Journal
JOURNAL OF AEROSPACE ENGINEERING
Volume 34, Issue 6, Pages -Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)AS.1943-5525.0001307
Keywords
Rotor-wing interaction; Low Reynolds number; Analytical model; Actuator disk theory
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This study discusses experimental data and models for single-rotor-wing interactions at low disk loadings and low Reynolds numbers for tiltrotor-like vehicles. The results show that the analytical model based on actuator disk theory and other methods compares well with experimental data in terms of hover performance and download force, providing useful information for preliminary design studies.
Hover performance for tiltrotor-like vehicles lacks experimental data and computationally efficient models for single-rotor-wing interactions at low disk loadings and low Reynolds numbers. As such, this paper discusses a rotor-wing interaction experiment near the micro-air-vehicle (MAV) regime (Reynolds number <100,000 and disk loading <100 N/m(2)). The experiment and corresponding analysis examine the effect of rotor height and rotor disk coverage in terms of hover performance and download force on the wing. Also, the paper details the development of a potential flow solution for single-rotor-wing interactions based on actuator disk theory, image vortices, and momentum theory. The analytical model only requires the rotor radius, which assists in preliminary design studies on tiltrotor-like vehicles. The analytical results compare well with the experimental data in terms of magnitude and trend. (C) 2021 American Society of Civil Engineers.
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