平流层飞艇静升力分析  

Analysis on Static Lift of Stratospheric Airship

作　　者：胡国昌[1] 夏辉[2] 吴美平[1] 

机构地区：[1]国防科技大学机电工程与自动化学院 [2]92728部队

出　　处：《计算机仿真》2010年第12期60-64,共5页Computer Simulation

摘　　要：研究飞行器在平流层定点悬停定位问题,平流层飞艇运行环境复杂多变,静升力的确定有一定难度。为保持飞行器飞行到指定高度,采用理论分析方法建立了静升力的数学模型,根据标准大气环境下平流层飞艇总静升力随飞行高度的变化规律,以及实际环境中温度变化对总静升力的影响;分析了净静升力与压差百分比、压力高度处副气囊体积比、温度和飞行高度的变化关系。利用Matlab软件平台进行了仿真分析,结果表明所建立的模型能够准确描述各因素对静升力的影响,从而为平流层飞艇的总体设计提供依据。It is difficult to calculate the static lift of the stratospheric airship for frequent variations of its working environment.Aiming at this problem,the equations of static lift for stratospheric airships were built using theoretical computing method.And then based on the discussing of the laws of total static lift varing with height in international standard atmosphere and the influence of temperature on total static lift in true atmosphere,the relationships of net static lift with difference pressure percentage,assistant ballonet volume proportion at pressure height,temperature and height were analyzed.Lastly,the simulations were carried out with Matlab platform.The results show that the equations can describe the influences of each factor on static lift,thus making itself a theoretical basis for the overall design of the stratospheric airship.

关 键 词：飞行器 平流层飞艇 静升力 压力高度 

分 类 号：V274[航空宇航科学与技术—飞行器设计]