共查询到19条相似文献,搜索用时 31 毫秒
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载人火星探测飞行方案 总被引:1,自引:0,他引:1
对世界各国载人火星探测的研究情况进行了简要综述,研究了国内外有关载人火星探测飞行方案,提出了载人火星探测方案确定的原则和方案基本思想.给出了一种载人火星探测飞行方案的总体设计,包括飞行轨道方案和载人火星飞船方案等.尤其对轨道设计的重要的两个参数——速度增量和飞行时间进行了详细计算.最后给出了飞行轨道选择、火星飞船从地球到火星和从火星返回地球等的轨道方案和火星飞船各组成部分方案的详细设计结果. 相似文献
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正2017年12月11日,美国总统特朗普正式签署"太空政策一号令",要求美国宇航局(NASA)重启登月计划,为载人登火星奠定基础,从而彻底改变了前任美国总统奥巴马以小行星为跳板进行载人登火星的载人深空发展战略。其实,早在2017年3月,特朗普政府就终止了奥巴马当政时NASA实施的"小行星重定向任务"(ARM)。那么,什么是"小行星重定向任务"呢?奥巴马当选总统后,于2010年4 相似文献
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行星保护是影响载人火星探索任务的重要问题之一。载人探测的行星保护包括3个方面,即防止来源于地球的微生物污染目标星球的正向污染防护、防止外来生物对地球的潜在危害的逆向污染防护,以及确保航天员的健康和安全。国际宇航界已经开始针对载人火星探测的行星保护制定政策法规和开展技术研讨。本文介绍了行星保护的定义和法理依据,简要回顾了美国国家航空航天局在“阿波罗登月”中的行星保护措施,并对未来载人火星探测中的主要污染物、污染途径以及污染防护策略进行了初步探讨。 相似文献
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正"小行星重定向任务"(ARM)是美国奥巴马政府规划的近期载人航天探索目标,由机器人阶段和载人飞行阶段两部分组成。其主要任务是无人航天器在飞越地-月空间的近地小行星上收集巨型石块,并改变该石块飞行方向进入远距离月球逆向轨道,然后由载人航天器与巨型石块交会并俘获,航天员对石块进行采样返回。"小行星重定向任务"是美国载人探索火星计划的过渡性项目,旨在为21世纪30年代载人探索火星演示验证相关技术。同时,美国政府实施该项目计划的意图还在于,弥补"国际空间站"(ISS)2024年退役后的载人飞 相似文献
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近些年,美日竞相发射小行星探测器,并已取得了显著成就。另外,美国新成立的两家民间公司准备开采小行星上的宝藏,越来越多的国家或机构开始研究如何防止近地小行星撞击地球的方案。2013年4月,美国政府宣布了一个大胆设想:捕获小行星并拖至月球轨道,进而载人登陆小行星,然后把小行星用作载人登火星的中转站。所以,小行星探测十分值得关注。2013年10月25日,太空探险家协会(由各国航天员组成)在纽约召开记者招待会,呼吁国际社会合作,防范小行星撞击地球。 相似文献
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登上月球是人类航天史上的一个重要里程碑,而下一个重量级的里程碑,应该是载人探测火星。随着人类的目光再一次投向深空,载人探测火星也随之提上日程。美国虽然放弃了"星座"计划,但仍计划2030年代中期执行载人火星任务。下面介绍美国航宇局格伦研究中心"指南针"团队提出的使用太阳能电推进-化学推进系统的载人火星探测概念。火星之旅有多道难关1969年人类就完成了载人登月,而载人火星任务却还遥遥无期,这一方面是美苏航天竞赛退潮的因素,更主要的 相似文献
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China has carried out four unmanned missions to the Moon since it launched Chang'E-1, the first lunar orbiter in 2007. With the implementation of the Chang'E-5 mission this year, the three phases of the lunar exploration program, namely orbiting, landing and returning, have been completed. In the plan of follow-up unmanned lunar exploration missions, it is planned to establish an experimental lunar research station at the lunar south pole by 2030 through the implementation of several missions, laying a foundation for the establishment of practical lunar research station in the future. China successfully launched its first Mars probe on 23 July 2020, followed in future by an asteroid mission, second Mars mission, and a mission to explore Jupiter and its moons. 相似文献
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J.P. Sanchez C.R. McInnes 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2012
The asteroid and cometary impact hazard has long been recognised as an important issue requiring risk assessment and contingency planning. At the same time asteroids have also been acknowledged as possible sources of raw materials for future large-scale space engineering ventures. This paper explores possible synergies between these two apparently opposed views; planetary protection and space resource exploitation. In particular, the paper assumes a 5 tonne low-thrust spacecraft as a baseline for asteroid deflection and capture (or resource transport) missions. The system is assumed to land on the asteroid and provide a continuous thrust able to modify the orbit of the asteroid according to the mission objective. The paper analyses the capability of such a near-term system to provide both planetary protection and asteroid resources to Earth. Results show that a 5 tonne spacecraft could provide a high level of protection for modest impact hazards: airburst and local damage events (caused by 15–170 m diameter objects). At the same time, the same spacecraft could also be used to transport to bound Earth orbits significant quantities of material through judicious use of orbital dynamics and passively safe aero-capture manoeuvres or low energy ballistic capture. As will be shown, a 5 tonne low-thrust spacecraft could potentially transport between 12 and 350 times its own mass of asteroid resources by means of ballistic capture or aero-capture trajectories that pose very low dynamical pressures on the object. 相似文献
