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    SYSTEMS AND METHODS FOR TILTER MOTOR COOLING
    1.
    发明公开
    SYSTEMS AND METHODS FOR TILTER MOTOR COOLING 审中-公开

    公开(公告)号：US20240190566A1

    公开(公告)日：2024-06-13

    申请号：US18311288

    申请日：2023-05-03

    Applicant: Archer Aviation Inc.

    Inventor： Bharat TULSYAN ,  Christopher M. HEATH ,  Kerry MANNING ,  Giovanni DROANDI ,  Michael SCHWEKUTSCH

    IPC: B64C29/00 ,  B64D33/08

    CPC classification number: B64C29/0033 ,  B64D33/08

    Abstract: A VTOL aircraft includes a plurality of tilt propellers configured to be rotated between a forward cruise configuration and a vertical lift configuration. A nacelle or other structure may be configured to form a low pressure zone from the wake of the tilt propellers when operating in the lift configuration. The low pressure zone may include an outlet side of a cooling path. Due to the low pressure, airflow may be induced through the cooling path even in the absence of strong air pressure at the inlet side. During a cruise operation when the VTOL aircraft is in forward motion, the nacelle or other structure may be aligned with a baffle to form an exhaust channel for the cooling airflow.

    SYSTEMS AND METHODS FOR RETRACTING LIFT PROPELLER IN EVTOL AIRCRAFT
    3.
    发明申请
    SYSTEMS AND METHODS FOR RETRACTING LIFT PROPELLER IN EVTOL AIRCRAFT 有权

    公开(公告)号：US20250042544A1

    公开(公告)日：2025-02-06

    申请号：US18477220

    申请日：2023-09-28

    Applicant: Archer Aviation Inc.

    Inventor： Kerry MANNING ,  Nathan STORRS ,  Scott GRAVES

    IPC: B64C29/00 ,  B64C11/02 ,  B64D27/24 ,  B64D27/40

    Abstract: A VTOL aircraft includes a lift propeller configured to provide lift during takeoff, landing and hover operations. The lift propeller is configured to be stowed close to a boom surface when not in use during, e.g., cruise flight, to minimize drag around propeller surfaces. The lift propeller may be displaced vertically with respect to the boom when switching to a lift configuration to provide greater separation from the boom to improve lift efficiency and reduce unwanted vibrations. The lift propeller may have a fail-safe configuration that allows the propeller to move passively between lift and stowed configurations, and to fully rotate even when fully retracted.

    SYSTEMS AND METHODS FOR LIFTER MOTOR COOLING IN EVTOL AIRCRAFT
    5.
    发明申请
    SYSTEMS AND METHODS FOR LIFTER MOTOR COOLING IN EVTOL AIRCRAFT 有权

    公开(公告)号：US20250083807A1

    公开(公告)日：2025-03-13

    申请号：US18956397

    申请日：2024-11-22

    Applicant: Archer Aviation Inc.

    Inventor： Karthik Kumar BODLA ,  Bharat TULSYAN ,  Christopher M. HEATH ,  Kerry MANNING ,  Alan D. TEPE

    IPC: B64C29/00 ,  B64D33/08

    Abstract: An apparatus for aircraft propulsion includes a propeller and a hybrid-cooled electric engine mounted to a support structure and configured to rotate the propeller. The electric engine is located in an enclosure, with a first heat transfer element thermally coupled to the electric engine via a fluid flow path, partially located outside the enclosure. A second heat transfer element, integral to or thermally coupled to the electric engine, provides air cooling. Both heat transfer elements are housed within the aircraft's support structure. At least one air inlet on the upper side of the support structure receives propeller downwash. A first cooling path directs a portion of the downwash from the air inlet to the first heat transfer element, and a first air outlet exhausts the downwash.

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