Propeller Designs with High Efficiency for Long Range/Endurance Missions and Low Noise for Reduced Detectability

W.A. Anemaat
DARcorporation, Kansas, United States

Keywords: Propeller, Propulsion, UAV, Ducted Fan, Efficiency, Acoustics

The full process of custom propeller design and testing for efficiency and acoustics is described. Physics-based design tools are utilized in the design process, such as computational fluid dynamics (blade element momentum theory and Navier-Stokes solver) and high-fidelity structural analysis (finite element analysis). Testing for propeller efficiency and acoustics is carried out in controlled environment. Testing apparatus are carefully calibrated prior to data recording to ensure accurate results. The final deliverable is a custom propeller design(s) for improved vehicle performance.