公开(公告)号：US12091167B1

公开(公告)日：2024-09-17

申请号：US17948135

申请日：2022-09-19

Applicant: Wisk Aero LLC

Inventor： Geoffrey Alan Long ,  Chase Nichols ,  Patrick Kelly

IPC: B64C27/54 ,  B64C11/48 ,  B64C27/50 ,  B64D35/00

CPC classification number: B64C27/54 ,  B64C11/48 ,  B64C27/50 ,  B64D35/00

Abstract: Embodiments provide scissoring mechanisms for a vertical lift fan of an electric aircraft (e.g., a vertical take-off-landing eVTOL aircraft) where the blades of the vertical lift fan can be opened at almost zero speed. Exemplary scissoring mechanisms have position locking features that keep the collapsed blades in the low drag orientation once closed (e.g., in the stowed position). As a result, the scissoring mechanisms do not cause large impulses during opening and closing that cause large stresses and noise. In addition, the scissoring mechanisms provide an opportunity to check that the fans are opened properly prior to spinning them to the full operating speed. The scissoring mechanisms may not require an extra actuator, and rely on the propulsion motor.

公开(公告)号：US20240001802A1

公开(公告)日：2024-01-04

申请号：US18466713

申请日：2023-09-13

Applicant: Wisk Aero LLC

Inventor： Geoffrey Alan Long ,  Michael John Burgart

IPC: B60L58/19 ,  B60W10/26 ,  H02J7/00 ,  B64D27/24 ,  B64D35/02 ,  G01R19/165 ,  H01M10/48 ,  H02J1/12 ,  H02M3/04 ,  H02P27/06

CPC classification number: B60L58/19 ,  B60W10/26 ,  H02J7/0024 ,  B64D27/24 ,  B64D35/02 ,  G01R19/16542 ,  H01M10/482 ,  H02J1/12 ,  H02J7/0031 ,  H02J7/0047 ,  H02J7/007 ,  H02M3/04 ,  H02P27/06 ,  H02M1/0067

Abstract: Electrically powered vehicles with redundant power distribution circuits employ inverters and a multi-phase alternating current (AC) motor. An electrically powered vehicle includes batteries, inverters, interphase transformers, and a three-phase AC motor. Each of the inverters generates a three-phase AC input from power supplied by an associated one of the batteries. The interphase transformers generate drive phases for the AC motor from the three-phase AC inputs generated by the inverters.

公开(公告)号：US20230411958A1

公开(公告)日：2023-12-21

申请号：US18458551

申请日：2023-08-30

Applicant: Wisk Aero LLC

Inventor： Geoffrey Alan Long ,  Lewis Romeo Hom ,  Marko Kalemkeris ,  Michael John Burgart ,  Joshua Bender ,  Fernando Leite ,  Arun Gowda ,  Tiago Silva

IPC: H02J1/10 ,  B64D27/24 ,  B60L50/60

CPC classification number: H02J1/10 ,  B64D27/24 ,  B60L50/60 ,  B64D2221/00 ,  B60L2200/10

Abstract: A power distribution circuit for an electrically powered aircraft includes a plurality of batteries and a plurality of electric propulsion systems. A plurality of power distribution circuits each couple a battery of the plurality of batteries to two or more electric propulsion systems. The plurality of electric propulsion systems are positioned on the aircraft to apply balanced forces to the aircraft such that in the event of a failure, the aircraft remains stable and only experiences a loss in altitude or speed.

公开(公告)号：US11239841B1

公开(公告)日：2022-02-01

申请号：US17193883

申请日：2021-03-05

Applicant: Wisk Aero LLC

Inventor： Hongxia Chen ,  Rui Gao ,  Lewis Romeo Hom ,  Geoffrey Alan Long

IPC: G01R31/26 ,  G01R31/40 ,  G01R19/12 ,  G01R19/165 ,  H03K17/74 ,  H03K17/082

Abstract: A power delivery system includes a controller, configured to receive a voltage indication signal indicating a measured voltage of a battery management system and to determine whether first and second diodes of the battery management system are faulty based on the voltage indication signal. The controller is also configured to respectively receive first and second current indication signals from first and second current sensors of the battery management system and to determine whether the first and second diodes of the first battery management system are faulty based on the first and second current indication signals.

