Proceedings ArticleDOI
Propeller Performance Measurement for Low Reynolds Number UAV Applications
TLDR
An Integrated Propulsion Test System (IPTS) has been designed, developed and validated at Wichita State University, and a reliable database of performance data has been created.Abstract:
The recent boom in Unmanned Aerial Vehicles (UAV) and Micro Air Vehicles (MAV) aircraft development creates a strong demand for accurate small-diameter propeller performance data. Small-diameter propellers as defined in this paper (diameter 6 inches to 22 inches), operate at low Reynolds numbers (typically between 30,000 and 300,000), rendering performance scaling from larger counterparts inaccurate. An Integrated Propulsion Test System (IPTS) has been designed, developed and validated at Wichita State University (WSU). A large number of propellers have been tested and a reliable database of performance data has been created. This paper discusses the salient features of this measurement system and propeller test data for a few propellers.read more
Citations
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Proceedings ArticleDOI
Propeller Performance Data at Low Reynolds Numbers
John Brandt,Michael S. Selig +1 more
TL;DR: In this article, the propeller speed (RPM) was fixed while changing the wind-tunnel speed to sweep over a range of advance ratios until reaching the windmill state (zero thrust).
Proceedings ArticleDOI
Experimental Study of Quadcopter Acoustics and Performance at Static Thrust Conditions
Nanyaporn Intaratep,William N. Alexander,William J. Devenport,Sheryl M. Grace,Amanda Dropkin +4 more
TL;DR: Results of 4-rotor operation show that tones at the blade passing frequency, shaft rate and their harmonics dominate the quadcopter acoustic spectrum up to 6000 Hz without much deterioration and a significant increase was found in broadband noise when switching from 2 non-adjacent rotors to 4 rotors.
Proceedings ArticleDOI
Reynolds number effects on the performance of small-scale propellers
TL;DR: In this article, the performance of small-scale propellers was evaluated in both static and advancing-flow conditions, and the performance improvement was seen as either an increase in the thrust coefficient, a decrease in the power coefficient, or both.
Journal ArticleDOI
A Practical Performance Evaluation Method for Electric Multicopters
TL;DR: In this article, a comprehensive offline evaluation algorithm of multicopter performance is proposed, where the performance indices considered are mainly determined by the propulsion system, including motors, propellers, electronic speed controllers, and batteries.
References
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H. Wayne Beaty,James L. Kirtley +1 more
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Proceedings ArticleDOI
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TL;DR: In this article, the effects of Reynolds number and Mach number on the performance of a full-scale propeller were investigated using a small scale model of an aircraft and the results indicated that the calculated performance is also correct at OP conditions; an assumption supported by tests on half o rnd scale models.
Journal ArticleDOI
Compact dynamometer system that can accurately determine propeller performance
Kenneth M. Asson,Patrick F. Dunn +1 more
TL;DR: In this article, a compact propeller dynamometer measurement system has been developed that determines propeller performance values to within ±5% error, and the system was tested in a low speed wind tunnel using marine and remotely piloted vehicle propellers to assess its operational capability.