小展弦比飞翼构型飞机短周期品质评定方法  

Qualities Assesses Criterion of Short Period Mode for Flying Wings with Low Aspect-Ratio

作　　者：李淼[1] 王立新[1] 李林[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100191

出　　处：《飞行力学》2009年第5期21-24,共4页Flight Dynamics

基　　金：教育部新世纪优秀人才支持计划资助(NCET-05-0191)

摘　　要：小展弦比飞翼构型飞机采用无尾翼身融合布局,导致其本体动态特性较差,更依赖于控制系统的作用,早期制定的M IL—STD—1797品质评定准则已不完全适用。通过研究带宽准则和回落量准则的品质边界,提出了一种适用于评定飞翼构型飞机短周期品质的联合评定方法,并可得到较准确的品质评定结果。研究方法和结论对指导此类新布局飞机的初步设计和飞行品质评定等都具有一定的参考价值。Low aspect-ratio flying wing adopts tailless blended-wing-body configuration,it led to poor body damping ratios,and the control system has an important influence,the early established assesses criterions of MIL-STD-1797 may apply incompletely.The flying qualities boundaries of bandwidth criterions and dropback criteria were researched.A new associated criterion is proposed,and it is applied to the low aspect-ratio flying wing,the assessed results of short period are exact relatively.This research methods and results have important reference meaning in the new configuration aircraft＇s preliminary design and flying qualities assesses.

关 键 词：飞翼构型 短周期 带宽准则 回落量准则 

分 类 号：V212.1[航空宇航科学与技术—航空宇航推进理论与工程]