TY - GEN
T1 - Experimental investigations of the lift frequency response at high angles of attack
AU - Zakaria, Mohamed Y.
AU - Taha, Haithem E.
AU - Hajj, Muhammad R.
N1 - Publisher Copyright:
© 2015 by Mohamed Yehia Zakaria. Published by the American Institute of Aeronautics and Astronautics, Inc.
PY - 2015
Y1 - 2015
N2 - In comparison to the numerous theoretical research reports on the unsteady nonlinear aerodynamics, there has been very few experimental data available for validation purposes; particularly, at high angles of attack (40° and higher). We perform experiments on an oscillating two-dimensional NACA 0012 airfoil at various reduced frequencies (0.1 ≤ k ≤ 0.9) and mean angles of attack (0° ≤ α0 ≤ 65°) that undergoes a plunging motion. For each case of the mean angle of attack, th s plunging motion is performed with a small amplitude at different frequencies to determine the frequency response of the dynamics. The objective is to assess the effects of the mean angle of attack on the flow dynamics and determine specific aspects associated with unsteady motions at high values of the angle of attack and the reduced frequency.
AB - In comparison to the numerous theoretical research reports on the unsteady nonlinear aerodynamics, there has been very few experimental data available for validation purposes; particularly, at high angles of attack (40° and higher). We perform experiments on an oscillating two-dimensional NACA 0012 airfoil at various reduced frequencies (0.1 ≤ k ≤ 0.9) and mean angles of attack (0° ≤ α0 ≤ 65°) that undergoes a plunging motion. For each case of the mean angle of attack, th s plunging motion is performed with a small amplitude at different frequencies to determine the frequency response of the dynamics. The objective is to assess the effects of the mean angle of attack on the flow dynamics and determine specific aspects associated with unsteady motions at high values of the angle of attack and the reduced frequency.
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U2 - 10.2514/6.2015-1503
DO - 10.2514/6.2015-1503
M3 - Conference contribution
AN - SCOPUS:84982975728
SN - 9781624103438
T3 - 53rd AIAA Aerospace Sciences Meeting
BT - 53rd AIAA Aerospace Sciences Meeting
T2 - 53rd AIAA Aerospace Sciences Meeting, 2015
Y2 - 5 January 2015 through 9 January 2015
ER -