Abstract: According to one implementation, a rotating device includes at least one ring, at least one motor and a power transmission mechanism. The least one ring rotates in a circumference direction. The at least one ring includes no hub for housing a motor inside the at least one ring. The at least one motor generates power for rotating the at least one ring. The power transmission mechanism transmits the power to the at least one ring.

Abstract: A rotary wing driving apparatus includes a motor, a rotary wing, and an electromagnetic brake. The rotary wing is attached to a shaft of the motor. The electromagnetic brake is attached to the shaft of the motor.

Abstract: A redundant propulsion device includes a propeller and electric motors. The electric motors are configured to drive the propeller. The electric motors are disposed with respect to a propeller shaft of the propeller so that, around the propeller shaft, at least one of the electric motors is disposed at each of the locations in the longitudinal direction of the propeller shaft. The electric motors are disposed at positions such that an output shaft of each of the electric motors does not overlap an output shaft of any other one of the electric motors as viewed in the longitudinal direction of the propeller shaft from the propeller.

Abstract: According to one implementation, a propulsion system includes a rotor, a motor and an anti-icing mechanism. The rotor has blades. The motor rotates the rotor. The anti-icing mechanism deices the blades using heat generated by driving of the motor. Further, according to one implementation, an aircraft includes the above-mentioned propulsion system. Further, according to one implementation, an anti-icing method of a rotor having blades includes deicing the blades using heat generated by driving of a motor for rotating the rotor.

Abstract: A redundant propulsion device includes a propeller and electric motors. The electric motors are configured to drive the propeller. The electric motors are disposed with respect to a propeller shaft of the propeller so that, around the propeller shaft, at least one of the electric motors is disposed at each of the locations in the longitudinal direction of the propeller shaft. The electric motors are disposed at positions such that an output shaft of each of the electric motors does not overlap an output shaft of any other one of the electric motors as viewed in the longitudinal direction of the propeller shaft from the propeller.

Abstract: A high altitude air start equipment for an aircraft reciprocating engine includes: a compressor configured to suck and compress air, and supply the compressed air to the aircraft reciprocating engine; and a motor configured to supply the compressed air to the reciprocating engine to restart the reciprocating engine or to restore output by outputting rotational power to the compressor when the reciprocating engine stops or malfunctions during flight of the aircraft.

Abstract: There is provided a supercharging system for an aircraft reciprocating engine, comprising: a plurality of compressors for supplying compressed air to the aircraft reciprocating engine; at least one turbine for obtaining rotational power for at least one of the plurality of compressors, and a plurality of motors for respectively providing rotational power to the plurality of compressors. An object of the present invention is to reduce turbo lag in a reciprocating engine for an aircraft in which multiple-stage supercharging is performed by the turbocharger.

Abstract: According to one implementation, a rotating device includes at least one ring, at least one motor and a power transmission mechanism. The least one ring rotates in a circumference direction. The at least one ring includes no hub for housing a motor inside the at least one ring. The at least one motor generates power for rotating the at least one ring. The power transmission mechanism transmits the power to the at least one ring.

Abstract: A rotary wing driving apparatus includes a motor, a rotary wing, and an electromagnetic brake. The rotary wing is attached to a shaft of the motor. The electromagnetic brake is attached to the shaft of the motor.

Abstract: There is provided a supercharging system for an aircraft reciprocating engine, comprising: a plurality of compressors for supplying compressed air to the aircraft reciprocating engine; at least one turbine for obtaining rotational power for at least one of the plurality of compressors, and a plurality of motors for respectively providing rotational power to the plurality of compressors. An object of the present invention is to reduce turbo lag in a reciprocating engine for an aircraft in which multiple-stage supercharging is performed by the turbocharger.

Abstract: A high altitude air start equipment for an aircraft reciprocating engine includes: a compressor configured to suck and compress air, and supply the compressed air to the aircraft reciprocating engine; and a motor configured to supply the compressed air to the reciprocating engine to restart the reciprocating engine or to restore output by outputting rotational power to the compressor when the reciprocating engine stops or malfunctions during flight of the aircraft.