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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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Digital computer programs determine steady-state performance characteristics of active and passive linear circuits. The ac analysis program solves the basic circuit parameters. The compiler program solves these circuit parameters and in addition provides a more versatile program by allowing the user to perform mathematical and logical operations.
Stable ac phase and amplitude comparator detects excessive vehicle maneuvering or vibration. It has phase demodulation, low-pass filter, and multiple threshold-setting capability designed specifically for low drifts over a wide range of temperatures.
Coast-phase propellant management system for two- burn Atlas-Centaur flight AC-8
Centaur AC-8 postflight guidance and control analysis
Postflight analysis of AC-8 Atlas Centaur vehicle with Surveyor payload model
Centaur AC-6 nose fairing separation tests
Flux jumps in hard superconductor AC and DC MAGNETIC fields
Semiconductor ac static power switch has long life and high reliability, contains no moving parts, and operates satisfactorily in severe environments, including high vibration and shock conditions. Due to their resistance to shock and vibration, static switches are used where accidental switching caused by mechanical vibration or shock cannot be tolerated.
Voltage and temperature values determined for polycarbonate capacitor 5000-hour ac life test
Electrical and mechanical design concepts, and performance specifications for expanded scale ac voltage monitor
HF pulse width modulation applied to DC to sinusoidal AC inverter to provide LF sine wave output without LF transformer or filter
LF surface plasmons in tunnel junctions coupling to AC Josephson current, discussing I-V characteristics
Flow graph techniques application to AC network worst case analysis, obtaining sensitivity function by splitting network elements into voltage and current generators
Report provides computer-calculated curves and tables for the daughter buildup of Ra-226, Ac-227 and U-232 chains. Data are presented as a function of time beginning with pure samples of each parent. The information may be of interest to those using decay chains as isotopic alpha sources or neutron sources.
Spectrographic method determines individual stainless steel components in molten bismuth-42 w/o tin eutectic to determine the solubility of Type 304 stainless steels. It utilizes the high sensitivity and precision of the spark-ignited, low-voltage ac-arc excitation of samples rendered homogeneous by dissolution.
Flight performance evaluation of Atlas Centaur launch vehicle AC-12 carrying Surveyor 3 lunar probe
AC electric and magnetic fields observed in ionosphere by Javelin sounding rocket
AC-16 guidance equations for OAO-A2 mission