A first time-resolved pressure-sensitive paint (PSP) test campaign at the European Transonic Wind Tunnel (ETW) was conducted within the research initiative “Unsteady flow and interaction phenomena at High Speed Stall conditions”. One of the objectives of this wind tunnel campaign was to resolve time-series of surface pressure distributions caused by complex 3-D buffet phenomena on a full-span airplane model XRF-1 transport aircraft configuration. At higher angle-of-attack and high Mach number, pressure fluctuations with a frequency of several hundred Hertz are expected to occur on the main wing and the horizontal tail plane (HTP) caused by the buffet effect. To capture the expected buffet phenomena by PSP, the German Aerospace Center developed a time-resolved PSP measurement and data acquisition system as well as a post-processing method for measurements in ETW. The measurements were conducted on the main wing and HTP simultaneously, with a camera frame rate of up to 2 kHz. The transonic buffet phenomena were observed at the flight relevant Reynolds number Re = 12.9 × 106 and Re = 25.0 × 106. The time-varying surface pressure distribution on the model was successfully captured by PSP. The time-series and spectra of both PSP and pressure transducer data match very well.


    Access

    Download


    Export, share and cite



    Title :

    Time-resolved pressure-sensitive paint measurements for cryogenic wind tunnel tests


    Additional title:

    CEAS Aeronaut J


    Contributors:

    Published in:

    Publication date :

    2024-01-01


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Open System Pressure Sensitive Paint for Surface Pressure Measurements in a Cryogenic Wind Tunnel

    Sakaue, H. / Sullivan, J. / Egami, Y. et al. | British Library Conference Proceedings | 2001



    Novel pressure-sensitive paint for cryogenic and unsteady wind tunnel testing

    Asai, Keisuke / Amao, Yutaka / Iijima, Yoshimi et al. | AIAA | 2000


    Novel Pressure-Sensitive Paint for Cryogenic and Unsteady Wind-Tunnel Testing

    Keisuke Asai / Yutaka Amao / Yoshimi Iijima et al. | AIAA | 2002