Aircraft Pylon Wing Assembly Compact Rear Fastening
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Solution Overview
Problem
The existing pylon assembly with aircraft wings has a significant bulk due to the distance between the wing and the upper spar, which cannot be further reduced by the specific shape of the triangular connecting rods in the rear fastening system, necessitating a more compact design.
Innovation Solution
A rear fastening system comprising a pair of vertical shackles articulated between the primary structure and a first shoe fastened to the wing, and a pair of transverse shackles articulated between the primary structure and a second shoe, both connected via clevis-type connections, reducing the bulk and allowing the pylon to be closer to the wing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If triangular connecting rods are used in the rear fastening system, then the fastening function is achieved, but the bulk of the assembly cannot be reduced further
Solution Approach 1:
The invention divides the single complex triangular connecting rod into multiple simpler components: vertical shackles, transverse shackles, and connecting links. This segmentation allows each component to have a simpler, more standardized shape while collectively achieving the same fastening function, thereby reducing the overall bulk of the assembly.
Solution Approach 2:
The invention employs a nested arrangement where vertical shackles and transverse shackles are interconnected through connecting links, forming a compact multi-level structure. The vertical shackles are positioned at one level, connected via links to transverse shackles at another level, creating a space-efficient nested configuration that reduces the assembly bulk.
2Ease of operation
If the pylon is positioned farther from the wing to accommodate the rear fastening system, then the fastening function is achieved, but the aerodynamic performance deteriorates
Solution Approach 1:
By segmenting the fastening system into vertically and transversely arranged shackles connected by links, the invention creates a compact multi-dimensional structure that fits within the available space between the pylon and wing, eliminating the need for excessive clearance and thereby preserving aerodynamic performance.
Solution Approach 2:
The invention transitions from a planar arrangement to a three-dimensional nested structure by stacking vertical and transverse shackles at different levels and connecting them through links. This dimensional transformation allows the fastening system to occupy space more efficiently in the vertical-transverse-depth directions, reducing the required distance from the wing.
Data Source
AI summary
An assembly of a pylon and of a wing of an aircraft, the pylon including a primary structure with a rear face and an upper spar. The assembly includes a rear fastening system including a pair of vertical shackles articulated between the rear face of the primary structure and a first shoe fastened to the wing, wherein the shackles are fastened to the primary structure by a clevis-type connection, and a pair of transverse shackles articulated between the rear face of the primary structure and a second shoe fastened to the wing, wherein the shackles are fastened to the primary structure by a clevis-type connection. With such an assembly, the bulk of the rear fastening system is reduced.