Rotorcraft including circular wings
AssigneeSubaru Corporation
InventorsKensuke Yoshimura, Keisuke Tajiri, Takeshi Fukurose
Life of this patent
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Abstract
A rotorcraft includes a fuselage, rotors and circular wings. The rotors are attached to the fuselage. The rotors are attached to the fuselage. The circular wings are disposed under the rotors respectively. Upper surfaces of the circular wings have annular curved surfaces and thereby are convex upward respectively. The circular wings cause Coanda effects by the upper surfaces respectively. First lift is generated by rotating the rotors. Second lift is generated by the Coanda effects by the circular wings. Third lift is generated by air jets deflected downward along the upper surfaces of the circular wings respectively.
Claims6
A rotorcraft comprising:
- a fuselage;
- rotors attached to the fuselage;
- and
- circular wings disposed under the rotors respectively, upper surfaces of the circular wings having annular curved surfaces and thereby being convex upward respectively, the circular wings causing Coanda effects by the upper surfaces respectively,
- wherein first lift is generated by rotating the rotors,
- wherein second lift is generated by the Coanda effects by the circular wings, and
- wherein third lift is generated by air jets deflected downward along the upper surfaces of the circular wings respectively,
- further including cowls respectively covering at least portions of the upper surfaces of the circular wings, the portions of the upper surfaces including the annular curved surfaces, the cowls being disposed apart from the portions of the upper surfaces and thereby air flow paths being formed between the cowls and the upper surfaces, the cowls having inlets for drawing air into the air flow paths.
Dependencies are inferred from the claim text.