Interception of comets and asteroids on collision course with earth
I derive expressions for the weight and range of applicability of interceptors capable of deflecting a comet or asteroid on collision course with Earth. The expressions use a fairly general relationship between the energy deposited and the mass of material blown off the astral assailant. To assess the probability that the astral assailant will fracture, I also calculate the fraction of the astral assailant's mass that will be blown off. The interaction is calculated for both kinetic-energy deflection and nuclear-explosive deflection. In the nuclear-explosive case, I calculate the interceptor mass and cratering effect for detonations above the surface and below the surface as well as directly on the surface of the astral assailant. Because the wide range of densities and material properties that the astral assailant may possess, the principal value of this work is to show the relationships among the salient parameters of the problem.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5693171
- Report Number(s):
- LA-UR-92-231; CONF-920180--1; ON: DE92007431
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
450200 -- Military Technology
Weaponry
& National Defense-- Nuclear Explosions & Explosives
661300* -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTEROIDS
COLLISIONS
COMETS
EARTH PLANET
EQUATIONS
EXPLOSIONS
INTERCEPTION
NUCLEAR EXPLOSIONS
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450200 -- Military Technology
Weaponry
& National Defense-- Nuclear Explosions & Explosives
661300* -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ASTEROIDS
COLLISIONS
COMETS
EARTH PLANET
EQUATIONS
EXPLOSIONS
INTERCEPTION
NUCLEAR EXPLOSIONS
PLANETS