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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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Electronic circuit used relay coil to sense and control dc voltage. The control relay is driven by a switching transistor that is biased to cutoff for all input up to slightly less than the threshold level.
Coiled tungsten-filament quartz-iodine lamp for use as secondary standard in measurement of total radiant flux
High energy rate forming - investigation of high pressure waves, acoustic pressure pulse, pressure transducers, coil design, and storage system
Design of magnetic mirror machines for controlled fusion research apparatus, and optimization of magnetic field coils by adiabatic confinement of largest number of particles for given cost
Superconducting magnet with coils in variable- spacing horizontal-axis split pair configuration for plasma physics studies
Nb-Zr strip superconductor for stabilization of critical current anisotropy and coil degradation in magnets
Holding solenoid uses residual magnetism to hold its armature in a desired position after excitation current is removed from the coil. Although no electrical power or mechanical devices are used, the solenoid has a low tolerance to armature displacement from the equilibrium position.
In the magnetohydraulic metal forming system, a sonic shock wave is generated in a liquid medium by a coil energized by an electrical discharge. These waves transfer energy from a metal diaphragm, actuated by a pulsed magnetic field, to a metal workpiece. In the development a study was made of the pressure pulse phenomenon in a liquid medium.
System precisely controls the sinusoidal amplitude of a vibrating mechanical mass. Using two sets of coils, the system regulates the drive signal amplitude at the precise level to maintain the mechanical mass when it reaches the desired vibration amplitude.
Nondestructive electromagnetic method detects the extent of gold/nickel braze alloy flow in an engine injector sleeve-to-post joint. Voltage is induced in an inductor coil, along with a magnetically permeable material. The effects of altering the quantity of braze alloy present can then be measured.
Cold working and aging prepares nickel alloys for coiling into springs with properties acceptable in a cryogenic environment.
System locates the focal point of an extremely high intensity electron beam. The electron beam is swept and scanned cyclically with deflection coils under a focusing lens, causing the beam focal point to move so the locus of its positions is a spherical surface symmetrical to the beam axis.
Determination of maximum force on static sheet of aluminum subjected to magnetic field of hammer coil
Catalytic coil to oxidize carbon monoxide, hydrogen, and methane present as impurities in air
Superconducting coil performance and non-linear behavior of liquid helium bath with respect to heat flux
Communications satellite orientation with respect to earth, using structure mounted electromagnetic actuator coils
Dual-coil, superconducting, on-off switch measures small, thermoelectrically generated voltages produced by thermocouples in a liquid helium bath. Placed in a shunt configuration between the thermocouple and the measuring device, the measuring device sees the sum of the voltage to be measured and the spurious thermoelectric voltages.
Damping device limits spring surging in delicate instrumentation subjected to shock loading to tolerable limits. The device consists of a spiral formed plastic member interleaved between the spring coils in the same helix configuration.