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    ELECTRIC AIRCRAFT ENGINE
    2.
    发明公开
    ELECTRIC AIRCRAFT ENGINE 审中-公开

    公开(公告)号：EP4420986A3

    公开(公告)日：2024-10-30

    申请号：EP24188514.4

    申请日：2022-02-10

    申请人： Lilium eAircraft GmbH

    发明人： WU, Eric ,  VERMEIREN, Sébastien ,  SHORTTE, Maurice ,  MIRANDA, Pedro ,  LAVEAU, Benoit ,  RÖSICK, Joel

    IPC分类号： F01D25/02 ,  F02C7/047 ,  F01D25/04 ,  F01D25/06 ,  F01D25/36 ,  F01D15/10 ,  F01D5/08 ,  F01D5/10 ,  B64D27/24

    摘要： The present invention provides an electric aircraft engine. It also provides an aircraft, comprising such an electric aircraft engine. According to both a first aspect and a second aspect of the present invention, the electric aircraft engine comprises an electric motor with a rotor configured to be driven in rotation about a central axis, a fan having a central yoke mechanically coupled to the rotor for driving the fan and a plurality of fan blades projecting radially outwardly from the yoke, and an anti-icing and/or de-icing system to remove and/or prevent built-up of ice on the fan, said anti-icing and/or de-icing system comprising an electrical power source and a wireless energy transfer system for wirelessly transferring energy for anti-icing and/or de-icing from the electrical power source to the fan. In the first aspect of the present invention, the electric motor comprises an electromagnetically excited resolver for determining an angular position of the rotor of the electric motor, and an anti-icing and/or de-icing control unit is configured to induce losses by adding a high-power, highfrequency component of current and flux to the normal excitation signals of the resolver, thereby heating up the resolver. In the second aspect of the present invention, the wireless energy transfer system consists of two coils, a transmitter coil electrically coupled to the electrical power source and a receiver coil thermally connected to the fan, the energy being transmitted wirelessly by induction via an air gap from the transmitter coil to the receiver coil.

    BLADE FOR USE IN A GAS TURBINE ENGINE AND GAS TURBINE ENGINE FOR AN AIRCRAFT
    10.
    发明公开
    BLADE FOR USE IN A GAS TURBINE ENGINE AND GAS TURBINE ENGINE FOR AN AIRCRAFT 审中-公开

    公开(公告)号：EP4134515A1

    公开(公告)日：2023-02-15

    申请号：EP22188260.8

    申请日：2022-08-02

    申请人： Rolls-Royce plc

    发明人： Sidebotham, Gary ,  Harris, John ,  Liu, Chenhui

    IPC分类号： F01D5/08 ,  F01D5/30

    摘要： A blade for use in a gas turbine engine, the blade comprising a blade portion and a fir tree root portion, the blade portion and the root portion having a connected passage for allowing cooling air to flow within the blade, the fir tree root portion having an air intake on its leading edge, the air intake allowing cooling air to enter the cooling passage and wherein the fir tree root portion comprises a plurality of projections, including at least a base projection and a top projection; and wherein the air inlet located in the base projection of the fir tree root portion and wherein the air inlet comprises at least 50% of the face of the base projection of the fir tree root portion.