SEARCH · Search NASA
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Refractory metal foil sprayed with ceramic coating serves as evaporating boat for inorganic materials. The high thermal conductivity of this boat makes it useful with ohmic heaters.
Thermal radiation shield contains escaping heat from an induction furnace. The shield consists of a sheet of refractory metal foil and a loosely packed mat of refractory metal fibers in a concentric pattern. This shielding technique can be used for high temperature ovens, high temperature fluid lines, and chemical reaction vessels.
Shielding a test chamber for magnetic components enables it to maintain a constant, low magnetic field. The chamber is shielded from ambient magnetic fields by a lead foil cylinder maintained in a superconducting state by liquid helium.
Strain measurements on nickel alloy foil by X-ray diffraction, electron microscopy, and annealing effect on agglomeration
As thrust levels increase and as rocket engines fire for longer periods of time, the difficulties encountered in the protection of critical components from the effects of excessively high temperatures greatly increase. To protect these components a series of filled elastomeric composites have been evaluated. A brief discussion is presented of the problems of hot gas recirculation, radiation, and base plane heating with particular reference to large, clustered, liquid propellant rocket engines. The effect on components is discussed and an evaluation of a series of insulators based on filled elastomeric composites is presented. The evaluations are based on specialized thermal tests which were designed to simulate as far as possible, conditions during flight. The most promising of these elastomeric composites are compared to three alternative insulative systems, a filled, castable ceramic, a metal foil-silica fiber batting, and an asbestos-inconel wire mesh composite, in terms of weight, cost, and ease of fabrication and repair.
Coulomb scattering cross section for electrons without atomic excitation and energy of 1 mev incident on thin aluminum foil
Micrometeoroid detector-analyzer with ballistic pendulum for momentum measurement and capacitive foils for velocity
Strain gage installation covered with a three-layer coating of commercial materials makes measurements in water and liquid hydrogen. It consists of a selected foil strain gage bonded with a modified commercial heat-curring epoxy cement. The outer protective layer of the gage installation may develop cracks when immersed in liquid hydrogen.
Capacitor of extended foil construction performs as a distributed parameter pulse line in which current, amplitude, and period are readily controlled. The capacitor is used as the energy storage element in a pulsed plasma accelerator.
Uniform sized, laminated panels protect delicate parts and equipment from damage during storage and transportation. The panels consist of sheets of steel foil bonded between sheets of elastic foam. They are lightweight, impact and puncture-resistant, and, when formed into an enclosure, provide a barrier against moisture and thermal shock.
Large area, nonelectrolytic tantalum foil capacitor has capacitance of approximately 1 microfarad and is capable of operating at 125 deg C at 150 volts with an insulation resistance of at least 1 megohm. In tests at a potential of 100 volts, capacitors remained stable through a temperature range from 25 deg to 125 deg C.
Photoconductive cell configurations using cadmium sulfide film deposited on glass and metal foil
Cost comparison of perlite and multilayer aluminum foil relective insulation in liquid hydrogen storage dewars for M-1 engine
Metallic magnetic alloy foil preparation for development of non-destructive readout buffer memory planes using laminated layer technique
Life testing and reliability engineering of film-foil polycarbonate capacitors for static convertors and inverters
Growth and evaluation of gallium arsenide-indium arsenide-aluminum foil structures in construction of thin film large area solar cells for satellites
Measurement of equilibrium fractions of helium ions present in helium beams scattered at zero degrees through carbon foils
Interference of fine-structure levels in hydrogen ions passing through two successive carbon foils