Experimental investigation of a helicopter rotor with Gurney flaps
| Autor: | Franco Auteri, Alex Zanotti, Giovanni Droandi, Giuseppe Gibertini, G. Crosta |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Airfoil
020301 aerospace & aeronautics Chord (geometry) Rotor (electric) business.industry Aerospace Engineering 02 engineering and technology Aerodynamics Structural engineering 01 natural sciences 010305 fluids & plasmas law.invention 0203 mechanical engineering Particle image velocimetry law 0103 physical sciences Torque Helicopter rotor business Geology Gurney flap |
| Popis: | The present work describes an experimental activity carried out to investigate the performance of Gurney flaps on a helicopter rotor model in hovering. The four blades of the articulated rotor model were equipped with Gurney flaps positioned at 95% of the aerofoil chord, spanning 14% of the rotor radius. The global aerodynamic loads and torque were measured for three Gurney flap configurations characterised by different heights. The global measurements showed an apparent benefit produced by Gurney flaps in terms of rotor performance with respect to the clean blade configuration. Particle image velocimetry surveys were also performed on the blade section at 65% of the rotor radius with and without the Gurney flaps. The local velocity data was used to complete the characterisation of the blade aerodynamic performance through the evaluation of the sectional aerodynamic loads using the the control volume approach. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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