000003664 001__ 3664
000003664 005__ 20141118153351.0
000003664 04107 $$acze
000003664 046__ $$k2013-05-13
000003664 100__ $$aVlček, V.
000003664 24500 $$aUNSTEADY AERODYNAMIC FORCES MEASURED ON A FLUTTERING PROFILE

000003664 24630 $$n19.$$pEngineering Mechanics 2013
000003664 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Praha
000003664 506__ $$arestricted
000003664 520__ $$2eng$$aThe evaluations of optical measurements of the flow field near the fluttering profile NACA0015 with two-degrees of freedom are presented. Mach number of the airflow was M = 0.21 and M = 0.45, the boundaries of the flutter occurrence. Aerodynamic forces acting on the profile were evaluated in the drag and lift components which enabled to obtain independently the forces corresponding to the upper and lower surfaces of the profile. Using the mentioned decomposition, the new information about mechanism of flutter properties was obtained. The force effects on the upper and lower surfaces are in opposite phases and they are partially eliminated as a result of the circulation around the profile. The cycle changes of this forces cause the permanent energy contribution from the airflow to the vibrating system

000003664 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000003664 653__ $$a

000003664 7112_ $$aEngineering Mechanics 2013$$cSvratka (CZ)$$d2013-05-13 / 2013-05-16$$gEM2013
000003664 720__ $$aVlček, V.$$iKozánek, J.$$iZolotarev, I.
000003664 8560_ $$ffischerc@itam.cas.cz
000003664 8564_ $$s1807788$$uhttps://invenio.itam.cas.cz/record/3664/files/057_Vlcek_V-FT.pdf$$y
             Original version of the author's contribution as presented on CD, DYN.
            
000003664 962__ $$r3632
000003664 980__ $$aPAPER