Počet záznamů: 1  

Innovation of the experimental facility for the study of flutter in the Institute of Thermomechanics AS CR and some results obtained from initial experiments

  1. 1.
    0455245 - ÚT 2017 RIV CH eng J - Článek v odborném periodiku
    Vlček, Václav - Štěpán, M. - Zolotarev, Igor - Kozánek, Jan
    Innovation of the experimental facility for the study of flutter in the Institute of Thermomechanics AS CR and some results obtained from initial experiments.
    Applied Mechanics and Materials. Roč. 821, č. 2016 (2016), s. 144-151. ISSN 1660-9336
    Grant CEP: GA ČR GA13-10527S
    Institucionální podpora: RVO:61388998
    Klíčová slova: aeroelasticity * flutter * interferometry * subsonic flow
    Kód oboru RIV: BI - Akustika a kmity

    The wind tunnel of a suction type was used for experiments with the fluttering profile NACA0015. Profile has two degrees of freedom, one in rotation (pitch) and the second one in translation mode (shift). Torque elasticity was realized by the coil spring and changed by the spring length and diameter of the spring wire. The pitch angle of the profile was measured by the magnetic rotary encoder. The translation was indicated by the magnetic linear encoder and was centered by plane springs situated on both ends of the shiftable frame. With this model the testing measurement of the self-excited vibration of flutter type in the range of Mach numbers M = 0.20-0.215 and Reynolds numbers Re = (2.63-2.83)·105 was realized. Results obtained for M = 0.21 and Re = 2.76·105 are presented. The measurement was adapted for the flow field evaluation by optical methods [1]. Turbulence level was approximately 0.6 %.
    Trvalý link: http://hdl.handle.net/11104/0258682

     
     
Počet záznamů: 1  

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