Near Earth Asteroid Orbit Perturbation and Fragmentation

Near Earth Asteroid Orbit Perturbation and Fragmentation

Paperback (31 Dec 2018)

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Publisher's Synopsis

Collisions by near earth asteroids or the nuclei of comets pose varying levels of threat to man. A relatively small object, approximately 100 meter diameter, which might be found on an impact trajectory with a populated region of the Earth, could potentially be diverted from an Earth impacting trajectory by mass driver rocket systems. For larger bodies, such systems would appear to be beyond current technology. For any size object, nuclear explosions appear to be more efficient, using either the prompt blow-off from neutron radiation, the impulse from ejecta of near-surface explosion for deflection, or as a fragmenting charge. Practical deflections of bodies with diameters of 0.1, 1, and 10 km require interception, years to decades prior to earth encounter, with explosions a few kilotons, megatons, or gigatons, respectively, of equivalent TNT energy to achieve orbital velocity changes or destruction to a level where fragments are dispersed to harmless spatial densities. Ahrens, Thomas J. and Harris, Alan W. Jet Propulsion Laboratory NASA-CR-190116, NAS 1.26:190116 ...

Book information

ISBN: 9781792936777
Publisher: Amazon Digital Services LLC - KDP Print US
Imprint: Independently Published
Pub date:
Language: English
Number of pages: 38
Weight: 113g
Height: 279mm
Width: 216mm
Spine width: 2mm