Flying Apparatus Rotor-Engine Overlap for Flight Balance
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Solution Overview
Problem
The existing flying apparatuses, such as those described in Japanese Patent No. 7081060, suffer from poor balance due to the heavyweight engine being located below the rotors, leading to instability during flight.
Innovation Solution
The design includes an airframe with main and sub-rotors, where the main rotors overlap the engine when viewed in the up-down direction, and the engine is positioned above a position detector, with a fuel tank at the lower section and a casing enclosing part of it, enhancing balance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the engine is located below the rotors, then the engine can be easily mounted and accessed, but the center of gravity shifts below the rotors causing poor balance and instability during flight
Solution Approach 1:
The engine position is inverted from the conventional below-rotor location to an above-rotor location. This inversion moves the center of gravity above the rotors, resolving the balance and stability issues while maintaining ease of mounting through the airframe integration design.
2Stability of the object's composition
If the engine is moved above the rotors to improve balance, then flight stability improves, but the engine placement becomes more complex
Solution Approach 1:
The engine housing is merged with the airframe structure, where the engine is mounted on the upper surface of the housing that forms part of the airframe. This integration simplifies the overall structure and reduces component count while achieving the desired above-rotor engine placement for improved balance.
Data Source
AI summary
A flying apparatus includes an airframe, a rotor attached to the airframe, and an engine to supply a driving force to rotate the rotor. The rotor overlaps the engine when viewed in an up-down direction.