Granted Patent B2

US 12,509,224 · App. 18/383,981 · Granted Dec 30, 2025

Inventors: Kensuke Yoshimura (Tokyo, JP); Keisuke Tajiri (Tokyo, JP); Takeshi Fukurose (Tokyo, JP)

Assignee: SUBARU CORPORATION

B64C29/0016B64C39/064B64D27/357

Abstract

Claims (28)

1 . 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.

2 . The rotorcraft according to claim 1 , further comprising:

rudders protruding from the upper surfaces of the circular wings into the air flow paths respectively.

3 . The rotorcraft according to claim 1 , further comprising:

wheels; and

batteries,

wherein one of the wheels and/or one of the batteries is disposed below each of at least two of the circular wings.

4 . The rotorcraft according to claim 1 , further comprising:

wheels; and

batteries,

wherein the wheels and the batteries are disposed below at least two of the circular wings respectively so that a center of gravity of the rotorcraft lies below the rotors, and

the batteries are disposed between the fuselage and the wheels respectively.

5 . The rotorcraft according to claim 2 , further comprising:

wheels; and

batteries,

wherein one of the wheels and/or one of the batteries is disposed below each of at least two of the circular wings.

6 . The rotorcraft according to claim 2 , further comprising:

wheels; and

batteries,

wherein the wheels and the batteries are disposed below at least two of the circular wings respectively so that a center of gravity of the rotorcraft lies below the rotors, and

the batteries are disposed between the fuselage and the wheels respectively.

Assignments (1)

Continuity (1)

References Cited (34)