Zobrazeno 1 - 10
of 105
pro vyhledávání: '"Metzger, Philip T."'
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
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
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
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:
Gamsky, Jacob N., Metzger, Philip T.
The physical state of the lunar soil in the permanently shadowed craters of the moon is inferred from experimental investigation. The permanently shadowed craters do not undergo the same thermal cycling experienced by other parts of the moon and ther
Externí odkaz:
http://arxiv.org/abs/2305.20007
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
Publikováno v:
In Earth and Space 2021, pp. 136-145. 2021
This manuscript analyzes lunar lander soil erosion models and trajectory models to calculate how much damage will occur to spacecraft orbiting in the vicinity of the Moon. The soil erosion models have considerable uncertainty due to gaps in our under
Externí odkaz:
http://arxiv.org/abs/2305.12234
Autor:
Metzger, Philip T., Autry, Greg W.
This study estimates the cost of building lunar landing pads and examines whether any construction methods are economically superior to others. Some proposed methods require large amounts of mass transported from the Earth, others require high energy
Externí odkaz:
http://arxiv.org/abs/2205.00378
Autor:
Metzger, Philip T.
Publikováno v:
In Icarus 15 July 2024 417