Phase Transforming Cellular Matrix Runway Mat Design
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Solution Overview
Problem
The existing AM2 matting technology for temporary runways is heavy, cumbersome, and laborious to install, with limited flexibility and transportability, and it typically survives only between 750-2050 landing and takeoff cycles before failure.
Innovation Solution
A deployable impact-absorbing mat made from phase-transformable cellular matrix (PXCM) tiles, which utilize bistable or metastable mechanisms to achieve discrete phase transformations, allowing for increased energy absorption and durability, and can be easily assembled and disassembled for efficient transport and deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional AM2 aluminum panels are used for temporary runway matting, then the mat can withstand repeated landing and takeoff cycles, but the panels become heavy and laborious to install and transport
Solution Approach 1:
The patent employs composite materials consisting of aluminum panels combined with energy-absorbing cellular foam core structures. This composite construction reduces the overall weight compared to solid aluminum panels while maintaining structural integrity and durability under repeated aircraft passes. The foam core provides both weight reduction and energy absorption capabilities.
Solution Approach 2:
The patent utilizes porous cellular foam materials as the core structure between aluminum panels. These porous materials provide weight reduction while maintaining mechanical properties necessary for runway matting applications. The cellular structure allows for energy absorption during aircraft landing and takeoff cycles.
2Stability of the object's composition
If traditional AM2 aluminum panels are used for temporary runway matting, then the mat provides structural stability, but it becomes cumbersome and difficult to transport and deploy
Solution Approach 1:
The runway matting system is divided into modular panel segments that can be easily assembled and disassembled. Each panel is a self-contained unit with standardized connection mechanisms, allowing rapid deployment and removal. The segmentation enables panels to be handled more easily during transport and installation while maintaining structural stability when assembled into the complete matting system.
3Ease of manufacture
If traditional AM2 panels with hinge-pipe connections are used, then the mat can be assembled, but the connections become primary failure points after repeated passes
Solution Approach 1:
The patent integrates the connection mechanisms directly into the panel structures themselves, merging the panel and connection functions into a unified component. This eliminates separate hinge-pipe connections that were prone to failure, as the integrated design creates stronger, more reliable joints that are part of the panel's inherent structure rather than附加 components.
4Force
If heavy AM2 panels are used for temporary runway matting, then the mat can support aircraft loads, but a large number of aircraft are required to transport the matting to locations
Solution Approach 1:
The composite construction with aluminum panels and cellular foam core provides high strength-to-weight ratio. The aluminum panels maintain load-bearing capacity to support aircraft weights, while the lightweight foam core reduces overall panel weight, decreasing the number of aircraft needed for transport while preserving structural integrity under aircraft loads.
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 PXCM mat technology significantly enhances the durability and ease of deployment of temporary runway mats, capable of surviving more than 2500 landing and takeoff cycles while being lightweight and flexible, thus addressing the limitations of the existing AM2 matting technology.
Implementation Method 1
Phase transformations are initiated by introducing changes to the geometry of the unit cells that define these materials while keeping topology constant. Phase transformations may be introduced into the novel cellular materials via bistable/metastable compliant mechanisms to form the microstructure of cellular materials.
Implementation Method 2
A deployable impact-absorbing mat, such as a temporary aircraft runway mat, made from a novel cellular material exhibiting discrete phase transformations. Phase transformations are initiated by introducing changes to the geometry of the unit cells that define these materials while keeping topology constant.
Data Source
AI summary
A flexible mat system, including a plurality of base platforms, each respective base platform having a first pattern of phase transforming columns and voids extending from a respective flat member, and a plurality of plane-engaging runway platforms, each respective plane-engaging runway platform having a second, reversed pattern of phase transforming columns and voids extending from a respective flat member such that each respective plane-engaging runway platform is lockingly engagable to a respective base platform to yield a landing segment with parallel top and bottom flat members. Each respective base platform is an aluminum/steel composite. Each respective phase transforming column is further comprised of a plurality of stacked operationally connected phase transforming cellular members. Each respective cell further comprises six hexagonally spaced support members defining six hexagonally arrayed sides, with two opposing sides define x-shaped struts extending between adjacent support members. Remaining sides define parallel struts extending between adjacent support members. Each respective phase transforming cellular member can shift from a first stable configuration to a second stable configuration in response to an applied load.