Performance of Low-pressure-ratio Low-tip-speed Fan Stage with Blade Tip Solidity of 0.65
National Aeronautics and Space Administration, 1976 - Compressors - 94 pages
The overall and blade-element performance of a low pressure ratio, low tip speed fan stage is presented over the stable operating range at rotative speeds from 90 to 120 percent of design speed. Stage peak efficiency of 0.927 was obtained at a weight flow of 32.4 kg sec (190.31 kg sec sq m of annulus area) and a pressure ratio of 1.134. The stall margin at design speed and peak efficiency was 15.3 percent.
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100 Percent design 3DVj0nS 90 Percent ABS BETAM REL ABS MACH ABS VEL REL BETAM REL BETAM BETAM TOTAL TEMP blade span COEFF LOSS PARAM D-FACT EFF LOSS DEV D-FACT EFF deviation angles EFF LOSS COEFF HDVW INCIDENCE DEV D-FACT LOSS COEFF LOSS LOSS PARAM RP MACH NO MERID MACH NO REL MEAN SS TOT MERID MACH MERID PEAK SS MERID VEL TANG o0 id PARAM RP SPAN parameters PEAK SS RP Percent design speed PERCENT INCIDENCE DEV probe PROF TOT PROF RADII ABS BETAM RATIO IN RATIO reading number REL BETAM TOTAL REL MACH REL VEL MERID RISE EFFICIENCY rotative speed rotor blade RP SPAN MEAN SPAN MEAN SS SS TOT PROF static pressure stator suction surface TANG VEL WHEEL TEMP TOTAL PRESS tip and hub TOT PROF TOT TOTAL PRESS RP TOTAL PRESSURE RATIO TOTAL TEMP TOTAL TOTAL TEMPERATURE RATIO WHEEL SPEED RP WT FLOW