Ground Flammable Fluid Drainage Testing with Pressure and Vibration
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Solution Overview
Problem
Existing flammability tests for aircraft components are prohibitively expensive and time-consuming, typically requiring test flights to ensure fluid tightness, which is not cost-effective.
Innovation Solution
A ground-based apparatus and method for flammable fluid drainage testing that includes a spine, wall structures, a nozzle, vacuum device, and shaker platform to simulate flight conditions, allowing for controlled fluid application, pressure differentials, and vibration to test aircraft components for fluid leaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If test flights are used to perform flammable fluid drainage testing, then the testing can be performed under actual flight conditions, but the cost and time consumption become prohibitively expensive
Solution Approach 1:
The patent creates a ground-based test system that replicates flight conditions through simulated pressure differentials and vibration environments. The test chamber mimics the pressure conditions aircraft experience during flight, while the vibration table reproduces aerodynamic vibrations, allowing accurate fluid drainage testing without actual flight
Solution Approach 2:
The patent replaces the mechanical system of actual flight testing with a ground-based simulated environment. Instead of physically flying the aircraft to create test conditions, the system uses controlled pressure differentials and vibration tables to replicate the necessary flight conditions for testing
2Adaptability or versatility
If traditional test flight methods are used, then comprehensive flight conditions can be achieved, but the testing process becomes lengthy and costly
Solution Approach 1:
The patent divides the complex flight condition simulation into separate controllable components: pressure differential is controlled independently through the test chamber, vibration is applied separately through the vibration table, and fluid application is managed through the reservoir system. This segmentation allows each parameter to be optimized and adjusted independently, improving testing efficiency
Solution Approach 2:
The patent enables independent adjustment of test parameters including pressure differential magnitude, vibration frequency and amplitude, and fluid flow rate. These parameter changes can be made quickly without requiring actual flight, allowing rapid iteration and optimization of test conditions
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
Enables cost-effective and rapid ground testing of aircraft components, reducing the need for test flights and allowing for immediate design adjustments, thereby improving efficiency and reducing costs.
Implementation Method 1
a vacuum device configured to create a pressure differential between the first chamber and the second chamber
Implementation Method 2
a shaker platform configured to apply an excitation input to the coupon
Implementation Method 3
a nozzle device configured to spray a fluid into the first chamber and onto the coupon
Data Source
AI summary
Methods and apparatuses for performing ground-based flammable fluid drainage testing are provided. An apparatus for performing flammable fluid drainage testing on a test article includes a spine configured to receive a coupon; a first wall structure configured to engage the spine to form a first chamber; a second wall structure configured to engage the spine to form a second chamber opposite the first chamber; a nozzle device configured to spray a fluid into the first chamber and onto the coupon; a vacuum device configured to create a pressure differential between the first chamber and the second chamber; a leg mounting the spine to a base; and a shaker platform configured to apply an excitation input to the coupon.