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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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Using a device that is not limited to a minimum thickness or width-to-thickness ratio, a very thin metal tape or ribbon is formed into a continuous flat wound helical coil. The device imparts the desired circular shape by squeeze rolling it with an unequal force across its width.
Radiation fields produced by energetic electrons in helical orbit within magnetoactive plasma derived by solving Maxwell equations
Pump and seal parameters for helical groove, hermetically sealed pump and bearing rotor
Cavitation performance of 84 deg helical pump inducer operated in 37 deg and 42 deg R liquid hydrogen
Net positive suction head requirements for helical inducer in liquid hydrogen under varied flow and temperature conditions
FASTER computer program modified for tracking neutrons through reactor slabs penetrated by helical voided ducts
Turbulent boundary layer characteristics on rotating helical blade of small aspect ratio
Radiation fields from energetic electron moving in helical orbit in magnetoactive plasma, using Maxwell equations
Semi-rigid coaxial cable forms the helical element of antennas. Antennas are inexpensive, corrosion resistant, require minimum maintenance, and can be easily transported and assembled.
Hydrogen cavitation performance of helical inducer mounted in line with stationary centerbody at various temperatures
Effect of helical flow inserts on boiling pressure drop
Enhanced heat transfer in tubes by using helical vane inserts
Effect of blade leading edge thickness on cavitation performance of helical inducer in hydrogen
Cavitating and noncavitating performance of helical inducer with blunt blade leading edges in liquid hydrogen
Fast neutron transport characteristics of helical ducts using Monte Carlo code FASTER, computing neutron fluxes and attenuation
Helical twisting power of steroidal solutes in cholesteric mesophases, discussing nematic temperature shift dependence on ester chain
Swirling flow between concentric cylinders, studying helical instability modes