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pro vyhledávání: '"Metzger, Philip"'
Autor:
Metzger, Philip T.
Publikováno v:
Proceedings of 15th Biennial ASCE Conference on Engineering, Science, Construction, and Operations in Challenging Environments (Earth & Space 2016), pp. 58-66. Reston, VA: American Society of Civil Engineers, 2016
Experiments were performed to study how rocket exhaust blows soil in lunar and Martian conditions. Jets of gas were blown downwardly at various granular materials while a camera recorded the formation of scour holes as the material was removed. The e
Externí odkaz:
http://arxiv.org/abs/2406.15535
Autor:
Metzger, Philip
In the companion paper ("Erosion rate of lunar soil under a landing rocket, part 1: identifying the rate-limiting physics", this issue) an equation was developed for the rate that lunar soil erodes under the exhaust of a landing rocket. That equation
Externí odkaz:
http://arxiv.org/abs/2403.18584
Autor:
Metzger, Philip
Multiple nations are planning activity on the Moon's surface, and to deconflict lunar operations we must understand the sandblasting damage from rocket exhaust blowing soil. Prior research disagreed over the scaling of the erosion rate, which determi
Externí odkaz:
http://arxiv.org/abs/2403.18583
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
Publikováno v:
J. Aerospace Engineering 33, no.6 (Nov. 2020): 04020075
A physics-based computer model has been developed to support the development of volatile extraction from regolith of the Moon and asteroids. The model is based upon empirical data sets for extraterrestrial soils and simulants, including thermal condu
Externí odkaz:
http://arxiv.org/abs/2306.03776
Autor:
Metzger, Philip
Modeling has been developed to support the development of volatile extraction technologies for the Moon, Mars, asteroids, or other bodies. This type of modeling capability is important to avoid the high cost of multiple test campaigns in simulated lu
Externí odkaz:
http://arxiv.org/abs/2306.03164
The first asteroid simulants workshop was held in late 2015. These materials are needed for tests of technologies and mission operational concepts, for training astronauts , for medical studies, and a variety of other purposes. The new program is bas
Externí odkaz:
http://arxiv.org/abs/2306.03068
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
We have studied several field geotechnical test instruments for their applicability to lunar soil simulants and analog soils. Their performance was evaluated in a series of tests in lunar simulants JSC-1A, NU-LHT-2M, and CHENOBI each prepared in care
Externí odkaz:
http://arxiv.org/abs/2306.01080
Autor:
Immer, Christopher, Metzger, Philip
With NASA's planned return to the moon and possibly with lunar outposts being formed, repeated landings at the same site will be necessary. Understanding rocket plume interaction with lunar and Martian surfaces is of paramount importance in order to
Externí odkaz:
http://arxiv.org/abs/2306.01078