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Granular simulation of NEO anchoring

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dc.contributor.advisor Quadrelli, Marco en_US Mazhar, Hammad 2013-09-09T19:24:03Z 2013-09-09T19:24:03Z 2011-08
dc.identifier.citation JPL Summer Space Grant and Summer Internship Program (SIP), Pasadena, California, August 2011 en_US
dc.identifier.clearanceno 11-3888
dc.description.abstract NASA is interested in designing a spacecraft capable of visiting a Near Earth Object (NEO), performing experiments, and then returning safely. Certain periods of this mission will require the spacecraft to remain stationary relative to the NEO. Such situations require an anchoring mechanism that is compact, easy to deploy and upon mission completion, easily removed. The design philosophy used in the project relies on the simulation capability of a multibody dynamics physics engine. On Earth it is difficult to create low gravity conditions and testing in low gravity environments, whether artificial or in space is costly and therefore not feasible. Through simulation, gravity can be controlled with great accuracy, making it ideally suited to analyze the problem at hand. Using Chrono::Engine [1], a simulation package capable of utilizing massively parallel GPU hardware, several validation experiments will be performed. Once there is sufficient confidence, modeling of the NEO regolith interaction will begin after which the anchor tests will be performed and analyzed. The outcome of this task is a study with an analysis of several different anchor designs, along with a recommendation on which anchor is better suited to the task of anchoring. With the anchors tested against a range of parameters relating to soil, environment and anchor penetration angles/velocities on a NEO. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2011. en_US
dc.subject granular media en_US
dc.subject simulation en_US
dc.subject GPU hardware en_US
dc.subject multibody dynamics en_US
dc.subject collision detection en_US
dc.title Granular simulation of NEO anchoring en_US
dc.type Student Report en_US

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