Inflatable H-Shaped Drone Structure for Stable Flight
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Solution Overview
Problem
Existing remote-controlled unmanned aircraft with inflatable structures face issues of complex and costly manufacturing due to star-shaped designs, leading to motor misalignment and instability in flight, which complicates maintenance and reduces flight stability and maneuverability.
Innovation Solution
A remote-controlled unmanned aircraft with a flexible and inflatable main structure featuring a simple H-shaped design, comprising a support frame and two orthogonal inflatable arms, reducing manufacturing complexity, minimizing seams, and allowing for precise motor alignment, thus enhancing stability and ease of maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a star-shaped inflatable structure is used, then the drone can be folded and stored compactly, but the structure becomes complex and expensive to manufacture
Solution Approach 1:
The star-shaped structure is divided into multiple separate inflatable arms (first inflatable arm, second inflatable arm, third inflatable arm, fourth inflatable arm) that can be independently manufactured and assembled, reducing overall structural complexity while maintaining foldability
Solution Approach 2:
The inflatable arms can be folded and nested together during storage, allowing the drone to be compactly stored while maintaining the complex star-shaped configuration during flight operations
2Ease of manufacture
If multiple seams are used in the inflatable structure, then the structure can be assembled, but manufacturing precision decreases due to tolerance accumulation
Solution Approach 1:
The structure uses only two main seams connecting the inflatable arms to the support chassis, significantly reducing the number of seams compared to traditional multi-piece constructions, thereby minimizing tolerance accumulation and improving motor alignment precision
Solution Approach 2:
Multiple structural components are merged into integrated inflatable arms that maintain precise motor mounting positions, reducing the need for multiple separate pieces and seams while ensuring accurate motor alignment
3Ease of manufacture
If motors are mounted on inflatable arms with seams, then the structure can be assembled, but motor alignment becomes imprecise leading to flight instability
Solution Approach 1:
The inflatable arms are designed with locally reinforced regions and precisely positioned motor mounting areas that maintain high dimensional accuracy at critical motor mounting locations, ensuring stable motor alignment while allowing flexible assembly elsewhere
Solution Approach 2:
The structure separates the inflatable arms into distinct segments with controlled seams positioned away from motor mounting areas, isolating the effects of manufacturing tolerances to non-critical regions and preserving motor alignment stability
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 H-shaped structure reduces manufacturing costs, minimizes motor misalignment, improves flight stability and maneuverability, and allows for easy replacement of components, increasing the aircraft's speed, endurance, and autonomy while maintaining structural integrity.
Implementation Method 1
The main structure includes an outer protective shell and an expandable, inflatable inner shell, similar to an inner tube, inflated using a compressed air cartridge, for example
Data Source
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AI summary
A remote-controlled unmanned aircraft comprising at least two motors (5) configured to allow the aircraft to fly, and one main structure (2) for supporting the motors (5); the main structure (2) being flexible and inflatable such that the main structure (2) can be folded between a storage position and an operational position. The aircraft is characterised in that the main structure (2) comprises a support frame (3) extending longitudinally between an upstream end (31) and a downstream end (32) along a longitudinal axis (X), and at least two inflatable arms (4) connected to the support frame (3) at the upstream end (31) and the downstream end (32), respectively, each inflatable arm (4) extending orthogonally to the support frame (3) so as to form a main H-shaped structure (2).