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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Optical measurement of the flow field around the aerodynamic profile in flutter regime
 Vlček, Václav ; Kozánek, Jan ; Zolotarev, Igor
In the aerodynamic tunnel of the IT CAS, the interferometric measurement of the flow field around the NACA0015 profile in flutter regime was realized. The used profile with two-degree-of-freedom moved in the vertical direction to the flow direction and rotated around the elastic axis in 1/3 of the profile chord. The Mach number for the self-excitated profile vibration was 0.45. The profile kinematic, acting forces and moments during the self-excitation are presented.
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The self-excited vibration of the NACA0015 profile
 Vlček, Václav ; Zolotarev, Igor ; Kozánek, Jan
The two-dimensional flow patterns around the profile NACA0015 vibrating in self-excitation modes were measured in the wind tunnel by optical methods. The Mach numbers for the self-excited vibrations were in the interval 0.2 – 0.45. Results of the interferometric measurement and the profile kinematic movements during the self-oscillations are presented.
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