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我们的空间计划证明是很成功的,因此空间对我们未来的重要性已被人们所认识。空间系统越系越重要,因为它能够提供人类所必需的服务,如通讯、导航和空中监视。人们可以从空间获得许多新的利益,但就目前的系统来看,还不可能得到经济效益。由于各国越来越依赖于轨道系统,因此它们的操作能力及运输系统的形式越来越引起人们的关注。仅在20年的空间活动中,地球周围的空间就已分布了上千个人造物,这对今后的空间航行是有害的。空间活动正处于相对年轻阶段。自然,用于早期空间活动的技术也不尽成熟。令人意想不到的是,即使是还处在研制阶段的最新的运载器,如改进的里那安5P 和日本的H 火箭系统,也几乎没有利用近15年内出现的先进推进技术。除航天飞机外,所有目前的运载器都不能重复使用。航天飞机比较先进,且能把人和科学仪器送到空间并安全返回地球。航天飞机的研制和先进推进技术的应用始于15年前,但由于它的复杂性和高操作费用,航天飞机的应用受到限制,并且不能满足未来计划提出的发射要求。本文将概述现有运载系统的缺陷,指出需进行一些改进以满足未来的需要,并对重量和性能进行充分的比较研究,以提高使用寿命和降低操作费用。本文还对现有运载系统和它们满足未来载荷需要的适应性进行了讨论。指出必须利用过去20年出现的在推进装置和运载器方面出现的新技术。最后,提出了可全部重复使用的模块式运载系统的方案,这种运载系统可满足从小到大各种推力的要求,可发射不等重量的有效载荷。
Our space program proves to be very successful, so the importance of space for our future has been recognized. The more important the space system is, the more it provides human services such as communications, navigation and air surveillance. There are many new benefits that people can gain from space, but economic benefits can not yet be achieved with current systems. As countries increasingly rely on orbital systems, their operational capabilities and the form of transport systems are attracting increasing attention. In just 20 years of space activity, thousands of artifacts have been distributed around the Earth’s space, which is detrimental to future space navigation. Space activities are at a relatively young age. Naturally, the techniques used for early space activities are not yet mature. Unexpectedly, even the latest vehicles under development, such as the improved Rina-5P and Japan’s H-rocket system, scarcely took advantage of advanced propulsion technologies that emerged in nearly 15 years. With the exception of the space shuttle, all current carriers can not be reused. The space shuttle is more advanced and can send people and scientific instruments to the space and return safely to Earth. Spacecraft development and advanced propulsion technology began 15 years ago, but due to its complexity and high operational costs, spacecraft applications are limited and can not meet the future planned launch requirements. This article will outline the shortcomings of existing delivery systems, point out some improvements that are needed to meet future needs, and adequately compare weight and performance to improve service life and reduce operating costs. This article also discusses the existing delivery systems and their suitability for meeting future payload needs. Stating that it is essential to capitalize on the new technologies that have emerged over the past two decades in advancing devices and carriers. Finally, a modular reusable modular delivery system is proposed. The delivery system can meet various thrust requirements from small to large, and can transmit unequal weight payloads.