南京航空航天大学学报2025，Vol.57Issue(1)：147-159,13.DOI:10.16356/j.1005-2615.2025.01.015
宽升阻比高速滑翔变体飞行器高效建模方法
Efficient Modeling Method for High-Speed Gliding Variant Aircraft with Wide Lift-to-Drag Ratio
摘要
Abstract
In order to achieve the flight performance of high-speed variant vehicles with wide lift-to-drag ratio,a new aerodynamic layout of high-speed gliding variant aircraft with wide lift-to-drag ratio is proposed and its efficient modeling method is developed.The method is based on the UG secondary development platform and adopts two-dimensional B-splines to construct the parametric system of the high-speed glider-variant aircraft,and only 27 parameters are needed to complete the aerodynamic configuration design of the whole aircraft.Numerical simulations are carried out under conditions of a wide speed range(Ma=2.5-8.5),a wide airspace(H=6-25 km),and a wide flight angle of attack(AOA=0-10°).The results show that the new variant vehicle can exhibit good performances in multi-situations,including the high-speed cruising with the lift-to-drag ratios higher than 4.7 when the wings are spread and Ma=4.0-8.5,the low-drag gliding with the drag coefficients lower than 0.02 when the wings are retracted and the angle of attack is within 5°(reduced by 20%—30%from those with spread wings),and different swept-back wing openings with a large adjustable range of lift-to-drag ratio from 0.3-4.7.The results also indicate that the wave-riding effect varies depending on the degree of the spillage between the upper and the lower surfaces of the fuselage,i.e.,the higher the spillage,the weaker the wave-riding effect.Thus,the strength of the wave-riding effect in the airframe flow direction can be decided by adjusting the opening of the swept-back wing,and the variant vehicle can fulfill various flight missions.关键词
变体飞行器/气动布局/类乘波体/参数化建模/乘波效应Key words
variable aircraft/aerodynamic layout/wave-like body/parametric modeling/wave-riding effect引用本文复制引用
孙佳鑫,靳梓康,崔景芝,闫文辉,俞宗汉..宽升阻比高速滑翔变体飞行器高效建模方法[J].南京航空航天大学学报,2025,57(1):147-159,13.基金项目
国家自然科学基金(12002162) （12002162）
北方工业大学毓秀创新项目(2024NCUTYXCX106). （2024NCUTYXCX106）
