US 11,655,043 B2
Electric aircraft propulsion system
Sheikh Fazle Rabbi, St. John's (CA); Rick Ralph Pilgrim, Grand Falls-Windsor (CA); Kyle Reuben Genge, Pasadena (CA); Trevor Forward, Calgary (CA); Adam Keating, Mount Pearl (CA); Richard Robert Roper, Katy, TX (US); and Bryan Gabin Lobo, Mississauga (CA)
Assigned to DUXION MOTORS, INC., St. John's (CA)
Filed by Duxion Motors, Inc., St. Johns's (CA)
Filed on Jul. 13, 2021, as Appl. No. 17/374,690.
Application 17/374,690 is a continuation in part of application No. 16/989,117, filed on Aug. 10, 2020, granted, now 11,059,599, issued on Jul. 13, 2021.
Application 16/989,117 is a continuation of application No. PCT/CA2020/050662, filed on May 15, 2020.
Claims priority of provisional application 62/848,897, filed on May 16, 2019.
Prior Publication US 2022/0009644 A1, Jan. 13, 2022
Int. Cl. B64D 27/24 (2006.01); F04D 19/00 (2006.01); F04D 25/06 (2006.01); B64D 29/00 (2006.01); H02K 21/14 (2006.01); H02K 5/20 (2006.01); H02K 7/14 (2006.01); H02K 9/20 (2006.01); H02K 5/18 (2006.01)
CPC B64D 27/24 (2013.01) [B64D 29/00 (2013.01); F04D 19/002 (2013.01); F04D 25/06 (2013.01); H02K 5/18 (2013.01); H02K 5/207 (2021.01); H02K 7/14 (2013.01); H02K 9/20 (2013.01); H02K 21/14 (2013.01); B64D 2241/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A propulsion system for an aircraft, the system comprising:
a nacelle defining a primary air flow path from an inlet end of the nacelle to an outlet end of the nacelle;
a first electric machine comprising:
a first stator positioned in the nacelle and comprising a first one or more stator windings; and
a first rotor and fan assembly positioned in the primary flow path, the first rotor and fan assembly comprising:
a first fan shroud having a first outer surface, wherein the first fan shroud comprises a one-piece cylindrical fan shroud having a substantially constant radial thickness;
a first plurality of rotor magnets positioned directly on the first outer surface of the first fan shroud and concentric with the first one or more stator windings;
a first fan hub positioned concentrically interior of the first fan shroud, the first fan hub being coupled to a central support shaft; and
a first plurality of fan blades extending between the first fan shroud and the first fan hub.