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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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Center-tap push-pull transformer with toroidal core helically wound with a single coaxial cable creates a high frequency wideband transformer. This transformer has a high-turn ratio, a high coupling coefficient, and a flat broadband response.
Contaminant valve with a coaxial groove rotor uniformly deposits contaminant into a flow stream under full pressure and flow conditions. The valve tests filters and filter elements of hydraulic oil, fuel, or lubricant systems without any detrimental effect on the performance.
Process reduces secondary electron emission in coaxial connector and in waveguides in the atmosphere. The assembly is placed in a vacuum chamber and is gradually vented to the atmosphere. It is exposed to high voltage, argon gas, and a hydrocarbon gas during the process.
Low-input voltage converter/regulator constructed in a coaxial configuration minimizes external magnetic field disturbance, suppresses radio noise interference, and provides excellent heat transfer from power transistors. It converts the output of fuel and solar cells, thermionic diodes, thermoelectric generators, and electrochemical batteries to a 28 V dc output.
Monte Carlo computer program for transmission probability for gas molecular flow through two coaxial cylinders in series
Modified P function applied to turbulent mixing of three coaxial, axisymmetric jets of reactive gases
Performance tests of low pressure drop coaxial and shower-head injectors for gaseous hydrogen- liquid fluorine rocket chamber
Impedance computations for parallel plate and coaxial cylinder plasma capacitors in magnetic field
Glass tube containing pressurized helium progressively imploded by coaxial explosive charge, considering application to hypervelocity guns
Precision DC potentiometer microwave test set for coaxial or waveguide insertion loss measurement
Laminar argon arcjet mixing with coaxial flow of cool helium, considering turbulent characteristics and heat transfer
Dynamic behavior of soap film stretched between two coaxial rings, assuming potential energy of this surface to be proportional to surface area
Precision DC potentiometer test for measuring microwave coaxial or waveguide insertion loss
Cylindrical sample container provides a high degree of nuclear stabilization to a nuclear magnetic resonance /nmr/ spectrometer. It is placed coaxially about the nmr insert and contains reference sample that gives a signal suitable for locking the field and frequency of an nmr spectrometer with a simple audio modulation system.
Amplifier translates the square pulses generated by a boron-trifluoride neutron sensitive detector located adjacent to a nuclear reactor to slower, long exponential decay pulses. These pulses are transmitted over long coaxial cables with minimum distortion and loss of frequency.
Miniature solenoid valve controls propellant flow during tests on a coaxial plasma accelerator. It uses an advanced ferromagnetic core design which meets all the rapid-acting requirements with a minimum of input energy.
Quarter-wavelength chokes are mounted on the coaxial line of an antenna structure to prevent induced spurious currents from affecting the antenna radiation frequency pattern. The choke-absorbent combination approximately doubled the usable frequency range for the antenna system studied.
Admittance of wedge excited coaxial antenna with plasma sheath