摘要
飞机柔度增加对飞机飞行品质特性有较大影响,传统针对刚性飞机飞行品质的评价指标不能满足柔性飞机飞行品质的评价。研究分别建立刚性和柔性飞机飞行动力学线化模型,并对比两者的频域与时域响应曲线,分析刚性飞机和柔性飞机的性能。针对柔性飞机飞行品质评价指标的不足,对已有CAP(control anticipation parameter)准则中的指标进行修正,将结构模态频率引入评价指标公式。分别计算刚性飞机和柔性飞机CAP值与阻尼比关系曲线。对比发现,高速、大柔性飞机CAP值相对刚性飞机CAP值偏离较大,影响飞机飞行品质。
The increase in aircraft flexibility has a great impact on aircraft flight quality.The traditional evaluation index of flight quality for rigid aircraft cannot meet the flight quality evaluation for the flexible aircraft.In this paper,the rigid and flexible aircraft linearized flight dynamics models are established respectively.The frequency-domain and time-domain response are compared to analyze the performance of rigid and flexible aircraft.Aiming at the deficiency of the existing flight quality evaluation index for flexible aircraft,the existing control anticipation parameter（CAP）evaluation index is modified and the structural modal frequency is introduced into the evaluation index formula.The CAP values of the rigid aircraft and the flexible aircraft are calculated respectively.The results show that the CAP value of the high speed and large flexible aircraft is larger than that of the rigid aircraft,which might affect the flight quality level.
作者
张聪
谭溥学
李道春
董昊
向锦武
ZHANG Cong 1, TAN Puxue 2, LI Daochun 2, DONG Hao 2, XIANG Jinwu 2(1. Chinese Flight Test Establishment, Xi’an 710089, China; 2. School of Aeronautic Science andEngineering, Beihang University, Beijing 100191, China)
出处
《中国科技论文》
CAS
北大核心
2018年第5期533-536,541,共5页
China Sciencepaper
基金
高等学校博士学科点专项科研基金资助项目(20131102120014)
航空科学基金资助项目(20141351017)
关键词
飞行力学
柔性飞机
飞行品质
CAP准则
flight dynamics
flexible aircraft
flight quality
CAP criterion
