Electronic ohmmeter provides direct digital output
Self-balancing wheatstone bridge acts as all-electronic digital readout ohmmeter.
Semyan, J.↗
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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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Inflatable bladder provides accurate calibration of pressure switch
Calibration of a pressure switch is accurately checked by a thin-walled circular bladder. It is placed in the pressure switch and applies force to the switch diaphragm when expanded by an external pressure source. The disturbance to the normal operation of the switch is minimal.
Smith, N. J.↗
Vacuum chamber provides improved insulation and support for cryostat
Taut wires in an evacuated cylinder minimize heat transfer through the walls and junctions of a liquid-helium-filled cryostat by suspending the cryostat.
Source record↗
Increasing resistance as a means of providing biological protection against various environmental factors during flight
Increasing resistance for protection against physiological hazards in flight
FLIGHT SAFETY↗
Faint radio signals provide firm lock on mariner mission
Mariner IV mission to Mars - tracking and experimentation
MARS PROBE↗
An electronic means of providing binaural indication of the direction of radio trans- missions
Radio transmission direction determination using electronic binaural hearing simulator and head movement
HEAD MOVEMENT↗
Copper foil provides uniform heat sink path
Thermal path prevents voids and discontinuities which make heat sinks in electronic equipment inefficient. The thermal path combines the high thermal conductivity of copper with the resiliency of silicone rubber.
Phillips, I. E., Jr.↗
Improved electrode paste provides reliable measurement of galvanic skin response
High-conductivity electrode paste is used in obtaining accurate skin resistance or skin potential measurements. The paste is isotonic to perspiration, is nonirritating and nonsensitizing, and has an extended shelf life.
Day, J. L.↗
Single connector provides safety fuses for multiple lines
Fuse-bearing sleeve which is inserted between the male and female members of a multiple-line connector contains a safety fuse for each pin of the connector assembly. The sleeve is easily and quickly opened for fuse replacement.
Weber, G. J.↗
Self-contained clothing system provides protection against hazardous environments
Self-contained clothing system protects personnel against hazardous environments. The clothing has an environmental control system and a complete protection envelope consisting of an outer garment, inner garment, underwear, boots, gloves, and helmet.
Source record↗
Body-fitted harness provides safe and easy component handling
Body-fitted restraint harness enables workers to safely and conveniently handle critical components during their installation or removal. Since the harness supports the components, the worker is able to maneuver through restricted areas with his hands free. It is easily put on, adjusted, and removed, or comfortably worn without interfering with normal activities.
Miller, E. G.↗
Low power heating element provides thermal control during swaging operations
Low power, cylindrical heating element in a swaging anvil assembly heats the material being worked on. The increased ductility of heated material results in crack-free deformation.
Crowell, J. W.↗
Freon provides heat transfer for solid C02 calibration standard
Acetone and Freon as liquid heat transfer mediums bring a dry ice bath to, and keep it at, the temperature required when using solid carbon dioxide as a calibration standard. Although acetone gives better results, Freon TF is preferred since acetone reacts violently in the presence of liquid oxygen.
Source record↗
Differential expansion provides pressure for diffusion bonding of large diameter rings
External pressure band is used to bond aluminum alloy collars to large diameter, stainless steel rings. The band contracts while cooling and exerts pressure on the joint between the silver plated surfaces of the ring and collar which expand toward the band. This diffusion bonding by differential expansion minimizes aluminum deformation.
Source record↗
O-rings with mylar back-up provide high- pressure cryogenic seal
Mylar lip type back-up ring installed in combination with three rubber O-rings seal the junctions between a tube stub and an adapter during high pressure gas flow at cryogenic to room temperatures. Mylar seals should not be used with oxygen under pressure or in the liquid state.
Funk, G. M.↗
Magnetic latches provide positive overpressure control
Louvers are used for overpressure safety venting in rooms or chambers where explosion hazards exist. The louvers have individually hinged closures that are held in locked position by commercially available magnets that quickly release them in an overpressure condition.
Loy, J. L.↗
Simple circuit provides reliable multiple signal average and reject capability
Summation average and reject circuit based on diode clamping allows detection of individual functional deviations in a multiple signal system without shutting down the entire system.
Openshaw, R. L.↗
Electrolytic etching process provides effective bonding surface on stainless steel
Electrolytic etching process prepares surfaces of a stainless steel shell for reliable, high strength adhesive bonding to dielectric materials. The process uses a 25 percent aqueous solution of phosphoric acid.
Source record↗