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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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Pneumatic controller regulates the load on a centrifugal freon compressor in a water cooling system, thus limiting the current input to an electric motor driving it. An electromechanical transducer monitoring the motor input current sends out air signals which indicate changes in the current to the pneumatic controller.
Water cooling system increases the life of the anode of a high temperature compact arc lamp. A shaped water passage is provided through the tip or hottest point of the anode so that water will flow through it at a relatively high velocity.
Radiator design evaluation of L/C coolant loop for SNAP-8 - digital computer evaluation
Steady flow ammonia MPD arc jet thrustor propulsion performance, discussing test chamber pressure variation, thrust data and cooling systems
Desorption cooling system performance using helium as working gas with various adsorbents
Regenerative cooling system for space shuttle engine
Regenerative cooling system for small rocket engine having restart capability and using noncryogenic hypergolic propellants
Coated screens withstand temperature cycling in special transpiration-cooling systems and provide porous surface that is effective at temperatures well above those limiting superalloy screen efficiency. Thickness of coating depends on time, temperature and activator concentration. Coatings are uniform and resistant to thermal cycling.
Effectiveness of turbine cooling systems for high temperature inlets
Regenerative cooling system for rocket combustion chamber using coolant tubes in convergent-divergent nozzle
Analysis of wall temperatures in rocket engine cooling system using D-shaped copper and stainless steel tubes for reduction of tube-wall crest temperatures
Performance tests and specifications for space storable regenerative cooling system with liquid oxygen and methane propellants
Regenerative cooling system design for rocket engines
Analyses of flow field downstream of jet directed at right angles into crossflow for heated and unheated single jets are presented. Application of flow data to cooling system for gas turbine combustion chambers is discussed. Temperature distribution, velocity trajectory, and vortex motion are described.
Solar powered heating and cooling system with possible application to residential homes is described. Operating principles of system are defined and illustration of typical energy storage and exchange system is provided.
An investigation of the heat tolerance in men unable to dispose of metabolic heat as fast as it is produced within the body is discussed. Examinations were made of (a) the effect of work rate (metabolic rate) on tolerance time when body heat storage rate is a fixed quantity, and (b) tolerance time as a function of metabolic rate when heat loss is terminated after a thermal quasi-equilibrium was attained under comfortable conditions of heat transfer. The nature of the physiological mechanisms involved in such heat stress situations, and the possibility of using prediction techniques to establish standard procedures in emergencies involving cooling system failures are also discussed.
A silicon monolithic multispectral photosensor device is described. Fabrication techniques and preliminary spectral response data are presented. The device is designed to meet small size and weight requirements and to impose a reduced load upon cooling systems in use on satellites.
The device was developed to supplement the existing cooling system of the Apollo 16 Lunar Surface Magnetometer (LSM). Analysis and tests showed that two such devices, inserted by an astronaut into receptacles on opposite sides of the electronics package, would reduce the diurnal temperature variation by about 40% and thereby would considerably increase the reliability of 50,000 welded connections. The LSM design constraints, selection of a variable conductance technique, heat pipe/radiator design features, and thermal performance are discussed.