Tiltrotor propulsion system for an aircraft

    公开(公告)号:US10392106B2

    公开(公告)日:2019-08-27

    申请号:US15259564

    申请日:2016-09-08

    Abstract: An aircraft includes a fuselage, a forward wing assembly, and aft wing assembly, and a propulsion system. The propulsion system includes a port forward propulsor and a starboard forward propulsor, each of which rotatable between a forward thrust position and a vertical thrust position and together defining a maximum forward thrust capability. The propulsion system also includes a port aft propulsor and a starboard aft propulsor, each of which also rotatable between a forward thrust position and a vertical thrust position, and together defining a maximum aft thrust capability. The maximum forward thrust capability is different than the maximum aft thrust capability to achieve certain efficiencies.

    Vertical Takeoff and Landing Aircraft
    72.
    发明申请

    公开(公告)号:US20190047719A1

    公开(公告)日:2019-02-14

    申请号:US16042522

    申请日:2018-07-23

    Abstract: An aircraft includes a fuselage; a propulsion system including a power source and a vertical thrust propulsor driven by the power source; and a wing extending from the fuselage, the vertical thrust propulsor positioned on or at least partially within the wing, the wing including a diffusion assembly, the diffusion assembly including at least one diffusion member fixed in position and located downstream of the vertical thrust propulsor for diffusing an airflow from the vertical thrust propulsor.

    AFT engine nacelle shape for an aircraft

    公开(公告)号:US09815560B2

    公开(公告)日:2017-11-14

    申请号:US14859566

    申请日:2015-09-21

    Abstract: An aircraft including a fuselage and an aft engine is provided. The fuselage extends from a forward end of the aircraft towards an aft end of the aircraft. The aft engine is mounted to the fuselage proximate the aft end of the aircraft and includes a fan and a nacelle. The fan is rotatable about a central axis of the aft engine and includes a plurality of fan blades. The nacelle of the aft engine surrounds the plurality of fan blades and defines a bottom portion having a forward end. Additionally, the nacelle defines a curved surface at the forward end of the bottom portion, the curved surface including a reference point where the curved surface defines the smallest radius of curvature. The nacelle further defines a normal reference line extending normal from the reference point. The normal reference line defines an angle with the central axis of the aft engine greater than zero to, e.g., allow for a maximum amount of airflow into the aft engine.

    PERMANENT MAGNET MACHINE
    78.
    发明申请
    PERMANENT MAGNET MACHINE 审中-公开
    永磁机

    公开(公告)号:US20150380999A1

    公开(公告)日:2015-12-31

    申请号:US14317294

    申请日:2014-06-27

    Abstract: A permanent magnet machine and a rotor assembly for the permanent magnet machine. The permanent magnet machine includes a stator assembly including a stator core configured to generate a magnetic field and extending along a longitudinal axis with an inner surface defining a cavity and a rotor assembly including a rotor core and a rotor shaft. The rotor core is disposed inside the stator cavity and configured to rotate about the longitudinal axis. The rotor assembly further including a plurality of permanent magnets for generating a magnetic field which interacts with the stator magnetic field to produce torque. The permanent magnets are disposed within one or more cavities formed in a sleeve component. The sleeve component configured to include a plurality of cavities or voids therein and thus provide minimal weight to the permanent magnet machine. The permanent magnet machine providing increased centrifugal load capacity, increased power density and improved electrical performance.

    Abstract translation: 永磁机和用于永磁机的转子组件。 永磁体机器包括定子组件,该定子组件包括定子铁心,该定子铁心构造成产生磁场并且沿纵向轴线延伸,内表面限定空腔,转子组件包括转子芯和转子轴。 转子芯设置在定子腔内部并且构造成围绕纵向轴线旋转。 转子组件还包括多个永磁体,用于产生与定子磁场相互作用以产生转矩的磁场。 永磁体设置在形成在套筒部件中的一个或多个空腔内。 套筒部件构造成在其中包括多个空腔或空隙,从而为永磁机提供最小的重量。 永磁机提供增加的离心负载能力,增加功率密度和改善的电气性能。

    Gas-electric propulsion system for an aircraft

    公开(公告)号:US11312502B2

    公开(公告)日:2022-04-26

    申请号:US16542834

    申请日:2019-08-16

    Abstract: In one aspect the present subject matter is directed to a gas-electric propulsion system for an aircraft. The system may include a turbofan jet engine, an electric powered boundary layer ingestion fan that is coupled to a fuselage portion of the aircraft aft of the turbofan jet engine, and an electric generator that is electronically coupled to the turbofan jet engine and to the boundary layer ingestion fan. The electric generator converts rotational energy from the turbofan jet engine to electrical energy and provides at least a portion of the electrical energy to the boundary layer ingestion fan. In another aspect of the present subject matter, a method for propelling an aircraft via the gas-electric propulsion system is disclosed.

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