A significant amount of research was devoted to understanding the mechanism of dynamic stall delay as applicable to the flow environment of a helicopter rotor in forward flight. One aspect of such research deals with the unsteady characteristics of two-dimensional airfoil sections over a Mach number range from 0.3 to 9.6, since such characteristics can be meaningfully related to rotor performance and loads. This paper summarizes the results of several oscillatory tests carried out on conventional, transonic and BLC-equipped airfoils.
Observations on the dynamic stall characteristics of advanced helicopter rotor airfoils
1978-01-01
Conference paper
No indication
English
Investigations of dynamic stall and dynamic stall control on helicopter airfoils
TIBKAT | 2015
|Modern Testing Approaches Used to Characterize Dynamic Stall Regimes on Helicopter Airfoils
British Library Conference Proceedings | 2015
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