机翼及振动襟翼的非定常气动力计算

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1990, Vol. 11 ›› Issue (9): 515-520.

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CALCULATION OF UNSTEADY AERODYNAMIC LOADS ON WINGS WITH AN OSCILLATORY LEADING EDGE FLAP

Yuan Li¹, Lu Zhiyong¹, Wu Jianmin²

1. Beijing Universiiy of Aeronautics and Astronautics, The University of Tennessee Space InstituteJ.M.

Received:1989-03-22 Revised:1990-02-20 Online:1990-09-25 Published:1990-09-25

Abstract

Abstract: The unsteady aerodynamic loads on wings with lending edge separation in inviscid incompressible flow are calculated using vortex-lattice method. The calculated results of delta and double delta wings with oscillating L.E. flaps not only show influence upon aerodynamic response as a result of different oscillatory frequencies and hinge line swept-back angles, but also reveal the phenomena of aerodynamic lag and nonlinear interaction associated with unsteady vortex flows.

Key words: incompressible flow, unsteady flow, separation flow, nu- m erical calculation

Yuan Li;Lu Zhiyong;Wu Jianmin. CALCULATION OF UNSTEADY AERODYNAMIC LOADS ON WINGS WITH AN OSCILLATORY LEADING EDGE FLAP[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1990, 11(9): 515-520.

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CALCULATION OF UNSTEADY AERODYNAMIC LOADS ON WINGS WITH AN OSCILLATORY LEADING EDGE FLAP

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