||
本文为美国加州理工州立大学(作者:William Beaman Howe)的硕士论文,共125页。
提出了一种改进传统设计过程的遥控无人机尺寸确定方法。这种方法允许非常规动力飞机在初始设计阶段进行权衡研究的选择。通过创建一个设计矩阵,显示远程驱动飞机在设计空间中是否适合。对于给定的距离和功率要求,设计矩阵使用历史数据来确定内燃机或电气系统是否最合适。历史数据的趋势显示,这两种系统之间的设计间距大约为30英里和1千瓦。电气系统分为机载能源和远程能源两大类。在这项工作中,只有电池被认为是一种机载能源,但激光和微波都被认为是远程能量传输的方法。将传统的尺寸方法调整为基于能耗而不是燃油消耗。利用微波和激光在大气中传播的方式,估计了接收装置的重量比例,然后将其与尺寸法一起使用,以确定飞机的总起飞重量。这种新的尺寸设计方法用于对电池系统、微波系统和激光系统进行比较分析。
A method for sizing remotely powered unmanned aerial vehicles is presented to augment the conventional design process. This method allows for unconventionally powered aircraft to become options in trade studies during the initial design phase. A design matrix is created that shows where, and if, a remotely powered vehicle fits within the design space. For given range and power requirements, the design matrix uses historical data to determine whether an internal combustion or electrical system would be most appropriate. Trends in the historical data show that the break in the design space between the two systems is around 30 miles and 1 kW. Electrical systems are broken into subcategories of onboard energy sources and remote power sources. For this work, only batteries were considered as an onboard energy source, but both lasers and microwaves were considered for remote power transmission methods. The conventional sizing method is adjusted to so that it is based on energy consumption, instead of fuel consumption. Using the manner in which microwaves and laser propagate through the atmosphere, the weight fraction of a receiving apparatus is estimated. This is then used with the sizing method to determine the gross takeoff weight of the vehicle. This new sizing method is used to compare battery systems, microwave systems, and laser systems.
Archiver|手机版|科学网 ( 京ICP备07017567号-12 )
GMT+8, 2024-9-24 06:04
Powered by ScienceNet.cn
Copyright © 2007- 中国科学报社