The National Aeronautics and Space Administration (NASA) is seeking to acquire electric motors for a coaxial rotor, specifically two YASA 750R axial flux motors, which will be utilized in a new coaxial test stand being developed in collaboration with the Army. These motors are required to independently drive the rotors of the test stand, which is designed to operate with both air and heavy gas, and must deliver 387 Nm of continuous torque at speeds ranging from 600 to 1550 RPM, while also featuring a compact design and a large through bore for coaxial rotor shaft operation. The procurement is critical for advancing aerospace technology, and the selected contractor will also need to provide operational manuals, performance curves, and CAD drawings for the motors, with deliveries to be made to Arc Energy, LLC in Ridgeland, Mississippi. Interested organizations must submit their capabilities and qualifications in writing to Sara Jusino-Terry at sara.a.jusino-terry@nasa.gov by 12 p.m. Central Standard Time on January 27, 2025, to be considered for this sole source contract.