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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Electron and ion density distributions in propagating current sheet in Z pinch discharge in argon obtained by microwave reflection interferometer
Current distribution to and electric field behavior of segmented electrodes in linear magnetogasdynamic generator
A basic reason for the complexity and sheer volume of electrode consolidation hardware in the MHD ETF Powertrain system is the channel electrode current distribution, which is non-uniform. If the channel design is altered to provide uniform electrode current distribution, the amount of hardware required decreases considerably, but at the possible expense of degraded channel performance. This paper explains the design impacts on the ETF electrode consolidation network associated with uniform channel electrode current distribution, and presents the alternate consolidation designs which occur. They are compared to the baseline (non-uniform current) design with respect to performance, and hardware requirements. A rational basis is presented for comparing the requirements for the different designs and the savings that result from uniform current distribution. Performance and cost impacts upon the combined cycle plant are discussed.
Current distribution on long dipole antenna using Wiener-Hopf equation
Langmuir measurements of rotating electric current distribution between electrodes of plasma engine
Current distribution on cylindrical dipole antenna in homogeneous warm plasma
Current distribution in thin film superconducting strip transmission line by Fredholm equation
Current distribution in thin film superconducting strip transmission line
The design impacts on the ETF electrode consolidation network associated with uniform channel electrode current distribution are examined and the alternate consolidation design which occur are presented compared to the baseline (non-uniform current) design with respect to performance, and hardware requirements. A rational basis is given for comparing the requirements for the different designs and the savings that result from uniform current distribution. Performance and cost impacts upon the combined cycle plant are discussed.
Axial current distribution in exhaust of magnetic annular arc, examining effect of entrainment on thrust measurement
Axial current distribution in exhaust of magnetic annular arc, examining effect of entrainment on thrust measurement
Nonuniform emitter current distribution effect on power transistor thermal stability, discussing temperature distribution effects
Integral equation describing current distribution in array of superconducting thin films
MGD generator and accelerator electrode drops and current distribution using hydrogen-helium test gas mixture
This paper presents a combined Monte Carlo and analytic approach to the calculation of the pixel-to-pixel distribution of proton-induced damage in a HgCdTe sensor array and compares the results to measured dark current distributions after damage by 63 MeV protons. The moments of the Coulombic, nuclear elastic and nuclear inelastic damage distribution were extracted from Monte Carlo simulations and combined to form a damage distribution using the analytic techniques first described in [I]. The calculations show that the high energy recoils from the nuclear inelastic reactions (calculated using the Monte Car10 code MCNPX [2]) produce a pronounced skewing of the damage energy distribution. The nuclear elastic component (also calculated using the MCNPX) has a negligible effect on the shape of the damage distribution. The Coulombic contribution was calculated using MRED [3,4], a Geant4 [4,5] application. The comparison with the dark current distribution strongly suggests that mechanisms which are not linearly correlated with nonionizing damage produced according to collision kinematics are responsible for the observed dark current increases. This has important implications for the process of predicting the on-orbit dark current response of the HgCdTe sensor array.
Current distribution along resistivity loaded V-antenna
Current distribution and input admittance of infinitely long cylindrical antenna driven by slice generator and immersed in anisotropic plasma
Current distribution and input impedance of infinite cylindrical antenna in anisotropic plasma, treating it as boundary value problem