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人们把越来越多的注意力集中到长期侦察、监视和通信用的无人驾驶的机载遥感器平台上.直到最近由于军事的需要和应用推动了大多数的这种活动.对这种飞机的初步性能和设计分析认为一些技术是可以实现的,并且飞机设计原理和基本的工作特性是有竞争力的.当各种原理和关键技术成熟时,显然在民用领域中存在这类飞机的应用.特别是在高度超过18公里(590000英尺)时,能长期飞行(最少几夭)的固定翼高空动力平台(HAPP)提供唯一的能力.在本地区或陆地区域范围上,如果选定的高空动力平台不连续观察周期,那么就可以提供频繁观测.在站上长期观察大大地提高了获得无云信息的可能性,这种信息作为连续近实时数据流的一部分,很快得到处理,在几小时内供各用户使用.这种能力会提供非平行量信息,而其它方式是不能得到的.本文叙述了一些高空动力平台的基本原理,这可用其发动机方式包括微波、太阳能和化学能源来表征其特性,这种发动机到1990年可以买到.另外,指出了民用领域的一些允许任务的应用。相当详细介绍的农业监视任务说明了唯一的特性,这种性能有益于常规飞机或沿轨道运行的航天器。
More and more attention has been focused on unmanned airborne remote sensing platforms for long-term reconnaissance, surveillance and communications until most such activities have been promoted by military needs and applications recently. The preliminary performance and design analysis of the aircraft considers that some technologies are achievable and the aircraft design principles and basic operating characteristics are competitive.When the various principles and key technologies are ripe, it is clear that such aircraft exist in the civil domain Applications. Especially at altitudes greater than 18 kilometers (590,000 feet), the long-term (at least a few yards) fixed-wing high-altitude power platform (HAPP) provides the only ability in the region or land area, if the selected Long-term observations at stations greatly increase the likelihood of cloud-free information being quickly processed as part of a continuous near-real-time data stream, and at Within a few hours for all users.This ability will provide non-parallel amount of information, and other methods can not be obtained.This paper describes some of the basic high-altitude power platform Li this way the engine can be used which include microwave, solar energy, and chemical characteristics thereof characterized, this engine 1990 can be purchased. Further, points out some task application allows civil applications. A rather detailed agricultural monitoring mission illustrates the only feature that is good for conventional or orbiting spacecraft.