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Use constant specific heats at room temperature. Round all answers to one decimal place. A simple Brayton cycle operates with air with minimum and maximum temperatures of 27 degree C and 727 degree C. It is designed so that the maximum cycle pressure is 2,000 kPa and the minimum cycle pressure is 100 kPa; the isentropic efficiency of the turbine is 86.4 percent. Determine the net work produced per unit mass of air each time this cycle is executed and the cycle's thermal efficiency.
What is the communication time if the local conditions limit spacecraft visibility to elevation angles larger than = 18 degrees?
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