In the framework of the Design & Development (D&D) phase of the NH90 helicopter programme,a wind tunnel test programme is carried out using various subscale models to determine the aerodynamic behaviour of the vehicle. The NH90 helicopter is being developed in a co-operative programme by four European nations: France, Germany, Italy and The Netherlands. One of the test activities performed in the D&D phase of the NH90 programme included testing a scale 1:4 model equipped with a powered main rotor in the German-Dutch Wind DNW. The model comprises of a fuselage hull, powered main rotor and engine air intake and exhaust systems. Powered tail rotor model tests were performed in the DNW-LST to assess the tail rotor efficiency at extreme sidewind conditions. Nine test campaigns are performed with a fuselage model in the DNW-LST. At ECF a recirculation model was used to evaluate the exhaust gas reingestion in the air intakes and airframe heating. Detailed engine air intake flow characteristics were obtained using a dedicated engine intake model. The paper gives an overview of the wind tunnel models applied. Model instrumentation and measurement techniques are highlighted.


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    Titel :

    NH90 Helicopter Development Wind Tunnel Programme


    Beteiligte:
    C. Hermans (Autor:in) / J. Hakkaart (Autor:in) / G. Panosetti (Autor:in) / G. Preatoni (Autor:in) / V. Mikulla (Autor:in)

    Erscheinungsdatum :

    1997


    Format / Umfang :

    14 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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