南京航空航天大学学报（英文版）2007，Vol.24Issue(4)：276-282,7.
利用几何遗传方法优化前缘翼根延伸的外形以增强飞行器升力系数和机动性
AIRCRAFT LIFT AND MANEUVERABILITY ENHANCEMENT BY GENETIC GEOMETRY OPTIMIZATION OF LEX CONFIGURATION
摘要
Abstract
To enhance the maneuverability of the selected aircraft model, a standard genetic algorithm (GA) is used as an optimization method for the preliminary design of the leading-edge extension (LEX) layout. The aerodynamic loads and the maximum lift coefficient of the complete aircraft configuration (fuselage+wing+tail) are computed by using the modified three-dimensional low-order panel method in conjunction with the semi-empirical formulas of DATCOM. Results show that the lift coefficient increases approximately 20.5 %-15.3 % for Mach number 0.4-0.8 and 6.8 % for Mach number 1.2, and its maximum value approximately 9.5 %-15.0 % for Mach number 0.2-0.95 when LEX is installed. A 6.6 %-8.0 % gain at altitudes of 1-5 km on the turn rate maneuverability and the corner speed have been achieved in the subsonic regime.关键词
前缘翼根延伸/升力系数/机动性/遗传算法Key words
leading-edge extension (LEX)/ lift coefficient/ maneuverability/ genetic algorithm分类
航空航天引用本文复制引用
Abbas L K,陈前..利用几何遗传方法优化前缘翼根延伸的外形以增强飞行器升力系数和机动性[J].南京航空航天大学学报（英文版）,2007,24(4):276-282,7.基金项目
国家自然科学基金(10572059)资助项目. （10572059）
