火箭推进2024，Vol.50Issue(2)：49-56,8.DOI:10.3969/j.issn.1672-9374.2024.02.005
RBCC动力巡航飞行器爬升段弹道优化
Ascent trajectory optimization for RBCC powered cruise vehicle
摘要
Abstract
The climbing trajectory optimization of the vehicle employing rocket based combined cycle(RBCC)engine has been an important issue during the overall design.The pseudo-spectral method was employed to perform the trajectory optimization of RBCC cruise vehicle.Taking the consumption of propellant as the performance index and the flight attack angle as the design variable,the longitudinal plane trajectory optimization model of the vehicle was established.Aerodynamic characteristic of the vehicle and the performance of RBCC were obtained,then climbing trajectory of the vehicle was optimized.Results show that:optimal trajectory includes acceleration with constant height,climbing with constant dynamic pressure,climbing with constant speed,etc;rocket engine works in mode of open-close-open,and there is no need to adjust rocket thrust greatly;the range of the vehicle reaches 2 430 km under the condition of appropriate maximum mass flow rate of rocket engine and appropriate constraint of dynamic pressure.关键词
火箭基组合循环发动机/巡航飞行器/爬升段/弹道优化Key words
RBCC/cruise vehicle/climbing phase/trajectory optimization分类
航空航天引用本文复制引用
徐铮,谭建国,张冬冬..RBCC动力巡航飞行器爬升段弹道优化[J].火箭推进,2024,50(2):49-56,8.基金项目
中国科协青年人才托举工程(2022QNRC001) （2022QNRC001）
国家自然科学基金(12002372) （12002372）
湖南省自然科学基金(2021JJ40674) （2021JJ40674）
