24th Congress of International Council of the Aeronautical Sciences, 29 August-3, September 2004, Yokohama, Japan
Paper ICAS 2004-6.11.3

NUMERICAL ANALYSIS OF INTERACTION NOISE BETWEEN MAIN ROTOR AND TAIL ROTOR OF A HELICOPTER

C. Yang, T. Aoyama, S. Saito
Japan Aerospace Exploration Agency (JAXA), Japan

Keywords: main-rotor/tail-rotor interaction, CFD, interaction noise, overlapped grid system

Unsteady calculation of the interaction between tail-rotor and main-rotor wake of helicopter is conducted using an overlapped grid method. A moving overlapped grid system is used with three types of grid including rotor grid, inner background grid and outer background grid for helicopter flight simulation.

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