Advanced solar Brayton space power systems

The closed-Brayton-cycle space power system has been selected to supply electric power for the NASA space station and military space applications. These systems are based on well-proven superalloy metal technology that limits the turbine inlet temperature to the range of 1033 to 1144 K (1400 to 1600 degrees F). Significant performance improvements can be attained by increasing the turbine inlet temperature to the range of 1367 to 1644 K (2000 to 2500 degrees F). Development in ceramic and composite materials for gas turbines show promise for increasing the temperature of the closed Brayton cycle system to this range. These technologies and the improvements in solar-powered closed Brayton cycle power system performance that can be gained are discussed.>