Operating characteristics of the primary flow loop of a conceptual nuclear Brayton space powerplant
Steady state and transient operating characteristics of lithium cooled primary flow loop of nuclear Brayton space power plant
Kieffer, A. W.↗
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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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Preliminary results of testing a single tube potassium boiler for the advanced Rankine system
Performance and transient testing of single tube potassium boiler for Rankine nuclear power plant system
Bond, J. A.↗
Self-adjusting multisegment, deployable, natural circulation radiator Patent
Development and characteristics of natural circulation radiator for use with nuclear power plants installed in lunar space stations
Markley, R. A.↗
Gaseous fission closed loop MHD generator
Gaseous fission, closed loop, MHD generator in nuclear electric power plant
Sherman, A.↗
MHD power generation - State of the art and prospects for advanced nuclear applications
Magnetohydrodynamic generator development and applications in radiating power plants, propellant-cooled propulsion systems, and industry
Rosa, R. J.↗
A 120 kWe thermionic reactor ion propulsion spacecraft for the Comet Halley rendezvous mission
Externally fueled thermionic reactor power plant incorporation into unmanned ion propulsion spacecraft
Prickett, W. Z.↗
Hypersonic Research Facilities Study - Volume IV, Part 1: Phase III Final Studies Flight Research Facilities
The Phase III analyses of Flight Research Facilities performed as a portion of the Hypersonic Research Facilities (HYFAC) Study are presented herein. Two attractive flight research vehicle concepts, geared to the development needs of future (1980-2n00) operational hypersonic aircraft systems, are defined. The inherent research capability of each concept is further expanded by incorporating provisions within the basic vehicle design to accommodate the testing of several additional research options. The design feasibility of this approach to achieving increased research flexibility is examined. Near term propulsion systems are employed as the basic power plants to shorten acquisition time, reduce development costs, and provide high confidence in attaining the performance capability desired, Performance is determined for each basic vehicle and for the vehicles when incorporating several optional research packages. Total program cost estimates are developed for each vehicle and for the various research options. This study provides the necessary framework for the formulation of an attractive and needed flight research program which is a key element in the systematic development of an overall advanced research plan.
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Experimental study of flow distribution with circumferential manifolds
Water flow test results on fluid flow distribution and pressure loss in curved manifolds with tangential or radial entry are reported. Manifolds were studied both as inlet and outlet manifolds. Manifolds can be used for boilers and/or heat exchangers for advanced space electric power plants.
Dittrich, R. T.↗
Acoustically treated ground test nacelle for the General Electric TF34 turbofan
A description is given of the ground test quiet nacelle for the TF34 engine. The suppression treatment consists of cylindrical splitters in the inlet and fan exhaust ducts plus duct wall treatment and core exhaust wall treatment. Aerodynamic design analysis of the inlet and exhaust ducts and overall engine performance with pressure losses from the acoustic treatment is included. The objectives of the test program are to obtain noise data for a heavily suppressed high bypass turbofan with various arrangements of exhaust systems and acoustic treatment, and to provide a basis for the power plants of the Quiet Experimental STOL Aircraft (Questol).
Edkins, D. P.↗
Nuclear Electric Propulsion mission operations.
Mission operations are presented for comet rendezvous and outer planet exploration missions conducted by unmanned Nuclear Electric Propulsion (NEP) system employing in-core thermionic reactors for electric power generation. The selected reference mission are Comet Halley rendezvous and a Jupiter orbiter at 5.9 planet radii, the orbit of the moon Io. Mission operations and options are defined from spacecraft assembly through mission completion. Pre-launch operations and related GSE requirements are identified. Shuttle launch and subsequent injection to earth escape by the Centaur d-1T are discussed, as well as power plant startup and heliocentric mission phases.
Prickett, W. Z.↗
Aircraft noise sources - A review.
Attempt to identify the main sources of noise in various types of power plants, and to indicate trends in design and operations that are beneficial in noise control. Information is presented for such noise sources as jet exhausts, fans, high-lift devices, and unducted rotors. It is shown that lower noise levels are generally associated with lower airfoil velocities and lower pressure ratios.
