The results of acoustics measurements on the installed and unloaded axial-flux electric motor used on the Moog SureFly® vehicle are presented and compared to previous ground run-up measurements for the vehicle. The directivity of the motor was found to be significantly different than that obtained for much smaller 2 – 4 kW radial flux motors tested previously in the Acoustic Test Laboratory at NASA Glenn. Significant radiation occurred at shaft orders between 17 and 20 and at order 30. Peak radiation levels occurred near the highest speeds expected for the vehicle. There was an indication that some of the tones appearing in the spectra obtained in the previous ground run-up test were associated with the motor.
Preliminary Analysis of Moog SureFly Electric Motor Noise Measurements
Acoustics Technical Working Group Meeting ; 2021 ; Virtual, US
Miscellaneous
No indication
English
NOISE MEASUREMENTS FROM GROUND TESTS OF THE MOOG SUREFLY VEHICLE
TIBKAT | 2021
|British Library Online Contents | 1998
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