Chapter
Apr 26, 2012
Functional Scaling for the Cratering of a Granular Surface by an Impinging Jet
Authors: C. M. Donahue [email protected], P. T. Metzger [email protected], and C. D. Immer [email protected]Author Affiliations
Publication: Earth & Space 2006: Engineering, Construction, and Operations in Challenging Environment
Abstract
When launching or landing a spacecraft on the regolith of a planetary surface, special attention needs to be paid to the rocket exhaust cratering effects. If the effects are not controlled, the rocket cratering could damage the spacecraft or other surrounding hardware. The cratering effects of a rocket landing on a planet's surface are not understood well, especially for the lunar case with the plume expanding in vacuum. As a result, the blast effects cannot be estimated sufficiently using analytical theories. It is necessary to develop physics-based simulation tools in order to calculate mission-essential parameters. In this work we test out the scaling laws of the physics in regard to growth rate of the crater depth. This will provide the physical insight necessary to begin the physics-based modeling.
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© 2006 American Society of Civil Engineers.
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Published online: Apr 26, 2012
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Department of Physics, Astronomy and Geology, Berry College, 2277 Martha Berry Hwy. NW, Mount Berry, GA 30149. E-mail: [email protected]
The KSC Applied Physics Laboratory, John F. Kennedy Space Center, NASA YA-C3-E, Kennedy Space Center, Florida 32899. E-mail: [email protected]
ASRC Aerospace, EDL Rm. 170h M/S ASRC-10, Kennedy Space Center, Florida 32899. E-mail: [email protected]
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