Search Results - "PARKER, Jerald V"

Submicrosecond Pulsed Power Capacitors Based on Novel Ceramic Technologies by Domonkos, Matthew T, Heidger, Susan, Brown, Darwin, Parker, Jerald V, Gregg, Carl W, Slenes, Kirk, Hackenberger, Wes, Seongtae Kwon, Loree, Ellis, Tran, Tyrone

“…Capacitor energy density for submicrosecond discharge applications was investigated for capacitors based on the following: 1) polymer-ceramic nanocomposite…”
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Parallel Triggering and Conduction of Rail-Gap Switches in a High-Current Low-Inductance Crowbar Switch by Grabowski, Chris, Degnan, James H., Parker, Jerald V., Camacho, J. Frank, Coffey, Sean K., Delaney, Rachel K., Domonkos, Matthew T., Intrator, Thomas P., Lynn, Alan G., McCullough, John, Ruden, Edward L., Sommars, Wayne, Weber, Thomas E., Wurden, Glen A.

“…The field-reversed configuration heating experiment (FRCHX) was designed to form closed-field-line magnetized target plasmas for magnetoinertial fusion and…”
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Advancements in the Development of a Plasma-Driven Electromagnetic Launcher by Wetz, D.A., Stefani, F., Parker, J.V., McNab, I.R.

“…The Institute for Advanced Technology (IAT) is developing a plasma-driven railgun to launch low-mass projectiles of 5-10 g to a velocity in excess of 7 km/s…”
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Experiments to measure gouging threshold velocity for various metals against copper by Stefani, F., Parker, J.V.

“…Hypervelocity gouging is a form of damage that can occur to surfaces in sliding contact at high relative velocity. Gouges, which are in the form of…”
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Experimental observation of the rail resistance contribution to muzzle voltage [in railguns] by Parker, J.V.

“…In 1994, Dreizin and Barber presented an analysis of the muzzle voltage developed in a railgun with a solid contact armature. They showed that there is a…”
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Progress on developing the "magnetic obturator," a novel railgun armature by Stefani, F., Parker, J.V., Watt, T.

“…The "magnetic obturator" is an armature concept developed by IAP Research in the late 1980s. Advantages of the magnetic obturator include lower mass than…”
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Loss of propulsive force in railguns with laminated containment by Parker, J.V., Levinson, S.

“…The effect of a close-fitting laminated containment structure on propulsive L' is studied both experimentally and computationally. It is shown that the…”
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Demonstration of a hypervelocity mass-efficient integrated launch package by Zielinski, A.E., Parker, J.V.

“…Tests were conducted whereby a kinetic energy penetrator was launched from an electromagnetic launcher. The penetrator was fabricated from a tungsten alloy. An…”
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In-bore measurements using an optical data link [in EM railguns] by Schroder, K.A., Allen, R.J., Parker, J.V., Snowden, P.T.

“…Previous efforts to obtain information from onboard sensors involved writing the data to an EPROM located in the launch package, performing a "soft" catch of…”
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The atlas power-flow system - A status report by Davis, H. A., Ballard, E. O., Elizondo, J. M., Gribble, R. F., Nielsen, K. E., Parker, J. V., Parsons, W. M.

“…The design requirements, design features, test results and status of the Atlas high-energy pulsed-power facility power flow system are described…”
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Experimental Studies of an Ultrahigh-Speed Plasma Flow by Domonkos, Matthew T., Degnan, James H., Adamson, Paul E., Amdahl, David J., Blasy, Brian, Cooksey, Rufus, Grabowski, Theodore Chris, Lehr, Frederick Mark, Robinson, Paul Randy, Ruden, Edward L., White, William M., Frese, Michael H., Frese, Sherry D., Coffey, Sean K., Camacho, J. Frank, Makhin, Vladimir, Roderick, Norman, Parker, Jerald V., Lerma, Al, Gale, Donald, Kostora, Mark, McCullough, John, Ralph, Dale, Roth, Chris E., Sommars, Wayne E., Montoya, Thomas, Lynn, Alan G., Turchi, Peter J., Schroen, Diana

“…In 1991, Turchi et al. reported evidence for a 2000 km/s aluminum plasma that originated from the upstream boundary of a wire array armature in a plasma flow…”
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Submicrosecond Pulsed Power Capacitors Based on Novel Ceramic Technologies: SPECIAL ISSUE ON PULSED POWER SCIENCE AND TECHNOLOGY by DOMONKOS, Matthew T, HEIDGER, Susan, BROWN, Darwin, PARKER, Jerald V, GREGG, Carl W, SLENES, Kirk, HACKENBERGER, Wes, KWON, Seongtae, LOREE, Ellis, TRAN, Tyrone

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Experimental and Computational Progress on Liner Implosions for Compression of FRCs by Degnan, J.H., Amdahl, D.J., Brown, A., Cavazos, T., Coffey, S.K., Domonkos, M.T., Frese, M.H., Frese, S.D., Gale, D.G., Grabowski, T.C., Intrator, T.P., Kirkpatrick, R.C., Kiuttu, G.F., Lehr, F.M., Letterio, J.D., Parker, J.V., Peterkin, R.E., Roderick, N.F., Ruden, E.L., Siemon, R.E., Sommars, W., Tucker, W., Turchi, P.J., Wurden, G.A.

“…Magnetized target fusion (MTF) is a means to compress plasmas to fusion conditions that uses magnetic fields to greatly reduce electron thermal conduction,…”
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Experimental and Computational Progress on Liner Implosions for Compression of FRCs: Special issue on Megagauss Magnetic Fields: Production and Application by DEGNAN, James H, AMDAHL, David J, INTRATOR, Thomas P, KIRKPATRICK, Ronald C, KIUTTU, Gerald F, LEHR, Frederick M, LETTERIO, James D, PARKER, Jerald V, PETERKIN, Robert E, RODERICK, Norman F, RUDEN, Edward L, SIEMON, Richard E, BROWN, Aaron, SOMMARS, Wayne, TUCKER, Wesley, TURCHI, Peter J, WURDEN, Glen A, CAVAZOS, Thomas, COFFEY, Sean K, DOMONKOS, Matthew T, FRESE, Michael H, FRESE, Sherry D, GALE, Donald G, GRABOWSKI, Theodore C

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Why plasma armature railguns don't work (and what can be done about it) by Parker, J.V.

“…It is noted that conventional plasma armature railguns are limited to velocities of 6-8 km/s by arc restrike. The author argues that to realize the…”
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Performance loss due to electrical breakdown of pre-accelerator gas by Parker, J.V.

“…Railguns that do not ablate material into the bore may be subject to another force loss, electrical breakdown of the gas used to preaccelerate the projectile…”
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Electrical and thermal effects of rail cladding by Levinson, S., Parker, J.V., Kuo-Ta Hsieh, Bok-Ki Kim

“…Achieving long rail life may require the use of a thin surface cladding of hard, refractory material. This paper reports numerical simulations of the effect of…”
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An empirical model for plasma armature voltage (in EM launchers) by Parker, J.V.

“…Scaling of armature voltage with bore diameter is an important issue, since it affects the predicted efficiency and the predicted velocity performance of…”
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Muzzle shunt augmentation of conventional railguns by Parker, J.V.

“…Augmentation is a well-known technique for reducing the armature current, and hence the armature power dissipation, in a plasma armature railgun. In spite of…”
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Magnetic-probe diagnostics for railgun plasma armatures by Parker, J.V.

“…The author assesses the strengths and weaknesses of the various magnetic-probe techniques currently in use and provides recommendations for future improvements…”
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