US 12,407,204 B2
Electric machine having rotor with integrated fan
Jagadeesh K. Tangudu, South Windsor, CT (US); Andrzej E. Kuczek, Bristol, CT (US); Joseph E. Turney, Amston, CT (US); Abbas A. Alahyari, Glastonbury, CT (US); Kimberly R. Saviers, Glastonbury, CT (US); and Dmytro M. Voytovych, Rocky Hill, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RTX Corporation, Farmington, CT (US)
Filed on Feb. 1, 2023, as Appl. No. 18/162,848.
Prior Publication US 2024/0258851 A1, Aug. 1, 2024
Int. Cl. H02K 1/16 (2006.01); H02K 1/2786 (2022.01); H02K 1/32 (2006.01); H02K 9/06 (2006.01); B64D 27/30 (2024.01)
CPC H02K 1/2786 (2013.01) [H02K 1/16 (2013.01); H02K 1/32 (2013.01); H02K 9/06 (2013.01); B64D 27/30 (2024.01)] 20 Claims
OG exemplary drawing
 
1. An aircraft electric motor comprising:
a rotor assembly comprises an outer diameter portion, and inner diameter portion, and an end portion, arranged to define a stator cavity, and a rotor hub configured to connect to a shaft of the aircraft electric machine;
a stator assembly arranged within the stator cavity; and
at least one fan assembly defined in the end portion and configured to induce a cooling flow through the stator cavity,
wherein the end portion includes an end portion support structure that houses end portion magnets and the rotor assembly further comprises: an outer diameter extension extending radially outward from the end portion support structure; an inner diameter extension extending radially inward from the end portion support structure; and the at least one fan assembly comprises: a first fan assembly arranged at an outer diameter end of the end portion and between the end portion support structure and the outer diameter extension; and a second fan assembly arranged at an inner diameter end of the end portion and between the end portion support structure and the inner diameter extension.