The military sees a great need for small, lightweight aircraft that can be easily transported and support vertical takeoff and landing ( VTOL ) capabilities. 军方一直以来都希望能装备微型飞机,这种飞机体积小,重量轻,易于运输而且还具备垂直起降功能。
The vehicle has the following mission profile : vertical takeoff, boost-to-orbit, hypersonic re-entry and horizontal landing. 一般而言,可重复使用运载器的飞行任务剖面分为:垂直起飞(VT)、入轨、高超音速再入大气层、水平着陆几个阶段。
The horizontal drift results provide valid data for analysis of collision threat of launch vehicles to launch pad during vertical takeoff, and provide scientific basis for analyzing the reliability of launch pad structure and increasing security of the launch process. 所计算的横向漂移量为分析垂直起飞(VT)段火箭对塔架的碰撞威胁提供了有效的数据,为确定塔架结构的可靠性和提高发射过程的安全性提供了科学依据。
Ducted fan unmanned aerial vehicle has vertical takeoff and landing capabilities. It can hover as well as maneuver around without complicated launch device and call-back system, thus it has unique advantages. 涵道式无人飞行器具有垂直起降、空中悬停、前后左右机动的能力,不需要复杂的发射装置和回收系统,因此,其优势得天独厚。
To offer a cost-effective solution to the research of vision-guide algorithm for UAV ( unmanned aerial vehicle ) with vertical takeoff and landing capability, the imaging principle and imitation technology of UAV landing scenes based on the theory of machine vision was employed. 为给垂直起降无人飞行器视觉自主着舰算法研究提供经济可行的解决方案,实现了无人机自主着舰场景的软件仿真以提供算法研究中所需的合格场景图片。