BREAKUP OF LIQUID JETS BY TRANSVERSE SHOCKS
Multiple shock waves impinging on a single liquid jet and on two parallel jets in a direction perpendicular to their flow axes
SHOCK WAVE↗
SEARCH · Engineering Papers
Results for “IMPINGEMENT”
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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Improved technique for localizing electropolishing features novel nozzles
Impingement electropolishing is accomplished by use of an electrolyte film, which is evenly distributed by an insulated nozzle designed to match the contour of the workpiece to be treated. The workpiece is connected to the positive terminal of a generator and the nozzle to the negative terminal.
Source record↗
Microparticle impact sensor measures energy directly
Construction of a capacitor sensor consisting of a dielectric layer between two conductive surface layers and connected across a potential source through a sensing resistor permits measurement of energy of impinging particles without degradation of sensitivity. A measurable response is produced without penetration of the dielectric layer.
Alexander, W. M.↗
An experimental correlation of the nonreactive properties of injection schemes and combustion effects in a liquid-propellant rocket engine. part 1- the application of nonreactive-spray properties to rocket-motor injector design
Spray properties of unlike impinging streams of nonreacting fluids for design application to liquid propellant rocket engine injector
INJECTOR↗
Gas diffuser facilitates withdrawal of cryogenic liquids from tanks
Compact, cylindrical gas diffuser with radial exhaust slots and internal axial flow channels maintains the necessary pressure for the desired withdrawal rate of cryogenic liquids from tanks. The diffuser minimizes pressure loss which results from condensation of nitrogen gas in the liquid and prevents direct impingement of gas jets on liquid surface to reduce turbulence.
Dunn, J. D.↗
Predicting surface heating rates and pressures resulting from hot exhaust gases
Structural tests determine experimentally the amount of thermal protection required on the Apollo service module because of plume impingement heating. Exhaust flow field analysis correlates with flat plate heating rate and surface pressure in a vacuum.
Pieski, E. T.↗
Atmospheric effects on sonic-boom signatures
Atmospheric refraction, grazing incidence wave impingement, and turbulence interaction effects on sonic boom ground pressure signatures
TURBULENT MIXING↗
Chemical factors in N sub 2 O sub 4 - N sub 2 H sub 4 liquid reactions.
Immiscibility and rapid interface reaction rate as cause of disruption in nitrogen tetroxide- hydrazine impinging jets
LIQUID PROPELLANT↗
Experiments shed new light on nickel-fluorine reactions
Isotopic tracer experiments and scale-impingement experiments show fluorine to be the migrating species through the nickel fluoride scale formed during the fluorination of nickel. This is in contrast to nickel oxide scales, where nickel is the migrating species.
Fischer, J.↗
Electric drag on satellites - Theory and experiment.
Electric drag of satellites noting contribution of impinging ions
ELECTROMAGNETIC FIELD↗
Interaction of a plasma flow with a three dimensional magnetic dipole.
Chapman-Ferraro problem analyzed by impinging high speed hydrogen plasma stream against three- dimensional magnetic dipole, discussing boundary shape
PLASMA-ELECTROMAGNETIC INTERACTION↗
Heterogeneous Nucleation of Bi and Ag on Amorphous Substrates (In Situ Electron Microscopy Studies)
Bi and Ag nucleation on evaporated substrates studied as function of substrate temperature and impinging flux using electron microscopy
ELECTRON MICROSCOPY↗
LOX-container-rupture fire hazards Final report, Aug. 29 - Oct. 16, 1967
Liquid oxygen container rupture fire hazards - impingement effects of compressed oxygen gas and cryogenic supercritical oxygen against Mylar superinsulation in air
Weatherford, W. D., Jr.↗
Rocket exhaust-plume problems and some recent related research
Rocket exhaust research in areas of direct impingement heating, backwash base heating, radio signal attenuation, and interference with line of sight to ground stations
Andrews, E. H., Jr.↗
Excitation cross section for some of the doubly ionized states of argon, neon, and krypton by fast electrons.
Excitation cross section for double ionized states of Ar, Ne and Kr due to fast electron impingement on neutral atom
Koozekanani, S. H.↗
Space-saving hoist for tank manholes
Working platform and collapsible basket facilitate entry of men with equipment into the overhead manhole of a deep tank. A winch and pulley rigging hold the basket which is suspended in the manhole. The basket is suspended at three points without the rig impinging on the area of the manhole.
Ehrhardt, W. R., Jr.↗
Single-element coaxial injector for rocket fuel
Improved injector for oxygen difluoride and diborane has better mixing characteristics and is able to project fuel onto the wall of the combustion chamber for better cooling. It produces an essentially conical, diverging, continuous sheet of propellant mixture formed by similarly shaped and continuously impinging sheets of fuel and oxidant.
Larson, L. L.↗
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.↗