Zobrazeno 1 - 10
of 24
pro vyhledávání: '"D. H. Barnett"'
Autor:
W. A. Harrison, James C. Dickens, Andreas A. Neuber, John J. Mankowski, D. H. Barnett, David Hattz, William Brooks
Publikováno v:
IEEE Transactions on Plasma Science. 48:2163-2174
A 3-D Monte Carlo-type random walk model was constructed for the assessment of lightning attachment probabilities to small structures. The simulation assumed buildings had a negligible impact on the propagation of lightning. A purely stochastic propa
Publikováno v:
IEEE Transactions on Plasma Science. 47:1472-1476
This paper focuses the tunability of a reflex triode virtual cathode oscillator (vircator). The vircator cathode is a bimodal carbon fiber (CF) material, while the anode is polished pyrolytic graphite. These materials have ideal operating characteris
Publikováno v:
Propellants, Explosives, Pyrotechnics. 43:779-788
Autor:
James C. Dickens, Andreas A. Neuber, John J. Mankowski, Ravindra P. Joshi, D. H. Barnett, M. Abide, T. Buntin
Publikováno v:
2019 IEEE Pulsed Power & Plasma Science (PPPS).
The development of a low-impedance magnetically insulated transmission line oscillator (MILO) driven by a compact Marx generator developed by Texas Tech University is discussed. The goals of the project aim to develop a MILO operating within the S-Ba
Autor:
Andreas A. Neuber, D. H. Barnett, Ravindra P. Joshi, James C. Dickens, John J. Mankowski, M. Abide, T. Buntin
Publikováno v:
2019 IEEE Pulsed Power & Plasma Science (PPPS).
A low-impedance MILO is being developed at Texas Tech University, and a compact Marx generator was designed to drive it. The target design goals of the Marx are an output voltage greater than 500 kV and an output current greater than 40 kA. Risetime
Autor:
Andreas A. Neuber, W. A. Harrison, James C. Dickens, D. Hattz, J. J. Mankowsi, D. H. Barnett, W. Brooks
Publikováno v:
2019 IEEE Pulsed Power & Plasma Science (PPPS).
A stochastic model of downward lightning propagation and attachment was developed based on existing models of the propagation of a negative leader as a gas diffusion problem. Attachment was modelled using the rolling sphere concept. The resulting sim
Autor:
James C. Dickens, H. Hudyncia, John J. Mankowski, T. Buntin, R. Clark, A. T. Hewitt, D. H. Barnett, W. A. Harrison, R. J. Lee, Andreas A. Neuber, E. Tucker
Publikováno v:
2019 IEEE Pulsed Power & Plasma Science (PPPS).
The impact of mechanical stresses on polymer bonded high explosives, HE, is investigated. High-Speed photography in the visible spectrum, VIS, as well as mid-wave infrared (MWIR) of HE during small diameter drilling and controlled skidding is present
Autor:
D. H. Barnett, A. T. Hewitt, E. Tucker, Andreas A. Neuber, W. A. Harrison, T. Buntin, John J. Mankowski, James C. Dickens, R. J. Lee, R. Clark
Publikováno v:
2019 IEEE Pulsed Power & Plasma Science (PPPS).
The drilling behavior of polymer bonded high explosives (HE) is investigated by varying drilling parameters and analyzing resultant forces and thermal response. A modified drill press enables remote operation and precise control of cutting speed, fee
Publikováno v:
2018 IEEE International Power Modulator and High Voltage Conference (IPMHVC).
This study serves to describe three-dimensional particle-in-cell (PIC) simulations of a tunable reflex-triode virtual cathode oscillator (vircator). Experimental data from the compact hard-tube reflex-triode vircator developed at Texas Tech Universit
Publikováno v:
2017 IEEE 21st International Conference on Pulsed Power (PPC).
This study focuses on achieving wide tunability of a compact reflex triode virtual cathode oscillator (vircator). The cathode is of a bimodal carbon fiber (CF) material paired with a pyrolytic graphite anode. These materials display ideal operating c