A method for measuring Reynolds number, viscosity, and atom concentration in hypervelocity nozzles.
Reynolds number, viscosity and atom concentration in hypervelocity nozzles measured using stagnation point heat transfer
Reddy, N.M.↗
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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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A comparison of two methods of measuring particle size of Al2O3 produced by a small rocket motor
The size of aluminum oxide particles produced by small rocket motors is determined by tank collection and spectrophotometry. The size of the particulate determines loss in thrust due to particle lag, particulate radiant heat transfer, acoustic attenuation and impingement and rocket plume structure and properties.
Dobbins, R. A.↗
A simple method for measuring the attenuation constant of waveguides
Silver conductive lacquers in microwave region
Klausmann, E.↗
Methods of measurement for semiconductor materials, process control, and devices Quarterly report, 1 Jan. - 31 Mar. 1969
Electrical resistivity, carrier lifetime, and electrical inhomogeneities in semiconductor devices
Bullis, W. M.↗
A comparison of two methods of measuring particle size of Al sub 2 O sub 3 produced by a small rocket motor.
Tank collection and spectrophotometric tests in determining aluminum oxide particle size produced by small rocket engine
Dobbins, R. A.↗
Non-contact method of measuring small eye- movements and stabilizing the retinal image.
Small eye movements measurement and retinal image stabilization based on tracking edge of blood vessel in optic disk
Cornsweet, T. N.↗
Experimental evaluation of the rate-of-rise method for measuring outgassing rates of three gases between 10 super minus super 6 and 10 super minus super 3 torr.
Leak rate measurement accuracy of rate-of-rise technique for nitrogen, methane and He between millionth and thousandth torr
Gregory, G. L.↗
Simplified method for measuring the impedance of RF power sources - A concept
Bolometer detector and bridge circuit measure the RF power. A varied bridge reference resistor achieves maximum power transfer allowing the output impedance of the RF source to be determined from the known circuit parameters.
Oakley, E. C.↗
A radiometric method for measuring the insertion loss of radome materials
Radiometer system measures effective noise temperature directed towards sky, with and without radome over antenna horn. Data is then translated into computer format. With additional transmission line insertion loss data from other measurements, computer calculates insertion loss of radome material.
Seidel, B. L.↗
Economic method for measuring ultra-low flow rates of fluids
Capillary tube flowmeter measures ultra-low flows of very corrosive fluids /such as chlorine trifluoride and liquid fluorine/ and other liquids with reasonable accuracy. Flowmeter utilizes differential pressure transducer and operates on the principle that for laminar flow in the tube, pressure drop is proportional to flow rate.
Bogdanovic, J. A.↗
A new method for measuring slipperiness of airport runways and other paved surfaces
Aircraft stopping distances on wet runways are accurately predicted by measurements taken with a conventional automobile equipped with diagonal braking system and simple instrumentation for recording stopping distances.
Horne, W. B.↗
Comparative evaluation of the thoracic impedance and isotope dilution methods for measuring cardiac output
Comparison of cardiac output values determined in humans by impedance and radioisotope flow measurements
Baker, L. E.↗
Comparative evaluation of the thoracic impedance and electromagnetic flow probe method for measuring cardiac output
Comparison of human cardiac output data obtained by thoracic impedance and blood flow measurements
Baker, L. E.↗
Analysis of a test method for measuring resonant frequencies of loaded hydraulic feed lines
Analysis of test facility for measuring resonant frequencies of fluid feed lines
Reis, G. C.↗
A comparison method to measure accelerometer transverse sensitivity
Piezoelectric accelerometer transverse sensitivity calibration using reference accelerometer comparison technique
Finley, T. D.↗
Development of a test method for measurement of damping characteristics of a lead and asbestos filled epoxy-polysulfide copolymer
Tuned resonant test for measuring damping characteristics of lead and asbestos filled epoxy- polysulfide copolymer
Howard, R. T.↗
A novel nondestructive, noncontacting method of measuring the depth of thin slits and cracks in metals
Nondestructive noncontacting microwave depth measurement of thin slits and cracks in metal surfaces
Feinstein, L.↗
A comparison of two methods of measuring particle size of Al2O3 produced by a small rocket motor
Tank collection and spectrophotometric tests in determining aluminum oxide particle size produced by small rocket engine
Dobbins, R. A.↗