Microwave power receiving antenna Patent
Microwave power receiving antenna solving heat dissipation problems by construction of elements as heat pipe devices
Dailey, C. C.↗
SEARCH · Engineering Papers
Results for “Heat Pipe”
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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The study and classification of two and multi-component high thermal conductance devices Interim report
Literature survey of heat pipe technology from 1964 to mid-1970
Barsch, W. O.↗
Research study on instrument unit thermal conditioning panel Final report
Design, fabrication, and performance test of heat pipe panel for Saturn 5 launch vehicle
Albright, C.↗
Design and development of a prototype static cryogenic heat transfer system
Design and development of prototype static cryogenic heat transfer system utilizing heat pipe with wetting arterial wick and nitrogen as working fluid
Source record↗
A design optimization of an out-of-core thermionic converter
Design optimization of out-of-core cylindrical thermionic converter module with heat pipes and integral finned radiator
Williams, R. M.↗
A 5 kW/e/ radioisotope thermionic power supply for unmanned electric propulsion
Radioisotope thermionic power supply for unmanned electric propulsion missions to outer planets, using 69 modules consisting of thermionic converter and emitter heat pipe
Gietzen, A. J.↗
Space Station design concepts
Manned space station optimal thermal control design, investigating heat pipe and semipassive/ air cooled concepts
Ferrara, A. A.↗
A design study of a 350 kWe out-of-core nuclear thermionic converter system
Out-of-core nuclear thermionic converter system design feature concerning heat pipes, vapor-cooled radiators, modularity and reliability
Breitwieser, R.↗
Thermal control systems design for space station
Space station thermal control systems design, discussing pumped loop, air cooled semipassive and heat pipe systems
Ferrara, A. A.↗
Design and analysis of a cascaded thermoelectric generator
Cascaded thermoelectric generator using Si-Ge and Pb-Te elements with heat pipe interstage coupling
Rouklove, P.↗
Hybrid thermocouple development program
The design and development of a hybrid thermocouple, having a segmented SiGe-PbTe n-leg encapsulated within a hollow cylindrical p-SiGe leg, is described. Hybrid couple efficiency is calculated to be 10% to 15% better than that of a all-SiGe couple. A preliminary design of a planar RTG, employing hybrid couples and a water heat pipe radiator, is described as an example of a possible system application. Hybrid couples, fabricated initially, were characterized by higher than predicted resistance and, in some cases, bond separations. Couples made later in the program, using improved fabrication techniques, exhibited normal resistances, both as-fabricated and after 700 hours of testing. Two flat-plate sections of the reference design thermoelectric converter were fabricated and delivered to NASA Lewis for testing and evaluation.
Garvey, L. P.↗
Thermochemistry of tantalum-wall cooling system with lithium and sodium working fluids
Plots are presented which show the distribution of oxygen between liquid lithium and tantalum or niobium, and between liquid sodium and tantalum at elevated temperatures. Additional plots showing the composition of the gas phase above the solutions of oxygen and alkali metal are presented. The use of the plots is illustrated by an example tantalum heat pipe filled with lithium.
Tower, L. K.↗
Evaluation of thermal network correction program using test temperature data
An evaluation process to determine the accuracy of a computer program for thermal network correction is discussed. The evaluation is required since factors such as inaccuracies of temperatures, insufficient number of temperature points over a specified time period, lack of one-to-one correlation between temperature sensor and nodal locations, and incomplete temperature measurements are not present in the computer-generated information. The mathematical models used in the evaluation are those that describe a physical system composed of both a conventional and a heat pipe platform. A description of the models used, the results of the evaluation of the thermal network correction, and input instructions for the thermal network correction program are presented.
Ishimoto, T.↗
Study of structural active cooling and heat sink systems for space shuttle
This technology investigation was conducted to evaluate the feasibility of a number of thermal protection systems (TPS) concepts which are alternate candidates to the space shuttle baseline TPS. Four independent tasks were performed. Task 1 consisted of an in-depth evaluation of active structural cooling of the space shuttle orbiter. In Task 2, heat sink concepts for the booster were studied to identify and postulate solutions for design problems unique to heat sink TPS. Task 3 consisted of a feasibility demonstration test of a phase change material (PCM) incorporated into a reusable surface insulation (RSI) thermal protection system for the shuttle orbiter. In Task 4 the feasibility of heat pipes for stagnation region cooling was studied for the booster and the orbiter. Designs were developed for the orbiter leading edge and used in trade studies of leading edge concepts. At the time this program was initiated, a 2-stage fully reusable shuttle system was envisioned; therefore, the majority of the tasks were focused on the fully reusable system environments. Subsequently, a number of alternate shuttle system approaches, with potential for reduced shuttle system development funding requirements, were proposed. Where practicable, appropriate shifts in emphasis and task scoping were made to reflect these changes.
Source record↗
An evolutionary approach for a compact-split-core reactor
An economical approach for advanced reactor power development is presented, and systems that result from the several stages of this plan are described. The development starts with a highly modularized heat pipe, radioisotopic design and evolves into a low specific weight high performance reactor system.
Breitwieser, R.↗
Thermal flux transfer system
A thermal flux transfer system for use in maintaining the thrust chamber of an operative reaction motor at given temperatures is described. The system is characterized by an hermetically sealed chamber surrounding a thrust chamber to be cooled, with a plurality of parallel, longitudinally spaced, disk-shaped wick members formed of a metallic mesh and employed in delivering a working fluid, in its liquid state, radially toward the thrust chamber and delivering the working fluid, in its vapor state, away from the nozzle for effecting a cooling of the nozzle, in accordance with known principles of an operating heat pipe.
Freggens, R. A.↗
An evolutionary approach for a compact-split-core reactor.
An economical approach for advanced reactor power development is presented, and systems that result from the several stages of this plan are described. The development starts with a highly modularized heat-pipe, radioisotopic design and evolves into a low-specific-weight, high-performance reactor system.
Breitwieser, R.↗
An insight into the features of the OAO-C thermal design.
The Orbiting Astronomical Observatory (OAO)-C was successfully launched into a 400-nautical mile circular orbit on Aug. 21, 1972. For this spacecraft, a unique sensitivity approach to the thermal design was developed which resulted in a predictable design - the merits of which should be considered for application on future spacecraft. The OAO-C is also serving as a test bed for the evaluation of thermal control hardware. To provide flight data for space program applications, experiments for a new coating and four different heat pipe designs are on this spacecraft. The data derived from OAO-C will be extremely valuable for such future programs as the Large Space Telescope (LST) and the Earth Observation Satellite (EOS).
Fine, H.↗