欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
高超声速巡航飞行器（HCV）是21世纪国际空天技术竞争的焦点,它的飞行性能可以用初始发射质量与广义有效载荷之比衡量.文献[1]建立了该性能的耦合分析框架.在这个框架下进一步考虑了离心力和滑翔距离两个重要因素的影响.定量分析表明：给定飞行距离,对HCV飞行性能影响最大的是巡航速度,其次是升阻比,再次是巡航发动机比冲.随着飞行距离的增加,由于离心力和滑翔距离的计入,火箭动力HCV的飞行性能大幅提高,从近中程到远程均显著优于经典的最小能量弹道.吸气式冲压发动机尽管比冲大幅优于火箭发动机,但在巡航速度适用范围和飞行器升阻比方面,均不及后者.综合而言,火箭动力HCV是现阶段非常有竞争力的选择.
英文摘要：
The flight performance of hypersonic cruise vehicles（HCVs）,a competitive focus of international aerospace technologies in the 21^st century,can be measured by a ratio of the initial boost mass to the generalized payload.A coupling frame to analyze the performance was established in Ref.[1].Under the frame,two important effects,namely the centrifugal force and glide distance,have been further taken into account in this article.It was shown quantitatively that for a given distance,the first important factor to affect the flight performance of HCVs is the cruise speed,the second is the lift-to-drag ratio,and the third is the specific impulse of the cruise engine.As a flight distance increases,the performance of a rocket-based HCV,greatly improved due to the centrifugal force and glide distance taken into account,is significantly superior to the classical minimum-energy trajectory from short-middle to long range.A hypersonic air-breathing ramjet,though its specific impulse much higher than that of a rocket engine,is not so good as the latter in terms of the cruise speed range and lift-to-drag ratio.It is concluded that rocket-based HCVs flying at the optimal speed are a very competitive choice at the current stage.
同期刊论文项目
同项目期刊论文
Constrained large-eddy simulation and detached eddy simulation of flow past a commercial aircraft at
Effect of humidity on microstructure and properties of YBCO films prepared by Electron Beam Coevapor
Laser induced breakdown spectroscopy for local equivalence ratio measurement of kerosene/air mixture
Study of turbulent heat transfer of aviation kerosene flows in a curved pipe at supercritical pressu
Development of integrated high temperature sensor for simultaneous measurement of wall heat flux and
A Compact Sensor Based on Near Infrared Absorption Spectroscopy for Flow Diagnostics in a Low Densit
Numerical investigation on unsteady shock wave reflections over three dimensional intersecting wedge
期刊信息
位置：