Aircraft Engine Pylon Force Transfer via Segmented Blade
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Solution Overview
Problem
Current aircraft propulsion systems face challenges in efficiently transferring forces from the engine to the wing, particularly when the engine is installed in close vertical proximity to the wing.
Innovation Solution
The proposed assembly includes a wing with specific spar and panel configurations, and an engine pylon with a blade and fastening lugs, along with shackles and fittings that allow for direct force transmission to the wing panels, enhancing force transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the engine is installed in close vertical proximity to the wing, then the aircraft structure is compact and space-efficient, but the force transfer from engine to wing becomes less efficient
Solution Approach 1:
The engine pylon structure is segmented into distinct functional components: a primary pylon body, a blade element extending rearward, and fastening lugs with bore configurations. This segmentation allows each component to optimize force transfer in specific directions while maintaining compact overall dimensions.
Solution Approach 2:
The patent introduces a blade element extending in the rearward direction (longitudinal dimension) and fastening lugs with bores oriented in multiple directions (vertical and longitudinal). This multi-dimensional force transfer path compensates for the reduced vertical spacing, enabling efficient force transmission despite compact vertical arrangement.
2Reliability
If conventional engine attachment means are used with thrust-force-reacting assembly, then the engine can be securely fastened to the pylon, but the force transfer to the wing structure is not optimized
Solution Approach 1:
The blade element acts as an intermediary component between the engine and the primary pylon structure. It provides an additional force transfer path that directly connects engine mounting points to the wing structure through vertically oriented bores, complementing the conventional thrust-force-reacting assembly.
Solution Approach 2:
The fastening lugs serve multiple functions: they provide attachment points for the engine, contain vertically oriented bores for direct force transfer to the wing, and include horizontally oriented bores for lateral positioning. This multi-functionality optimizes both attachment security and force transfer efficiency.
3Force
If multiple bores are configured vertically through the blade and fastening lugs, then direct force transmission to wing panels is enabled, but the manufacturing complexity increases
Solution Approach 1:
The pylon is divided into modular segments (primary pylon, blade, fastening lugs) that can be manufactured separately with their respective bore configurations, then assembled. This reduces the manufacturing complexity of each individual component while achieving the overall force transmission goal.
Solution Approach 2:
Multiple force transfer functions are merged into integrated components. The fastening lugs combine lateral positioning (horizontal bores) with vertical force transfer (vertical bores), and the blade integrates structural support with force transmission pathways, reducing the total number of separate components needed.
Data Source
AI summary
An assembly including a wing with a pressure-side panel and a suction-side panel through which two bores pass, an engine pylon including a blade with three bores and two fastening lugs, each of which has a sixth bore, two first shackles fastened between the blade and the suction-side panel, two second shackles fastened between the blade and the suction-side panel and two fittings, which are fastened beneath the pressure-side panel and each have a female clevis for housing a fastening lug therein.