US 12,441,495 B2
Flight device and flight device control method
Mitsuru Ishikawa, Ota (JP); and Hiroyuki Nagashima, Ota (JP)
Assigned to ISHIKAWA ENERGY RESEARCH CO., LTD., Ota (JP); and KUBOTA CORPORATION, Osaka (JP)
Appl. No. 18/851,260
Filed by ISHIKAWA ENERGY RESEARCH CO., LTD., Ota (JP); and KUBOTA CORPORATION, Osaka (JP)
PCT Filed Mar. 16, 2023, PCT No. PCT/JP2023/010250
§ 371(c)(1), (2) Date Sep. 26, 2024,
PCT Pub. No. WO2023/189644, PCT Pub. Date Oct. 5, 2023.
Claims priority of application No. 2022-054026 (JP), filed on Mar. 29, 2022.
Prior Publication US 2025/0214723 A1, Jul. 3, 2025
Int. Cl. B64U 50/27 (2023.01); B64D 31/06 (2006.01); B64U 50/11 (2023.01); B64U 10/16 (2023.01)
CPC B64U 50/27 (2023.01) [B64D 31/06 (2013.01); B64U 50/11 (2023.01); B64U 10/16 (2023.01)] 10 Claims
OG exemplary drawing
 
1. A flight device comprising: an airframe; a main rotor; an engine; an engine-side power transmission unit; a rotor-side power transmission unit; a power connection/disconnection unit; and an arithmetic control unit, wherein
the main rotor rotates to generate driving force necessary for the airframe to fly and includes a first main rotor and a second main rotor,
the engine generates power necessary for the first main rotor and the second main rotor to rotate,
the engine-side power transmission unit rotates using the power of the engine and includes a first engine-side power transmission unit and a second engine-side power transmission unit,
the rotor-side power transmission unit includes a first rotor-side power transmission unit drivingly connected to the first main rotor and a second rotor-side power transmission unit drivingly connected to the second main rotor,
the power connection/disconnection unit transmits the power according to conditions and includes a first power connection/disconnection unit and a second power connection/disconnection unit,
the first power connection/disconnection unit is provided between the first engine-side power transmission unit and the first rotor-side power transmission unit,
the second power connection/disconnection unit is provided between the second engine-side power transmission unit and the second rotor-side power transmission unit, and
the arithmetic control unit changes a flight status when a degree to which the first power connection/disconnection unit transmits the power and a degree to which the second power connection/disconnection unit transmits the power are different by a predetermined value.