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M. Ya. Marov V. S. Avduevsky E. L. Akim T. M. Eneev R. S. Kremnev S. D. Kulikov K. M. Pichkhadze G. A. Popov G. N. Rogovsky 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2004,33(12):2276-2280
As an important milestone in the exploration of Mars and small bodies, a new generation space vehicle “Phobos-Grunt” is planned to be launched by the Russian Aviation and Space Agency. The project is optimized around a Phobos sample return mission and follow up missions targeted to study some main asteroid belt bodies, NEOs and short period comets. The principal constraint is use of the “Soyuz-Fregat” rather than the “Proton” launcher to accomplish these challenging goals. The vehicle design incorporates innovative SEP technology involving electrojet engines that allowed us to increase significantly the mission's energetic capabilities, as well as highly autonomous on-board systems. Basic criteria underlining the “Phobos-Grunt” mission scenario, scientific objectives and rationale including Mars observations during the vehicle's insertion into Mars orbit and Phobos approach maneuvers, are discussed and an opportunity for international cooperation is suggested. 相似文献
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J D Rummel 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2000,26(12):1893-1899
NASA is committed to exploring space while avoiding the biological contamination of other solar system bodies and protecting the Earth against potential harm from materials returned from space. NASA's planetary protection program evaluates missions (with external advice from the US National Research Council and others) and imposes particular constraints on individual missions to achieve these objectives. In 1997 the National Research Council's Space Studies Board published the report, Mars Sample Return: Issues and Recommendations, which reported advice to NASA on Mars sample return missions, complementing their 1992 report, The Biological Contamination of Mars Issues and Recommendations. Meanwhile, NASA has requested a new Space Studies Board study to address sample returns from bodies other than Mars. This study recognizes the variety of worlds that have been opened up to NASA and its partners by small, relatively inexpensive, missions of the Discovery class, as well as the reshaping of our ideas about life in the solar system that have been occasioned by the Galileo spacecraft's discovery that an ocean under the ice on Jupiter's moon Europa might, indeed, exist. This paper will report on NASA's planned implementation of planetary protection provisions based on these recent National Research Council recommendations, and will suggest measures for incorporation in the planetary protection policy of COSPAR. 相似文献
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Four future missions for deep space exploration and future space-based exoplanet surveys on habitable planets by 2030 are scheduled to be launched. Two Mars exploration missions are designed to investigate geological structure, the material on Martian surface, and retrieve returned samples. The asteroids and main belt comet exploration is expected to explore two objects within 10 years. The small-body mission will aim to land on the asteroid and get samples return to Earth. The basic physical characteristics of the two objects will be obtained through the mission. The exploration of Jupiter system will characterize the environment of Jupiter and the four largest Moons and understand the atmosphere of Jupiter. In addition, we further introduce two space-based exoplanet survey by 2030, Miyin Program and Closeby Habitable Exoplanet Survey (CHES Mission). Miyin program aims to detect habitable exoplanets using interferometry, while CHES mission expects to discover habitable exoplanets orbiting FGK stars within 10 pc through astrometry. The above-mentioned missions are positively to achieve breakthroughs in the field of planetary science. 相似文献
