关键词: 切尖菱形机翼, 双三角机翼, 后掠角, 展弦比, 风洞实验, 气动特性

Abstract: The aerodynamic characteristics of the cuted tip rhombus wing and double-delta wing of middling sweepback angle and aspect ratio about sixty type are investigated by a numerical method based on Eular equations. The high speed wind tunnel tests of selected sixteen cuted tip rhombus wing and fourteen double-delt wing are performed, in order to study the effects of wing plane parameters(leading edge sweepback angle,aspect ratio,taper ratio and geometric twist) on longitudinal aerodynamic characteristics. The curves of test and empirical formula for quantitative estimate longitudinal aerodynamic characteristics of this two kind wings are introduced. Researched results of this paper provide practical data and design references for constituded data-base of wing aerodynamical desing and aircraft aerodyanamical configuration research.

Key words: cuted tip rhombus wing, double-delta wing, sweepback angle, aspect ratio, wind tunnel test, aerodynamic characteristics