A device for cooling an aircraft propulsion system, including at least one cooling circuit with at least one air inlet equipped with an intake flap mobile between closed and open positions and at least one air outlet equipped with an exhaust flap mobile between closed and open positions, and at least one actuator coupled by at least one kinematic system to the pair of intake and exhaust flaps in such a manner that the intake and exhaust flaps are driven in synchronized movements and simultaneously occupy the closed position or the open position. This solution enables reduction of the number of actuators and, finally, the all-up weight of the aircraft.

An adaptor is disclosed for connecting a rotating electrical machine 12 to a prime mover 10. The adaptor comprises at least one air outlet. The adaptor is arranged to provide an increase in a cross-sectional area of air flow towards the outlet. In this way part of the dynamic pressure can be converted into additional static pressure rise through steady expansion of the air flow cross-section. This in turn may help to improve the overall amount of cooling air passing through the machine for a given fan input power.

An adaptor is disclosed for connecting a rotating electrical machine 12 to a prime mover 10. The adaptor comprises at least one air outlet. The adaptor is arranged to provide an increase in a cross-sectional area of air flow towards the outlet. In this way part of the dynamic pressure can be converted into additional static pressure rise through steady expansion of the air flow cross-section. This in turn may help to improve the overall amount of cooling air passing through the machine for a given fan input power.

A brushless DC motor includes a stator, a rotor, and motor terminals mounted on the stator. Each motor terminal includes a planar portion extending circumferentially from the end insulator, a wire-receiving member extending from a first end of the planar portion and folded over an outer surface of the planar portion away from the center axis of the stator at an angle of less than 90 degrees, and a tab portion extending from a second end of the planar portion parallel to the center axis of the stator. A circuit board is disposed adjacent the motor including power switches mounted thereon for energizing the stator windings. Slots are formed in the circuit board to align with and securely receive the tab portions of the motor terminals, thus electrically connecting the motor terminals to the power switches.

A brushless DC motor includes a stator, a rotor, and motor terminals mounted on the stator. Each motor terminal includes a planar portion extending circumferentially from the end insulator, a wire-receiving member extending from a first end of the planar portion and folded over an outer surface of the planar portion away from the center axis of the stator at an angle of less than 90 degrees, and a tab portion extending from a second end of the planar portion parallel to the center axis of the stator. A circuit board is disposed adjacent the motor including power switches mounted thereon for energizing the stator windings. Slots are formed in the circuit board to align with and securely receive the tab portions of the motor terminals, thus electrically connecting the motor terminals to the power switches.

A fluid apparatus includes a hydraulic machine, a rotary electric machine connected to the hydraulic machine, and a power conversion controller that converts power from the rotary electric machine. A non-normal operation is performed in a warning state that differs from a normal state in which a normal operation is continued and an anomalous state in which operation is stopped to continue a stopped condition.

A fluid apparatus includes a hydraulic machine, a rotary electric machine connected to the hydraulic machine, and a power conversion controller that converts power from the rotary electric machine. A non-normal operation is performed in a warning state that differs from a normal state in which a normal operation is continued and an anomalous state in which operation is stopped to continue a stopped condition.

A generator includes a housing; a rotational shaft at least partially inserted into the housing; a rotor coupled to the rotational shaft and rotated together when the rotational shaft is rotated; a stator positioned between an inner surface of the housing and an outer surface of the rotor; a cooling module including a fan cover coupled to the housing, and a fan installed inside of the fan cover to generate a flow of an air passing through an inside of the housing; and a rotation support part including a cylindrical bearing holder positioned inside of the housing, and a bearing which is coupled to an inner circumferential surface of the bearing holder and rotatably supports the rotational shaft, the bearing holder forming a flow path of the air blown by the fan in at least one of an inner side or an outer side.

A generator includes a housing; a rotational shaft at least partially inserted into the housing; a rotor coupled to the rotational shaft and rotated together when the rotational shaft is rotated; a stator positioned between an inner surface of the housing and an outer surface of the rotor; a cooling module including a fan cover coupled to the housing, and a fan installed inside of the fan cover to generate a flow of an air passing through an inside of the housing; and a rotation support part including a cylindrical bearing holder positioned inside of the housing, and a bearing which is coupled to an inner circumferential surface of the bearing holder and rotatably supports the rotational shaft, the bearing holder forming a flow path of the air blown by the fan in at least one of an inner side or an outer side.

A shroud includes a first shroud that covers a first side face to which a muffler is adjacent among four side faces that an engine has, a second shroud that covers a second side face adjacent to the first side face and a third side face, and a third shroud that sections a muffler space for housing the muffler with the first shroud, the first shroud and the second shroud form an upstream side air guide path that makes cooling air flow around the engine, and the muffler space is connected to a downstream side of the upstream side air guide path.