The flowfield of a helicopter is very complex, and, for example, there is the mutual aerodynamic interference between the main rotor and the airframe and between the main rotor and the tail rotor, as well as between the airframe and the tail rotor. The strength of the interaction depends on the relative position and proximity of the individual components, size, shape, type of the wake geometry, and flight conditions. A method for analyzing the mutual aerodynamic interaction between a rotor and an airframe model has been developed. This technique models the rotor implicitly through the source terms of the momentum equations. A three-dimensional, incompressible, laminar, Navier-Stokes solver in cylindrical coordinates was developed for analyzing the rotor-airframe problem. The calculations are performed on a simplified rotor-airframe model at an advance ratio of 0.1. The airframe surface pressure predictions are found to be in good agreement with wind-tunnel test data. Results are also presented for velocity and pressure field distributions in the wake of the rotor.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Navier-Stokes calculations of rotor-airframe interaction in forward flight


    Additional title:

    Navier-Stokes-Berechnungen von Rotor-Rumpf-Wechselwirkungen im Vorwärtsflug


    Contributors:

    Published in:

    Publication date :

    1995


    Size :

    11 Seiten, 23 Bilder, 1 Tabelle, 24 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





    Navier-Stokes calculations of rotor-airframe interaction in forward flight

    Zori, Laith A. J. / Rajagopalan, R. Ganesh | NTRS | 1995


    Studies of rotor-airframe interactions in forward flight

    KOMERATH, N. / MCMAHON, H. / HUBBARTT, J. | AIAA | 1985


    Prediction of aerodynamic rotor-airframe interactions in forward flight

    Mavris, D.N. / Komerath, N.M. / McMahon, H.M. | Tema Archive | 1989


    Navier-Stokes Analysis for Engine Airframe Integration

    Chaput, E. / Barrera, L. / Gacherieu, C. et al. | British Library Online Contents | 1996