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Wright Electric completes rotor for 2.5MW aviation motor

Wright Electric reports that it had completed development of the rotor for its second-generation motor, WM2500, as part of the ARPA-E ASCEND program. WM2500 aims to be the world's most powerful (2.5 megawatts) and power-dense (16 kW/kg) electric aircraft engine.

High power enables WM2500 to deliver sufficient takeoff thrust for a large commercial aircraft. High power density facilitates a lightweight package for aviation.

A motor has two main parts: the rotor, the part that rotates, and the stator, the part that stays stationary. The rotor on WM2500 has been completed.


Wright is fabricating the stator now, with a target for final assembly of the motor this summer.

Once the motor is complete, Wright will conduct initial testing at its lab in Albany using a custom-built dynamometer. Then the team will head to the NASA Electric Aircraft Testbed (NEAT) facility for altitude chamber testing.



Sounds like significant progress towards medium haul electrified aviation.


If you're going to use four of these in a cargo transport you better have some fuel cells and liquid hydrogen

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