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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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Effect of polymer injection on frictional drag in turbulent pipe flow
Frictional drag reducing polymer solution injection into boundary for turbulent pipe flow, discussing Reynolds number, injection rate, injection points and concentration
Unidirectional heat pipes to control TWT temperature in synchronous orbit
Unidirectional heat pipe system design to control temperature of high power traveling wave tubes in synchronous orbit communication satellite, dissipating waste heat
Heat-pipe-cooled thrust chambers for space storable propellants
Heat pipe cooled thrust chambers for space storable propellants, discussing design feasibility for radiation and regeneratively cooled concepts
Application of heat pipes to a nuclear aircraft propulsion system
Heat pipes in nuclear aircraft propulsion system, describing core, heat exchangers, and reactor to jet engine heat transport system
Theoretical analyses of cryogenic heat pipes
Working fluids liquid property variations effects on cryogenic heat pipe performance
Steady-state and transient performance of hot reservoir gas-controlled heat pipes
Liquid or vapor phase working fluids penetration effects on steady state and transient performance of hot reservoir gas controlled heat pipes
Compatibility evaluation of an ammonia- aluminum-stainless steel heat pipe
Accelerated failure tests of ammonia-Al-stainless steel heat pipes for fluid loss or energy transport degradation
Prediction and measurement of the vibrations induced in thin-walled pipes by the passage of internal turbulent water flow
Vibrational response of thin walled pipes to internal turbulent water flow as function of Strouhal number
Quasi-developed turbulent pipe flow with heat transfer
Downstream heat transfer and wall friction predictions for quasi-developed strongly heated turbulent pipe flow, using mixing length model
Weld beveling of large-diameter pipes
Technique employs electric drill and newly developed special jig to J-bevel, in the field, ends of pipes measuring between 15.24 cm and 45.72 cm in diameter in preparation for welding. Jig's construction and operation are described.
Multichamber controllable heat pipe
Valve throttles transfer of vapor between heat input surface and heat rejection surface of heat pipe to control rate of transfer of energy. Valve is operated by control signals which sense temperatures or pressures.
Technique for the direct measurement of thermal conductivity at high temperatures by the use of a heat pipe
Technique for direct measurement of thermal conductivity at high temperatures using heat pipes
Use of heat pipes for electrical isolation
Use of heat pipes for electrical isolation
A split-core heat-pipe reactor for space power applications
Split-core heat-pipe reactor for space power applications
Reexamination of heat pipe startup
Visual observation of high temperature profiles during startup in lithium heat pipe
Heat pipe thermionic diode power system Patent
Electric power system utilizing thermionic plasma diodes in parallel and heat pipes as cathodes
Experimental investigation of the performance of various wick configurations in single and two fluid heat pipes operating in the gravitational field
Performance of various wick configurations in single and two-fluid heat pipes operating as thermoregulatory system for space suits