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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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Pivoted pad journal gas bearing performance from experimental study of Brayton cycle turbocompressor designed for space power system
Test performance of radial inflow turbine for Brayton cycle space power system
Design and performance of Brayton cycle compressor
Design point characteristics of 15-80 kWe nuclear reactor Brayton cycle power system
Cold performance tests and startup tests were conducted on the Brayton-cycle inverter, motor-driven pump, dc supply, speed control with parasitic load resistor and the Brayton control system. These tests were performed with the components in a vacuum and mounted on coldplates. A temperature range of ?25 to -50 C was used for the tests. No failures occurred, and component performance gave no indication that there would be any problem with the safe operation of the Brayton power generating system.
Conceptual designs for radioisotope heat source systems to provide 25 kW thermal power to Brayton cycle power conversion system for space applications
Rolling-element bearing lubrication system and turboalternator and turbine compressor rotor for Brayton cycle space power source
Equipment, procedures, and methods used in Brayton cycle demonstrator checkout tests
Performance of single stage, axial flow turbine designed for Brayton cycle space power system
Design and test performance of Brayton cycle turbine wheel and shaft mount
One megawatt reactor design for Brayton cycle space power application - neutronics design
Brayton cycle power generation using SNAP 8 nuclear reactor as energy source
Unbalanced electromagnetic forces in Brayton cycle turboalternator for space power system
Steady state and transient performance of Brayton cycle alternator and electronic controls for space power
NASA has been involved in the development of Closed Brayton Cycle (CBC) power conversion technology since the 1960's. CBC systems can be coupled to reactor, isotope, or solar heat sources and offer the potential for high efficiency, long life, and scalability to high power. In the 1960's and 1970's, NASA and industry developed the 10 kW Brayton Rotating Unit (BRU) and the 2 kW mini-BRU demonstrating technical feasibility and performance, In the 1980's, a 25 kW CBC Solar Dynamic (SD) power system option was developed for Space Station Freedom and the technology was demonstrated in the 1990's as part of the 2 kW SO Ground Test Demonstration (GTD). Since the early 2000's, NASA has been pursuing CBC technology for space reactor applications. Before it was cancelled, the Jupiter Icy Moons Orbiter (HMO) mission was considering a 100 kWclass CBC system coupled to a gas-cooled fission reactor. Currently, CBC technology is being explored for Fission Surface Power (FSP) systems to provide base power on the moon and Mars. These recent activities have resulted in several CBC-related technology development projects including a 50 kW Alternator Test Unit, a 20 kW Dual Brayton Test Loop, a 2 kW Direct Drive Gas Brayton Test Loop, and a 12 kW FSP Power Conversion Unit design.
Analog computer simulation of single shaft Brayton cycle system dynamics, including startup and shutdown transients
Alternator and voltage regulator for Brayton cycle space power system
Voltage transients due to phase angle switching of speed control power for Brayton cycle alternator examined by computerized simulation