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Measurement of the Flow Field Generated by Multicopter Propellers
Zbigniew Czyż1, Paweł Karpiński2, Wit Stryczniewicz3
1Aeronautics Faculty, Military University of Aviation, 08-521 Dęblin, Poland.
Sensors (Basel, Switzerland)
|September 30, 2020
Summary
Researchers studied multirotor aircraft airflow using particle image velocimetry. They mapped velocity fields to understand propeller and fuselage impact across different angles of attack and airflow velocities.
Area of Science:
- Aerospace Engineering
- Fluid Dynamics
- Unmanned Aerial Systems (UAS)
Background:
- Understanding airflow dynamics is critical for multirotor aircraft performance and stability.
- Previous studies often lack detailed velocity field analysis around the aircraft body and rotors.
Purpose of the Study:
- To quantitatively and qualitatively analyze the airflow velocity field around a multirotor aircraft.
- To determine the influence of angle of attack and airflow velocity on the flow field.
- To define the aerodynamic impact range of propellers and fuselage.
Main Methods:
- Wind tunnel testing was employed to simulate airflow conditions.
- Particle Image Velocimetry (PIV) was utilized for detailed velocity field measurements.
- Analysis focused on the vertical plane through the propeller axis at various angles of attack (0 m/s and 12.5 m/s airflow velocities).
Main Results:
- Velocity distributions and components were mapped, revealing the extent of propeller and fuselage aerodynamic influence.
- The study quantified airflow characteristics through the horizontal rotor.
- Significant impact of airflow velocity and angle of attack on the velocity field was observed.
Conclusions:
- The research provides crucial data on multirotor aircraft aerodynamics, particularly the interaction between rotors, fuselage, and external airflow.
- Findings aid in optimizing multirotor design for improved efficiency and stability.
- The study highlights the importance of considering angle of attack and airflow velocity in aerodynamic analyses.
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