as an intermediary between the electrical trigger signal and the mechanical ejection action. This intermediary converts electrical energy to pneumatic pressure, which then actuates the ejection spindle, providing sufficient force while eliminating direct use of explosive substances and their associated safety risks.
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
The solution eliminates the need for explosive handling, ensuring safe operation, reduced costs, and enhanced readiness, while maintaining operational reliability and safety by using a gas pressure generator to separate the flight data recorder without harmful effects on people or objects.
Implementation Method 1
an integrated gas pressure generator (4) which, upon being triggered electrically, generates a gas pressure for actuating the ejection spindle (8)
Implementation Method 2
a valve (6) which is prestressed in the disengagement device (3) by a spring (5)
Data Source
AI summary
An ejection device for a flight data recorder includes an ejection spindle, which can be detachably connected to the flight data recorder by means of a bayonet coupling. The bayonet coupling can be released by means of force application by the ejection spindle, a disengaging device, which has a compression-resistant housing and into which the ejection spindle can be screwed, and a gas pressure generator, a valve, which is located within the disengaging device and which permits a flow connection between the outlet of the gas pressure generator and the ejection spindle when the ejection spindle is screwed in and which disables the flow connection between the outlet of the gas pressure generator and the ejection spindle when the ejection spindle is unscrewed.