Sealed Inflatable Wing Structure for Low-Drag Parafoil Flight
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Solution Overview
Problem
Existing parafoil designs, such as ram-air parachutes and paragliders, suffer from inefficiencies due to open nose inlets that cause turbulence and drag, limiting their glide ratio and overall performance.
Innovation Solution
A fully sealed inflatable wing design that utilizes an air pump to inflate and deflate, eliminating open inlets and incorporating internal structures like mini-ribs and winglets to enhance aerodynamics and lift.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If open nose inlets are used in parafoil designs, then air can enter to inflate the structure, but turbulence and drag are caused, limiting glide ratio and performance
Solution Approach 1:
The patent removes the open nose inlet from the parafoil structure, extracting the harmful element that causes turbulence and drag. Instead, a sealed nose design is implemented with alternative inflation methods, eliminating the source of aerodynamic problems while maintaining inflation capability through sealed crossports and internal valves.
Solution Approach 2:
The patent employs pneumatic systems including sealed crossports, internal inflation valves, and air pockets to achieve inflation without open inlets. The sealed crossports allow controlled air transfer between cells, while internal valves regulate inflation, maintaining aerodynamic efficiency through pressure-based inflation mechanisms rather than open inlet structures.
2Productivity
If a sealed inflatable wing design is implemented, then drag is reduced and lift is increased, but device complexity increases due to internal structures and inflation systems
Solution Approach 1:
The wing is divided into multiple sealed cells with individual inflation control. Each cell can be independently managed through the inflation system, allowing for controlled air distribution. This segmentation enables the complex sealed structure to function as multiple simpler units working together, improving glide ratio while managing complexity through modular design.
Solution Approach 2:
The patent incorporates dynamic elements including adjustable inflation valves and flexible sealed structures that can adapt to flight conditions. The inflation system can dynamically adjust air pressure and distribution within cells, allowing the wing to optimize its aerodynamic properties during flight while managing structural complexity through active control mechanisms.
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 sealed inflatable wing achieves reduced drag, increased lift, and improved glide ratio by maintaining consistent air pressure and eliminating turbulence, while being portable and compact for storage.
Implementation Method 1
A fully sealed inflatable wing design that utilizes an air pump to inflate and deflate, eliminating open inlets and incorporating internal structures like mini-ribs and winglets to enhance aerodynamics and lift
Implementation Method 2
A fully sealed inflatable wing design that utilizes an air pump to inflate and deflate, eliminating open inlets and incorporating internal structures like mini-ribs and winglets to enhance aerodynamics and lift
Data Source
AI summary
An unmanned aerial vehicle comprising an inflatable wing having a top portion connected to a bottom portion to create a seal, an inflation valve, and internal to the seal created by the top portion and the bottom portion a set of internal cells, and a vehicle portion connected to the inflatable wing.