小展弦比飞翼布局飞机稳定特性  

Stability Features of Low Aspect-Ratio Flying Wings

作　　者：李林[1] 马超[1] 王立新[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100083

出　　处：《航空学报》2007年第6期1312-1317,共6页Acta Aeronautica et Astronautica Sinica

基　　金："973"国家安全重大基础研究项目(6132004);新世纪优秀人才支持计划项目

摘　　要：飞翼布局飞机为改善隐身特性,取消了平尾和垂尾,构型的改变导致其稳定特性与常规飞机有很多不同。针对小展弦比飞翼布局飞机,分别研究其在几种典型飞行状态下的纵向和横航向的静、动稳定特性,通过与常规布局飞机进行对比,着重揭示了飞翼构型参数、飞行状态与其稳定性间的量化规律,并详细分析了这一布局纵向短周期模态及横航向荷兰滚模态发散的具体成因。Flying wings get rid of horzontal tail and vertical tail in order to reduce RCS, but the changes of configuration lead to lots of new characteristics. The longitudinal and lateral-directional stability of the low aspect-ratio flying wing in several typical conditions was researched, including static stability and dynamic stability. And effects of configuration and flight conditions on the stability features of flying wings were especially analyzed, comparing with conventional-configuration aircrafts. Also the exact reasons of the unstable short-period mode and Dutch-roll mode were specially presented.

关 键 词：小展弦比 飞翼 稳定性 短周期模态 荷兰滚模态 

分 类 号：V212.121[航空宇航科学与技术—航空宇航推进理论与工程]