Aircraft Door Seal Leak Testing With External Suction Rigging
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Solution Overview
Problem
Current methods for testing aircraft door seals are either expensive and time-consuming, requiring test flights or disassembly of interior components for clamping, which are not practical for frequent or economical leak detection.
Innovation Solution
A leak detection device that engages the outside of the aircraft door, using suction cups and extendable legs to tighten the seal without pressurizing the cabin or disassembling interior components, and includes gasket channels to segmentally test for leaks from outside the aircraft.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If test flights are used to pressurize the cabin and check for air leaks, then the seal integrity can be tested, but the process becomes expensive and time-consuming
Solution Approach 1:
The invention extracts the leak detection function from the complex test flight process by using a portable testing device that applies suction directly to the door seal, isolating the testing function from the need for full aircraft pressurization and flight testing
Solution Approach 2:
The portable testing device acts as an intermediary between the door seal and the detection system, using a suction cup and vacuum pump to create controlled negative pressure that simulates flight conditions without requiring actual flight or full cabin pressurization
2Reliability
If the aircraft is disassembled and clamps are rigged to the interior to test the seal, then the leak detection can be performed, but the process becomes complex and time-consuming
Solution Approach 1:
The invention removes the need for interior disassembly and complex clamp rigging by extracting the testing function to the exterior of the aircraft, where a simple suction cup can be applied directly to the door surface
Solution Approach 2:
Instead of approaching the seal from the interior with clamps and disassembly, the invention inverts the approach by applying the suction cup to the exterior surface of the door, simplifying the testing procedure while achieving the same seal verification
3Reliability
If the aircraft is disassembled to rig clamps for testing, then the seal can be tested, but the process becomes expensive and time-consuming
Solution Approach 1:
The invention extracts the testing function from the interior disassembly process and relocates it to the exterior, eliminating the need for time-consuming disassembly and reassembly of interior components
Solution Approach 2:
The suction cup is designed to be pre-configured and ready for immediate application to the door exterior, eliminating the need for preliminary disassembly and setup work that would otherwise be required before testing can begin
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 frequent, simplified, and cost-effective leak testing of aircraft door seals without the need for test flights or interior disassembly, allowing for precise identification of leak locations and improved seal integrity.
Implementation Method 1
a suction cup configured to suction an outer surface of the aircraft door
Data Source
AI summary
Systems and methods for leak detection of aircraft doors. One embodiment is an apparatus for leak testing a seal between an aircraft door and a fuselage of an aircraft. The apparatus includes a structural frame that includes a suction cup configured to suction an outer surface of the aircraft door. The structural frame further includes legs to extend in length to push the structural frame away from the fuselage and cause the suction cup to pull the aircraft door toward an outside of the aircraft to tighten the seal between the aircraft door and the fuselage of the aircraft.