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萤火一号火星探测计划的科学目标 总被引:5,自引:0,他引:5
与其他行星相比火星是与地球最为相似, 也是最有可能在其上发现地球以外生命现象的一颗行星, 因此特别受到人类的关注. 近年来, 有国家已经发射了火星探测器, 并启动了载人火星探测研究计划. 中国是世界上第五个具备自主发射人造卫星的国家, 也是世界上第三个具备自主开展载人航天活动的国家. 但是中国在深空探测领域才刚刚起步. 2007年中俄两国签署了联合探测火星计划, 俄罗斯负责将中国研制的一颗微小卫星------萤火一号发送至火星轨道. 萤火一号将开展自主探测, 并与俄罗斯的火卫一探测器开展联合探测. 本文综述了萤火一号任务提出的科学背景及科学目标, 简要介绍了为实现科学目标配置的有效载荷, 以及入轨后的主要探测任务, 并对其科学探测结果进行了初步的展望. 相似文献
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P M Sterns L I Tennen 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1995,15(3):281-284
The planning and execution of manned and robotic missions to Mars present a wide range of jurisprudential issues. Provisions to prevent the disruption of natural celestial environments, as well as damage to the environment of Earth by the return of extraterrestrial materials, are important components of the law applicable to mankind's activities in outer space, and have been supplemented by scientifically instituted planetary protection policies. However, divergent legal regimes may exist, as the space treaties in force are neither uniform in their provisions, nor identical as to the states which have signed, ratified, or adopted the international agreements. The legal requirements applicable to a specific mission will vary depending on the entities conducting the program and specific mission profile. This article analyzes the divergent international legal regimes together with the factors which will influence the determination of the standards of conduct which will govern manned and robotic missions to Mars. 相似文献
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James D. Walker Christopher J. Freitas Mark B. Tapley 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2004,33(12):2270-2275
Due to the long lead time and great expense of traditional sample return mission plans to Mars or other astronomical bodies, there is a need for a new and innovative way to return materials, potentially at a lower cost. The Rapid Impactor Sample Return (RISR) mission is one such proposal. The general mission scenario involves a single pass of Mars, a Martian moon or an asteroid at high speeds (7 km/s), with the sample return vehicle skimming just 1 or 2 m above a high point (such as a top ridge on Olympus Mons on Mars) and releasing an impactor. The impactor strikes the ground, throwing up debris. The debris with roughly the same forward velocity will be captured by the sample return vehicle and returned to Earth. There is no delay or orbit in the vicinity of Mars or the asteroid: RISR is a one-pass mission. This paper discusses some of the details of the proposal. Calculations are presented that address the question of how much material can be recovered with this technique. There are concerns about the effect of Mars tenuous atmosphere. However, it will be noted that such issues do not occur for RISR style missions to Phobos, Deimos, or asteroids and Near Earth Objects (NEOs). Recent test results in the missile defense community (IFTs 6–8 in 2001, 2002) have scored direct hits at better than 1 m accuracy with closing velocities of 7.6 km/s, giving the belief that accuracy and sensing issues are developed to a point that the RISR mission scenario is feasible. 相似文献