Aircraft Fuselage Mounting Assembly With Flexible Connecting Elements
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Solution Overview
Problem
Current mounting assemblies for aircraft components are cumbersome, labor-intensive, and heavy, with high requirements for drill holes and load-carrying capacity, and fail to effectively compensate for mechanical movements and thermal expansion, which can lead to structural damage during flight maneuvers.
Innovation Solution
A mounting assembly comprising an elongated base element and a holding rail connected by framework-like connecting elements, allowing for decoupling of thermal and mechanical loads, with the base element and holding rail made from matching or differing materials to optimize load distribution and flexibility, and featuring geometric pre-curvature for predictable deformation behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional mounting assemblies with multiple holding devices are used to ensure adequate load carrying capacity, then the load carrying capacity is improved, but the weight of the mounting assembly increases
Solution Approach 1:
The mounting assembly is divided into functionally independent elements: a base element for structural attachment to the fuselage, a holding rail for component mounting, and connecting elements for their interconnection. This segmentation allows each element to be optimized independently - the base element can be lightweight while the holding rail provides the necessary mounting capacity, reducing overall weight while maintaining strength.
Solution Approach 2:
The mounting assembly utilizes composite construction with the base element and holding rail made from different materials optimized for their specific functions. The base element may use lightweight composite materials for fuselage attachment, while the holding rail uses materials optimized for mounting capacity, achieving weight reduction without compromising load carrying capacity.
2Strength
If traditional mounting assemblies with multiple drill holes are used to provide adequate load carrying capacity, then the load carrying capacity is improved, but the complexity of manufacturing and the number of drill holes increases
Solution Approach 1:
The base element and holding rail are merged into a single integrated mounting assembly unit that attaches to the fuselage as one component. This consolidation eliminates the need for multiple separate mounting operations and drill holes, reducing manufacturing complexity while maintaining the load carrying capacity provided by the integrated structure.
Solution Approach 2:
The base element is pre-formed with integrating features and pre-attached to the holding rail during manufacturing, so that upon installation to the fuselage, the complete mounting assembly is already configured and ready for component attachment. This preliminary preparation eliminates the need for on-site drilling and complex assembly operations.
3Stability of the object's composition
If rigid mounting assemblies are used to ensure stable component attachment, then the stability of component mounting is improved, but the ability to compensate for thermal expansion and mechanical movement is reduced
Solution Approach 1:
The connecting elements are designed with dynamic characteristics that allow them to flex and deform within certain limits, enabling the mounting assembly to adapt to thermal expansion and mechanical movements of the fuselage. This dynamic capability maintains stable component mounting while accommodating structural changes, preventing destruction of the mounting assembly.
Solution Approach 2:
The connecting elements are designed with specific geometric parameters and material properties that allow controlled deformation under thermal and mechanical loads. By optimizing parameters such as cross-sectional geometry, material elasticity, and connection stiffness, the assembly maintains stability while compensating for fuselage movements and thermal effects.
4Strength
If traditional mounting assemblies with multiple holding devices are used to ensure adequate load carrying capacity, then the load carrying capacity is improved, but the labor and time required for installation increases
Solution Approach 1:
The base element and holding rail are combined into a single pre-assembled unit that attaches to the fuselage as one component, eliminating the need for multiple separate installation operations. This merging of functions into a single assembly operation significantly reduces installation time and labor requirements while maintaining adequate load carrying capacity.
Solution Approach 2:
The holding rail is pre-connected to the base element during manufacturing, so that upon installation to the fuselage, the complete mounting assembly is ready for immediate use. This preliminary assembly eliminates the need for on-site drilling, alignment, and multiple fastening operations, dramatically improving installation productivity.
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 solution provides a lightweight, flexible mounting system that reduces the need for drill holes, enhances load-carrying capacity, and automatically compensates for mechanical and thermal movements, preventing structural damage and offering significant weight savings and improved manufacturing efficiency.
Implementation Method 1
thermal contraction and expansion movements of the aircraft and of the components to be mounted
Implementation Method 2
flexural and torsional deformation occurring during flight operations
Data Source
AI summary
A mounting assembly for the mounting of components in a body of a vehicle comprises at least one base element, at least one holding rail and connecting elements. The base element is designed to be arranged on the body of the vehicle. The holding rail is designed for mounting the components, and the base element and the holding rail are connected by the connecting elements so as to be spaced apart from each other.