Aircraft Deflector Assembly Sliding Guide Mechanism
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Solution Overview
Problem
Existing deflector assemblies for aircraft are rigidly fixed, leading to load transfer from vibrations and movements during hoist operations, which can cause jamming and are not easily removable or lightweight, posing challenges for rotary wing aircrafts that require adaptability and weight constraints.
Innovation Solution
A deflector assembly with a sliding guide mechanism, comprising an adjoined anchorage secured to a protuberant body and a remote anchorage secured to the fuselage, featuring a deflector ramp with a central oblique section that allows for linear translation and rotational freedom, reducing load transfer and enabling easy mounting and demounting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the deflector assembly is rigidly fixed to the fuselage, then the structure is simple and reliable, but all loads from vibration and movements are transferred to the fuselage
Solution Approach 1:
The deflector assembly is made movable relative to the fuselage through a sliding mechanism guided by camber lines. The deflector can move along the camber line direction to absorb vibrations and movements, converting the rigid fixed structure into a dynamic adaptive structure that reduces load transfer while maintaining reliability
2Device complexity
If the deflector assembly is rigidly fixed to the fuselage, then the structure is simple, but the deflector assembly cannot be easily detached for mission adaptation
Solution Approach 1:
The deflector assembly is designed as a separable component that can be independently mounted and detached from the fuselage. The sliding mechanism along the camber line allows for easy installation and removal, enabling the aircraft to be adapted for different missions without permanent modifications
3Reliability
If a traditional deflector assembly is used, then the protection function is provided, but the aerodynamic drag is increased and weight constraints are violated
Solution Approach 1:
The deflector assembly utilizes a thin-walled tubular structure that follows the camber line geometry. This flexible yet protective design provides the necessary protection function while minimizing weight and aerodynamic drag, suitable for rotary wing aircraft with strict weight constraints
Data Source
AI summary
A deflector assembly for the rope/cable hanging from a hoist mounted on an aircraft (A). The deflector assembly has an adjoined anchorage that includes a socket face that internally has a sliding bearing in which is housed an innermost end, so that the innermost end is slidably guided relative to the adjoined anchorage to have one degree of freedom along a linear translation axis (LT). A remote anchorage has a support bracket for demountably mounting the remote anchorage to the fuselage. The rotorcraft can be chosen among: helicopters, hybrid rotary aircrafts, UAV rotorcrafts and inhabitable rotorcrafts including remote piloting functions.