97 citations · 651 across the 39 of their papers we have counts for
11 papers · 1 filter
Lunar Cold Trap Contamination by Landing Vehicles
Scott T. Shipley, John E. Lane, Philip T. Metzger
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 a…
Thermal Extraction of Volatiles from Lunar and Asteroid Regolith in Axisymmetric Crank-Nicholson Modeling
Philip T. Metzger, Kris Zacny, Phillip Morrison
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…
Modeling the Thermal Extraction of Water Ice from Regolith
Philip Metzger
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 impor…
Results of the 2015 Workshop on Asteroid Simulants
Philip T. Metzger, Daniel T. Britt, Stephen D. Covey +1
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 me…
Further Analysis on the Mystery of the Surveyor III Dust Deposits
John Lane, Steven Trigwell, Paul Hintze +1
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 eje…
Soil Test Apparatus for Lunar Surfaces
Laila A. Rahmatian, Philip T. Metzger
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 i…
Rocket Cratering in Simulated Lunar and Martian Environments
Christopher Immer, Philip Metzger
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 w…
The Physical State of Lunar Soil in the Permanently Shadowed Craters of the Moon
Jacob N. Gamsky, Philip T. Metzger
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 th…
Lagrangian Trajectory Modeling of Lunar Dust Particles
John E. Lane, Philip T. Metzger, Christopher D. Immer +1
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…
The Damage to Lunar Orbiting Spacecraft Caused by the Ejecta of Lunar Landers
Philip T. Metzger, James G. Mantovani
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…
Economics of In-Space Industry and Competitiveness of Lunar-Derived Rocket Propellant
Philip Metzger
Economic parameters are identified for an in-space industry where the capital is made on one planet, it is transported to and teleoperated on a second planet, and the product is tr…