The turbine for a new jet engine was designed for entrance conditions of 160 psia and 1700F, ingesting 500 lbm/s at a speed of 500 rpm, and exit conditions of 80 psia and 1350F. If the altitude and...

The turbine for a new jet engine was designed

for entrance conditions of 160 psia and 1700F, ingesting

500 lbm/s at a speed of 500 rpm, and exit conditions of

80 psia and 1350F. If the altitude and fueling for the engine

were changed such that the entrance conditions were now

140 psia and 1600F, calculate the new operating speed,

mass flow rate, and exit conditions for similar operation, i.e.,

equal efficiency.