Zobrazeno 1 - 10
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pro vyhledávání: '"Lane, John A."'
Tools have been developed to model and simulate the effects of lunar landing vehicles on the lunar environment, mostly addressing the effects of regolith erosion by rocket plumes and the fate of the ejected lunar soil particles. The KSC Granular Mech
Externí odkaz:
http://arxiv.org/abs/2306.04727
The Apollo 12 lunar module (LM) landing near the Surveyor III spacecraft at the end of 1969 has remained the primary experimental verification of the predicted physics of plume ejecta effects from a rocket engine interacting with the surface of the m
Externí odkaz:
http://arxiv.org/abs/2306.01087
A mathematical model and software implementation developed to predict trajectories of single lunar dust particles acted on by a high velocity gas flow is discussed. The model uses output from a computation fluid dynamics (CFD) or direct simulation Mo
Externí odkaz:
http://arxiv.org/abs/2305.19993
Autor:
Ramachandran, Mokhshan, Hamouda, Mohammed, Cui, Christina L., Moghaddam, Marjan, Zarrintan, Sina, Lane, John S., Malas, Mahmoud B.
Publikováno v:
In Journal of Vascular Surgery November 2024 80(5):1487-1497
Publikováno v:
In: 11th Biennial ASCE Aerospace Division International Conference on Engineering, Science, Construction, and Operations in Challenging Environments (Earth & Space 2008), March 3-5, 2008, Long Beach, California, United States
The Constellation Project's planned return to the moon requires numerous landings at the same site. Since the top few centimeters are loosely packed regolith, plume impingement from the Lander ejects the granular material at high velocities. Much wor
Externí odkaz:
http://arxiv.org/abs/2104.07669
Autor:
Metzger, Philip T., Lane, John E., Immer, Christopher D., Gamsky, Jacob N., Hauslein, Whitney, Li, Xiaoyi, Latta III, Robert C., Donahue, Carly M.
Publikováno v:
12th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments (Earth & Space 2010), March 14-17, 2010, Honolulu, Hawaii, United States
Small scale jet-induced erosion experiments are useful for identifying the scaling of erosion with respect to the various physical parameters (gravity, grain size, gas velocity, gas density, grain density, etc.), and because they provide a data set f
Externí odkaz:
http://arxiv.org/abs/2104.10038
Publikováno v:
12th Biennial International Conference on Engineering, Construction, and Operations in Challenging Environments (Earth & Spac3 2010), March 14-17, 2010, Honolulu, Hawaii, United States
Previously we presented a numerical model that predicts trajectories of lunar dust, soil, and gravel blown by the engine exhaust of a lunar lander. The model uses the gas density, velocity vector field, and temperature predicted by computational flui
Externí odkaz:
http://arxiv.org/abs/2104.06332
Publikováno v:
In: 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition. 05 January 2009 - 08 January 2009. Orlando, Florida
Experiments, analyses, and simulations have shown that the engine exhaust plume of a Mars lander large enough for human spaceflight will create a deep crater in the martian soil, blowing ejecta to approximately 1 km distance, damaging the bottom of t
Externí odkaz:
http://arxiv.org/abs/2104.06248
Publikováno v:
In: 11th ASCE Aerospace Division International Conference (Earth and Space 2008), Long Beach, CA, USA, March 3-6, 2008
Roberts' model of lunar soil erosion beneath a landing rocket has been updated in several ways to predict the effects of future lunar landings. The model predicts, among other things, the number of divots that would result on surrounding hardware due
Externí odkaz:
http://arxiv.org/abs/2104.05198
Autor:
Metzger, Philip T., Vu, Bruce T., Taylor, D. E., Kromann, M. J., Fuchs, M., Yutko, B., Dokos, Adam, Immer, Christopher D., Lane, John E., Dunkel, M. B., Donahue, Carly M., Latta III, Robert C.
Publikováno v:
In: 18th Engineering Mechanics Division Conference (EMD2007), Blacksburg, Virginia, USA, June 3-6, 2007
Several physical mechanisms are involved in excavating granular materials beneath a vertical jet of gas. These occur, for example, beneath the exhaust plume of a rocket landing on the soil of the Moon or Mars. A series of experiments and simulations
Externí odkaz:
http://arxiv.org/abs/2104.05195