US 12,294,246 B2
Aircraft electric motor
Jagadeesh K. Tangudu, South Windsor, CT (US); Joseph K. Coldwate, Roscoe, IL (US); and Zhentao Stephen Du, Rocky Hill, CT (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on May 9, 2022, as Appl. No. 17/739,495.
Prior Publication US 2023/0361638 A1, Nov. 9, 2023
Int. Cl. H02K 1/2795 (2022.01); B64D 27/24 (2024.01); H02K 1/16 (2006.01); H02K 7/00 (2006.01)
CPC H02K 1/2795 (2022.01) [B64D 27/24 (2013.01); H02K 1/16 (2013.01); H02K 7/003 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An aircraft electric motor comprising:
a rotor comprising a plurality of magnet segments arranged on a frame of the rotor, the rotor defining an internal cavity radially inward from the plurality of magnet segments;
an output shaft operably coupled to the rotor; and
a stator comprising a yoke and at least one winding wrapped about a plurality of stator teeth, the stator arranged within the internal cavity of the rotor, wherein the stator defines a radial span as a distance from the yoke to a radial outward edge of the at least one winding;
wherein the plurality of stator teeth comprise at least one tooth formed from a magnetic material and having:
an engagement end configured to engaged with the yoke;
a distal end opposite the engagement end;
a shaped end at the distal end of the tooth, wherein a portion of the tooth at the shaped end is closer to the yoke than the radial span; and
one or more cooling channels arranged to provide cooling to the at least one winding,
wherein the shaped end defines a tapering of the shaped end between the winding and a cooling channel of the one or more cooling channels.