Sail Wing Aircraft Engine Pylon Mounting System
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Solution Overview
Problem
Conventional sail wing aircraft lack an efficient engine attachment system that ensures secure and safe mounting of propulsion engines, which can lead to mechanical instability and safety concerns during operation.
Innovation Solution
The sail wing aircraft employs an upper beam fixed to frames at the engine air inlet and rear, along with a pylon for attaching the engine to the fuselage, featuring a cut-out in the fuselage for assembly, pre-assembled engine and pylon hoisting, and a fail-safe device for engine support, eliminating mechanical links post-installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the engine is directly mounted on the fuselage without a pylon, then the structure is simpler, but the mechanical stability and safety of engine attachment are compromised
Solution Approach 1:
A pylon is introduced as an intermediary component between the fuselage and the engine. The pylon includes attachment points at its front end to the fuselage and attachment points at its rear end to the engine, serving as a mediator that ensures secure and stable engine mounting while maintaining structural integrity during operation.
2Reliability
If multiple attachment points are used on the pylon, then the engine attachment becomes more secure, but the device complexity increases
Solution Approach 1:
The pylon is segmented into multiple functional zones with specific attachment points: front end attachment points to the fuselage, rear end attachment points to the engine, and intermediate attachment points along its length. This segmentation allows the engine to be securely attached through multiple points while maintaining a relatively simple overall pylon structure.
3Duration of action of stationary object
If the upper beam is permanently linked to the engine, then the support is more continuous, but the ease of maintenance and replacement is reduced
Solution Approach 1:
The connection between the upper beam and the engine is made dynamic rather than permanent. The engine can be hoisted by the upper beam during installation, but once installed, the mechanical link is released. This allows the engine to be securely supported during operation while enabling easy maintenance and replacement by simply re-engaging the hoisting mechanism.
4Ease of manufacture
If the engine is hoisted through a cut-out in the fuselage, then the installation process is simplified, but the structural integrity of the fuselage is compromised
Solution Approach 1:
A cut-out is created in the fuselage to extract a portion of the fuselage structure, allowing the engine-pylon assembly to be hoisted through the opening. The upper beam spans across this cut-out and provides structural support, while the pylon transfers engine loads to the fuselage through attachment points, thereby maintaining overall structural integrity despite the localized removal of material.
Data Source
AI summary
Sail wing aircraft which includes a wing (6) and at least one propulsion engine (8). It includes an upper beam (22) which is firmly fixed at its front end to a first frame (12) located on an air inlet (14) of the propulsion engine and which is in addition firmly fixed at its median part to a second frame (16) located to the rear of the first frame. The sail wing aircraft includes in addition a pylon (26) for attachment of the engine onto the fuselage, where the engine is fixed to the pylon (26).