Book Description
Results are presented of efficiency tests on a single-stage impulse turbine having an 11.0-inch pitch-line diameter wheel and a fabricated nozzle diaphragm using air at moderate temperatures as the driving fluid. Efficiency curves are shown for turbine pressure ratios from 1.2 to 5.2. The maximum efficiency occurred at a blade-to-jet speed ratio of approximately 0.4 and was about 0.615 for turbine pressure ratios from 3.0 to 4.6. Additional curves of the air-flow data are presented.