干旱区生态环境知识资源中心(Arid): Survey of Technologies Relevant to Defense From Near-Earth Objects

Arid

报告编号	NASA/TP-2004-213089, M-1100
来源ID	NTRS_Document_ID: 20050081838
	Survey of Technologies Relevant to Defense From Near-Earth Objects
	Adams, R. B.; Alexander, R.; Bonometti, J.; Chapman, J.; Fincher, S.; Hopkins, R.; Kalkstein, M.; Polsgrove, T.; Statham, G.; White, S.
英文摘要	Several recent near-miss encounters with asteroids and comets have focused attention on the threat of a catastrophic impact with the Earth. This Technical Publication reviews the historical impact record and current understanding of the number and location of near-Earth objects (NEOs) to address their impact probability. Various ongoing projects intended to survey and catalog the NEO population are also reviewed. Details are given of a Marshall Space Flight Center-led study intended to develop and assess various candidate systems for protection of the Earth against NEOs. Details of analytical tools, trajectory tools, and a tool that was created to model both the undeflected inbound path of an NEO as well as the modified, postdeflection path are given. A representative selection of these possible options was modeled and evaluated. It is hoped that this study will raise the level of attention about this very real threat and also demonstrate that successful defense is both possible and practicable, provided appropriate steps are taken.
英文关键词	NEAR EARTH OBJECTS METEOROID HAZARDS TRAJECTORY ANALYSIS ASTEROIDS INTERCEPTION DEFLECTION FRAGMENTATION METEORITE COLLISIONS ASTEROID COLLISIONS TRAJECTORIES PROTECTION COUNTERMEASURES CIVIL DEFENSE SKY SURVEYS (ASTRONOMY) ASTRONOMICAL CATALOGS ELECTRIC COILS CHEMICAL EXPLOSIONS NUCLEAR EXPLOSIONS COMETS BLAST LOADS KINETIC ENERGY TUNGUSK METEORITE RISK PROBABILITY THEORY TSUNAMI WAVES SOLAR COLLECTORS SOLAR SAILS NUCLEAR ROCKET ENGINES
出版年	2004
报告类型	Technical Report
语种	英语
国家	美国
URL	http://hdl.handle.net/2060/20050081838
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/259311
推荐引用方式 GB/T 7714	Adams, R. B.,Alexander, R.,Bonometti, J.,et al. Survey of Technologies Relevant to Defense From Near-Earth Objects,2004.