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11.发明授权公开(公告)号：US11312471B2
公开(公告)日：2022-04-26
申请号：US16355745
申请日：2019-03-16
Applicant: Joby Aero, Inc.
Inventor： JoeBen Bevirt , Gregor Veble Mikic , Joey Milia , Rob Thodal , Vishnu Vithala
Abstract: An aircraft propulsion system with a drag reduction portion adapted to reduce skin friction on at least a portion of the external surface of an aircraft. The drag reduction portion may include an inlet to ingest airflow. The aircraft may also have an internally cooled electric motor adapted for use in an aerial vehicle. The motor may have its stator towards the center and have an external rotor. The rotor structure may be air cooled and may be a complex structure with an internal lattice adapted for airflow. The stator structure may be liquid cooled and may be a complex structure with an internal lattice adapted for liquid to flow through. A fluid pump may pump a liquid coolant through non-rotating portions of the motor stator and then through heat exchangers cooled in part by air which has flowed through the rotating portions of the motor rotor. The drag reduction portion and the cooled electric motor portion may share the same inlet.
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公开(公告)号：US20210078715A1
公开(公告)日：2021-03-18
申请号：US17065172
申请日：2020-10-07
Applicant: Joby Aero, Inc.
Inventor： JoeBen Bevirt , Gregor Veble Mikic , Jason Ryan , Alex Stoll , Rob Thodal , Jeremy Bain
Abstract: A system and method for reducing a psychoacoustic penalty of acoustic noise emitted by an aircraft, including a plurality of propulsion assemblies coupled to the aircraft, wherein each of the plurality of propulsion assemblies includes a motor, and a plurality of blades defined by a propeller, wherein the plurality of blades can define an asymmetric blade spacing; a control subsystem coupled to the aircraft and communicatively coupled to the motor of each of the plurality of propulsion assemblies, wherein the control subsystem is operable to rotate each of the plurality of propulsion assemblies at a different frequency to modulate the acoustic power distribution of the emitted acoustic signature.
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13.发明申请公开(公告)号：US20190329859A1
公开(公告)日：2019-10-31
申请号：US16355745
申请日：2019-03-16
Applicant: Joby Aero, Inc.
Inventor： JoeBen Bevirt , Gregor Veble Mikic , Joey Milia , Rob Thodal , Vishnu Vithula
Abstract: An aircraft propulsion system with a drag reduction portion adapted to reduce skin friction on at least a portion of the external surface of an aircraft. The drag reduction portion may include an inlet to ingest airflow. The aircraft may also have an internally cooled electric motor adapted for use in an aerial vehicle. The motor may have its stator towards the center and have an external rotor. The rotor structure may be air cooled and may be a complex structure with an internal lattice adapted for airflow. The stator structure may be liquid cooled and may be a complex structure with an internal lattice adapted for liquid to flow through. A fluid pump may pump a liquid coolant through non-rotating portions of the motor stator and then through heat exchangers cooled in part by air which has flowed through the rotating portions of the motor rotor. The drag reduction portion and the cooled electric motor portion may share the same inlet.
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14.发明申请公开(公告)号：US20190329858A1
公开(公告)日：2019-10-31
申请号：US16355742
申请日：2019-03-16
Applicant: Joby Aero, Inc.
Inventor： JoeBen Bevirt , Gregor Veble Mikic , Joey Milia , Rob Thodal , Vishnu Vithula
Abstract: An aircraft propulsion system with a drag reduction portion adapted to reduce skin friction on at least a portion of the external surface of an aircraft. The drag reduction portion may include an inlet to ingest airflow. The aircraft may also have an internally cooled electric motor adapted for use in an aerial vehicle. The motor may have its stator towards the center and have an external rotor. The rotor structure may be air cooled and may be a complex structure with an internal lattice adapted for airflow. The stator structure may be liquid cooled and may be a complex structure with an internal lattice adapted for liquid to flow through. A fluid pump may pump a liquid coolant through non-rotating portions of the motor stator and then through heat exchangers cooled in part by air which has flowed through the rotating portions of the motor rotor. The drag reduction portion and the cooled electric motor portion may share the same inlet.
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