Numerical Analysis of Tonal Noise Emissions from Open and Shrouded Contra-Rotating Propellers

As market growth projections for Urban Air Mobility vehicles (UAMs) skyrocket, their presence in urban environments is likely to become increasingly prevalent, as will their noise. This creates a disturbance to both humans and wildlife, previously unaffected by aircraft noise. Further reinforcing the concern is the new multi-rotor designs, which...

An Integrated System for Live Characterization and Adaptive Compensation of Ultrasonic Transducers

Ultrasonic transducers are commonly used in a variety of medical, industrial, and consumer devices, con- verting electrical energy into high-frequency sound waves. These devices find extensive applications in fields such as medical imaging, non-destructive testing, distance measurement, and cleaning processes. However, these transducers suffer...