Zobrazeno 1 - 10
of 30
pro vyhledávání: '"John Steven Snyder"'
Publikováno v:
Journal of Propulsion and Power. 36:668-676
The performance of many Hall thrusters has been shown to exhibit sensitivity to background pressure in ground-based test facilities, and this property can have an impact on the prediction of in-spa...
Publikováno v:
AIAA Propulsion and Energy 2021 Forum.
Publikováno v:
AIAA Propulsion and Energy 2021 Forum.
Autor:
Giovanni Lenguito, Ioannis G. Mikellides, Faraz Aghazadeh, Taylor Kerl, Dan M. Goebel, Richard R. Hofer, John Steven Snyder, Ian Johnson, Alejandro Lopez Ortega, Vernon H. Chaplin
Publikováno v:
AIAA Propulsion and Energy 2020 Forum.
Autor:
John Steven Snyder, James T. Singleton, Nathan S. Hicks, Kurt A. Polzin, Jason D. Frieman, Mitchell L. R. Walker, Jeff Baldwin
Publikováno v:
Journal of Propulsion and Power. 33:556-565
Accurate control and measurement of propellant flow to a thruster is one of the most basic and fundamental requirements for operation of electric propulsion systems, whether they be in the laboratory or on flight spacecraft. Hence, it is important fo
Publikováno v:
Plasma Sources Science and Technology. 29:035010
Autor:
Vernon H. Chaplin, John Steven Snyder, Giovanni Lenguito, Alejandro Lopez Ortega, Ioannis G. Mikellides
Publikováno v:
Plasma Sources Science and Technology. 29:035011
We employ the 2-D (r-z) code Hall2De to conduct numerical simulations of the SPT-140, a Hall thruster that operates with an external hollow cathode. The simulations are informed by direct measurements of the plasma conditions in the acceleration chan
Publikováno v:
2018 Joint Propulsion Conference.
Publikováno v:
Journal of Spacecraft and Rockets. 51:1822-1835
This paper offers a user-centric consolidation and comparison of the full range of government and commercial solar electric propulsion options available in the near term for primary propulsion on deep-space science missions of the class commonly prop
Publikováno v:
Journal of Spacecraft and Rockets. 51:360-373
Studies of high-power solar electric propulsion systems (i.e., tens to hundreds of kilowatts) suggest that significant mass savings may be realized by implementing direct-drive power systems. The National Direct-Drive Testbed was established to addre