Hubbard, H. H.↗
Mission operations for unmanned nuclear electric propulsion outer planet exploration with a thermionic reactor spacecraft.
Mission operations are presented for comet rendezvous and outer planet exploration NEP spacecraft employing in-core thermionic reactors for electric power generation. The selected reference missions are the Comet Halley rendezvous and a Jupiter orbiter at 5.9 planet radii, the orbit of the moon Io. The characteristics of the baseline multi-mission NEP spacecraft are presented and its performance in other outer planet missions, such as Saturn and Uranus orbiters and a Neptune flyby, are discussed. Candidate mission operations are defined from spacecraft assembly to mission completion. Pre-launch operations are identified. Shuttle launch and subsequent injection to earth escape by the Centaur D-1T are discussed, as well as power plant startup and the heliocentric mission phases. The sequence and type of operations are basically identical for all missions investigated.
Spera, R. J.↗
Progress in electrochemical storage for battery systems
Efforts to improve electrochemical systems for space use relate to: (1) improvement of conventional systems; (2) development of fuel cells to practical power systems; and (3) a search for new systems that provide gains in energy density but offer comparable life and performance as conventional systems. Improvements in sealed conventional systems resulted in the areas of materials, charge control methods, cell operations and battery control, and specific process controls required during cell manufacture. Fuel-cell systems have been developed for spacecraft but the use of these power plants is limited. For present and planned flights, nickel-cadmium, silver-zinc, and silver-cadmium systems will be used. Improvements in nickel-cadmium batteries have been applied in medical and commercial areas.
Ford, F. E.↗
Extraterrestrial imperative
The future benefits of extraterrestrial space to man and his problems, both personal and environmental, are discussed. Particular attention was given to space manufacturing, development of space power plants, mineral exploration, and transportation costs of such activities.
Ehricke, K. A.↗
Resource management implications of ERTS-1 data to Ohio
Initial experimental analysis of ERTS-1 imagery has demonstrated that remote sensing from space is a means of delineating and inventorying Ohio's strip-mined areas, detecting power plant smoke plumes, and proving the data necessary for periodically compiling land use maps for the entire state. The nature and extent of these problems throughout Ohio, how ERTS data can contribute to their solution, and estimates of the long term significance of these initial findings to overall resource management interests in Ohio are summarized.
Sweet, D. C.↗
Costs and Applications
Assuming an emissivity of 0.9, the total area required for SNPS radiators was calculated. An SNPS producing 13,000 MW of electrical power at an overall thermal efficiency of 56% would reject about 10,000 MW of heat. If the radiator has a length three times its width, then the width of the radiator base may be calculated as a function of radiator temperature. There are two such radiators used with the power plant. The base of a 750 K radiator for a 13,000 MWe SNPS would measure 200 meters, and its length would be 600 meters. At 1000 K, these dimensions are cut almost in half.
Williams, J. R.↗
Nuclear Science Symposium, 19th, and Nuclear Power Systems Symposium, 4th, Miami, Fla., December 6-8, 1972, Proceedings.
Major topics covered include radiation monitoring instrumentation, nuclear circuits and systems, biomedical applications of nuclear radiation in diagnosis and therapy, plasma research for fusion power, reactor control and instrumentation, nuclear power standards, and applications of digital computers in nuclear power plants. Systems and devices for space applications are described, including the Apollo alpha spectrometer, a position sensitive detection system for UV and X-ray photons, a 4500-volt electron multiplier bias supply for satellite use, spark chamber systems, proportional counters, and other devices. Individual items are announced in this issue.
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Investigation of a liquid-metal magnetohydrodynamic power system.
Liquid-metal magnetohydrodynamic power conversion is being investigated for nuclear-electric propulsion. A liquid-metal MHD converter has no moving mechanical parts and requires a heat source temperature of only 1300 K. Cycle efficiencies of 5% to 8% for single-stage converters and 10% for multistage converters appear attainable. The specific weight of a 240 kWe MHD power plant has been estimated as 30 kg/kWe with shielding for unmanned science missions.
Elliott, D. G.↗