Bonded Airframe Assembly for Lightweight UAV Structures
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Solution Overview
Problem
Design, manufacturing, and assembly of aerial vehicles are complex, costly, and difficult, necessitating a need for lighter, stiffer, and more cost-effective structures.
Innovation Solution
An aerial vehicle airframe design comprising bonded components such as struts, bulkheads, wing sections, and motor mounts formed from materials like carbon fiber, which are integrated to reduce weight and complexity while enhancing stiffness and assembly efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional manufacturing and assembly methods are used for aerial vehicles, then structural strength and reliability can be maintained, but weight increases, complexity increases, and manufacturing cost increases
Solution Approach 1:
The patent integrates multiple airframe components (struts, bulkheads, wing sections, motor mounts) into a single bonded assembly structure. This merging of components reduces the overall number of parts, simplifies the airframe design, and decreases weight while maintaining structural integrity through adhesive bonding.
Solution Approach 2:
The patent employs composite materials in the construction of airframe components, combining different materials to achieve optimal strength-to-weight ratios. The use of composite materials allows the structure to be lighter while maintaining or improving structural strength and stiffness.
2Ease of manufacture
If traditional manufacturing methods are used, then structural strength can be ensured, but manufacturing cost and assembly complexity increase
Solution Approach 1:
The patent combines multiple discrete components into an integrated bonded assembly, reducing the quantity of separate parts that need to be manufactured, inventoried, and assembled. This integration simplifies the manufacturing process and reduces the overall component count while maintaining structural requirements.
3Strength
If multiple discrete components are used in airframe construction, then structural strength can be maintained, but assembly complexity and manufacturing cost increase
Solution Approach 1:
The patent merges multiple structural components into a bonded assembly where adhesive bonds connect struts, bulkheads, wing sections, and motor mounts into an integrated structure. This reduces assembly complexity by eliminating numerous mechanical fasteners and joints while maintaining or enhancing structural strength through the bonded connections.
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 design achieves a lightweight, robust, and cost-effective airframe with improved assembly and maintenance capabilities, reducing the number of components and facilitating easier fabrication.
Implementation Method 1
the bonded assembly is adhered together using adhesive
Data Source
Figure 1A
Figure 1B
Figure 1C
AI summary
An airframe design may include a bonded frame or assembly, and one or more components (645) that may be removably attached to the bonded frame. The bonded frame may include struts (102), central bulkheads (106), a tail section, a plurality of wing sections, and motor mounts (650) that are adhered together using adhesive. The one or more attachable components (645) may include a forward fuselage (640), motors (756), propellers (860), motor pod fairings (862), stabilizer fins, and landing gear (972) that are attached using fasteners. The bonded frame may reduce the number of parts of the airframe design and may also reduce complexity, cost, and weight, while also increasing stiffness and strength. Further, the various attachable components (645) may facilitate fabrication, assembly, and maintenance of an aerial vehicle having the airframe design.