公开(公告)号：US10586639B2

公开(公告)日：2020-03-10

申请号：US15398300

申请日：2017-01-04

Applicant: Wisk Aero LLC

Inventor： Geoffrey Alan Long

IPC: H01F7/02 ,  H02K15/03

Abstract: Techniques disclosed here provide an array of magnets and a method of manufacturing a magnet array. In an embodiment, the array of magnets includes a plurality of three-pole magnets arranged in an array in which each three-pole magnet comprising the array is adjacent to one or more other three-pole magnets comprising the array. For example, a three-pole magnet comprises a first surface comprising a first magnetic pole having a first magnetic polarity, a second surface that is adjacent to and at least partly orthogonal to the first surface and which comprises a second magnetic pole having a second magnetic polarity that is opposite the first magnetic polarity, and a third surface that is adjacent to the first surface at an end substantially opposite the second surface and which comprises a third magnetic pole having the second magnetic polarity.

公开(公告)号：US10583912B2

公开(公告)日：2020-03-10

申请号：US16282186

申请日：2019-02-21

Applicant: Wisk Aero LLC

Inventor： Geoffrey Alan Long

IPC: B64C11/02 ,  B64D27/24 ,  B64C11/28 ,  H02K21/24 ,  H02K7/14 ,  B64C11/20 ,  B64C29/00 ,  B64C27/32 ,  B64D35/02

Abstract: A lift fan includes a stator which is configured to output a magnetic field. The lift fan also includes a first housing which in turn includes a blade, a second housing, and a magnet array. The magnet array is coupled to either the first housing or the second housing and the housing, which is coupled to the magnet array, rotates in response to the magnet array responding magnetically to the magnetic field output by the stator.

公开(公告)号：US12157555B1

公开(公告)日：2024-12-03

申请号：US18504869

申请日：2023-11-08

Applicant: Wisk Aero LLC

Inventor： Geoffrey Alan Long ,  Pieter DePape

IPC: B64C11/00

Abstract: Embodiments provide a propeller ground stop mechanism configured to keep an unpowered propeller of an aircraft (e.g. when the aircraft is on the ground and not operating) static. The propeller is prevented from rotating due to external forces (e.g. an air flow caused by wind, manual rotation of the propeller). When the propeller is powered, and the propeller is providing thrust, the propeller ground stop mechanism automatically disengages and does not provide any drag. Among various benefits, the propeller ground stop mechanism provides added safety to the ground support personnel.

公开(公告)号：US12122503B1

公开(公告)日：2024-10-22

申请号：US17948545

申请日：2022-09-20

Applicant: Wisk Aero LLC

Inventor： Geoffrey Alan Long

IPC: B64C11/04 ,  B64C11/46 ,  B64C27/02 ,  B64C27/22

CPC classification number: B64C11/04 ,  B64C11/46 ,  B64C27/021 ,  B64C27/22

Abstract: Embodiments of the invention are directed to systems and methods for reducing drag on an aircraft. The aircraft can include at least one propulsion system with rotor blades configured to reduce aerodynamic drag when the propulsion system is deactivated. To reduce the amount of drag, the rotor blades can be locked into an aerodynamic position, and prevented from passively spinning. Additionally, the rotor blades can be configured to have angular positions that reduce drag. For example, the rotor blades as a group may be configured to generally point toward and/or away from an airflow current.

公开(公告)号：US20240239500A1

公开(公告)日：2024-07-18

申请号：US18414676

申请日：2024-01-17

Applicant: Wisk Aero LLC

Inventor： Rui Gao ,  Michael John Burgart ,  Geoffrey Alan Long

IPC: B64D27/357 ,  B60L50/60 ,  B64C29/00

CPC classification number: B64D27/357 ,  B60L50/60 ,  B60L2200/10 ,  B60L2210/00 ,  B64C29/0008 ,  B64D2221/00

Abstract: A power distribution control approach employs power distribution buses that are controllably energized and de-energized to control which aerial vehicle systems received power based on the applicable operational mode. A method of controlling power distribution in an electrically powered vertical takeoff and landing aircraft includes receiving an operational mode indication that identifies an operational mode. The operational mode is one of predetermined operational modes for the aircraft. Power distribution buses of the aircraft are controlled, based on the operational mode indication, to control each of the power distribution buses to be energized or de-energized.

公开(公告)号：US20220127011A1

公开(公告)日：2022-04-28

申请号：US17202855

申请日：2021-03-16

Applicant: Wisk Aero LLC

Inventor： Geoffrey Alan Long ,  Lewis Romeo Hom

IPC: B64D31/00 ,  B64D27/24 ,  B60L50/60 ,  H02J4/00

Abstract: A power distribution circuit for an electrically powered aircraft includes a plurality of batteries and a plurality of electric propulsion systems. A plurality of isolated power distribution circuits each couple a battery of the plurality of batteries to two or more electric propulsion systems. The plurality of electric propulsion systems are positioned on the aircraft to apply balanced forces to the aircraft such that in the event of a failure, the aircraft remains stable and only experiences a loss in altitude or speed.