US 12,068,644 B2
Hybrid radial-axial motor
Calvin H. Corey, III, Scituate, MA (US); and Edgar S. Thaxton, Groton, MA (US)
Assigned to DRS NAVAL POWER SYSTEMS, INC., Milwaukee, WI (US)
Filed by DRS Naval Power Systems, Inc., Milwaukee, WI (US)
Filed on Oct. 6, 2021, as Appl. No. 17/495,262.
Claims priority of provisional application 63/088,388, filed on Oct. 6, 2020.
Prior Publication US 2022/0109356 A1, Apr. 7, 2022
Int. Cl. H02K 16/04 (2006.01); H02K 1/27 (2022.01); H02K 7/09 (2006.01); H02K 21/12 (2006.01)
CPC H02K 16/04 (2013.01) 18 Claims
OG exemplary drawing
 
1. An electric machine comprising:
a housing;
a radial motor located inside the housing, the radial motor configured to produce radial flux in a first direction, wherein the radial flux influences a first magnetic unit to produce a first torque on a rotor arm attached to a common motor shaft;
an axial motor located on a first side of the radial motor inside the housing and inside the radial motor, wherein the axial motor is configured to produce axial flux in a second direction, wherein the axial flux influences a second magnetic unit to produce a second torque on the rotor arm attached to the common motor shaft;
a gear set located on a second, opposing side of the radial motor inside the housing, wherein the gear set is affixed to both the common motor shaft and an output shaft aligned with the common motor shaft;
a propeller affixed to the output shaft; and
a controller or load configured to independently control the first torque and the second torque.