In the framework of the Design & Development (D&D) Phase of the NH90 helicopter programme, a wind tunnel test project is being carried out using various sub-scale models to determine the aerodynamic behaviour of the vehicle. The NH90 helicopter is being developed in a cooperative programme by four European nations: France, Germany, Italy and The Netherlands. NLR, in close cooperation with DLR and DNW has successfully completed testing of a powered NH90 helicopter model (scale 1:4) in the Large Low speed Facility of the German Dutch Windtunnel DNW. A unique feature of the wind tunnel model was the integration of a scaled down powered rotor system and engine flow simulation module in one test set-up. The model allowed simulataneous gathering of both rotor and installed engine performance data. Prior to wind tunnel testing, the model was subjected to a series of elaborate functional tests. The wind tunnel tests were primarily aimed at evaluating the engine air intake characteristics, exhaust gas recirculation and IR signature. Testing was performed in a wide range of forward, sideward and rearward flight conditions. A large number of test parameter were acquired, ranging from rotor quantities like hub and blade loads, and rotor blade angles (pitch, flap and lead-lag) to air intake pressure distribution, exhaust gas and fuselage skin temperature. A high level of repeatability of the most import test parameters was achieved, demonstrating the quality of test results gained.


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    Title :

    NH90 Helicopter Model Rotor and Engine Installation Wind Tunnel Test in DNW


    Contributors:
    C. Hermans (author) / J. Hakkaart (author) / J. Kooi (author) / H. J. Langer (author)

    Publication date :

    1997


    Size :

    10 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




    NH90 Helicopter Model Rotor and Engine Installation Wind Tunnel Test in DNW

    Hermans, C. / Hakkart, J. / Kooi, J. et al. | British Library Conference Proceedings | 1997



    NH90 helicopter model rotor and engine installation wind tunnel test in DNW

    Hermans, C. / Hakkaart, J. / Kooi, J. et al. | Tema Archive | 1997


    NH90 Helicopter Development Wind Tunnel Programme

    C. Hermans / J. Hakkaart / G. Panosetti et al. | NTIS | 1997


    The NH90 Helicopter Development Wind Tunnel Programme

    Hermans, C. / Hakkaart, J. / Panosetti, G. et al. | British Library Conference Proceedings | 1997