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首页> 外文会议>International Astronautical Congress >OVERHAUL APPROACH IN SPACECRAFT PROPULSION; THINKING BEYOND CHEMICAL PROPULSION AN EVOLUTIONARY TREND IN AEROSPACE PROPULSION
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OVERHAUL APPROACH IN SPACECRAFT PROPULSION; THINKING BEYOND CHEMICAL PROPULSION AN EVOLUTIONARY TREND IN AEROSPACE PROPULSION

机译：航天器推进的大修方法;超越化学推进的思考航空推进中的进化趋势

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All spacecraft prolusion systems are primarily rooted on Newton's third law of motion. For the past 40 years spaceflight has highly evolved, however little advances have been translated to the propulsion systems. The force and efficiency of a propulsion system can then be quantified by the terms thrust and specific impulse respectively. Thrust is simply a measure of the force exerted on the spacecraft which allows it to fly. Specific impulse is defined as the ratio of the thrust to the flow rate of weight (of the propellant) ejected. While different fuels have been used, and current rocket engines are more high-tech than their early predecessors, the basic concepts involved are basically the same. Current space propulsion systems rely on bell-chambered chemical propulsion, and it would still take almost as much time to send a person to the moon as it did in 1969. However with a currently redefined view of space exploration that is accommodating thought of potential asteroid mining, space tourism, and faster space probes, new demands have been placed on the propulsion systems to achieve higher thrust and specific impulse. The innovative solution lies in two major technologies that have rapidly developed in this era of technology; plasma and nuclear propulsion. This paper will give an insight in plasma propulsion in light of Variable Specific Impulse Magnetoplasma Rocket (VASIMR), in which an electric power source is used to ionize fuel into plasma. The paper will also give an focus on dynamics of plasma propulsion and the overall ramifications of plasma propulsion. In nuclear propulsion, there are three kinds of propulsion that have been conceptualized and tested up to today; The designs include nuclear pulse propulsion, thermal nuclear propulsion, and nuclear electric propulsion. Pulse propulsion involves the detonation of fission bombs behind a spacecraft to generate thrust. Thermal nuclear and electric nuclear both utilize fission reactor technology to generate energy. In thermal nuclear systems, the heat energy created by the reactor takes the place of the liquid hydrogen in chemical rockets. Nuclear electric designs use a fission reactor to generate electricity which is then expelled out the back of the spacecraft as ions in order to create propulsion. Each of this kind of engines has its perks, and challenges are to be substantially analyzed in this paper.
机译：所有航天器繁殖系统主要植根于牛顿的第三条运动法。在过去的40年里，太空飞行高度发展，然而，对于推进系统而言，很少的进步。然后可以分别通过术语推力和特异性脉冲量来量化推进系统的力和效率。推力只是一种施加在宇宙飞船上的力的衡量标准，这允许它飞行。具体的脉冲定义为弹出的重量流量（推进剂）的箭头的比率。虽然已经使用了不同的燃料，但目前的火箭发动机比早期的前辈更高的高科技，但所涉及的基本概念基本相同。目前的空间推进系统依靠钟声化学推进，并且在1969年，它仍然需要几乎时间才能将一个人送到月球上。但是，目前正在重新定义的空间探索视图，这是适应潜在的小行星的思想采矿，太空旅游和更快的空间探头，推进系统已经放置了新的需求，以实现更高的推力和特定冲动。创新解决方案位于技术时代迅速发展的两种主要技术;血浆和核推进。本文将鉴于可变特异性脉冲磁导体火箭（VASIMR）的血浆推进，其中电源用于将燃料电离到等离子体中。本文还将重点关注血浆推进的动态和血浆推进的整体后果。在核动力推进中，有三种推进已经概念化并测试了今天;设计包括核脉冲推进，热核推进和核电推进。脉冲推进涉及在航天器后面的裂变炸弹爆炸以产生推力。热核电和电核均采用裂变反应器技术产生能量。在热核系统中，由反应器产生的热能取代了化学火箭中的液体氢气。核电设计使用裂变反应器来产生电力，然后将航天器的后部驱出为离子以产生推进。这些引擎中的每一个都有其特权，在本文中基本上分析了挑战。

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