24th Congress of International Council of the Aeronautical Sciences, 29 August-3, September 2004, Yokohama, Japan
Paper ICAS 2004-2.2.1

NUMERICAL ANALYSIS OF FREE-TO-ROLL WING ROCK MOTION BY THE FLUID DYNAMICS-FLIGHT DYNAMICS COUPLING

M. Hirano , K. Miyaji *
Grad. School of Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501 Japan; * Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501, Japan

Keywords: Delta wing, Unsteady aerodynamics, Computational Fluid Dynamics

A self-excited rolling oscillation of a delta, which is known as a wing rock, is simulated by incorporating a time-accurate CFD with an equation of motion of the wing. A limit cycle oscillation and the hysteresis in the roll-angle vs. rolling-moment plane are successfully reproduced in the simulation.

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