Effect of Slotted Casing Treatment on Performance of a Multistage Compressor |
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100 percent corrected 16 18 Corrected 18 Corrected inlet Baseline compressor bleed doors circumferential distortion compressor discharge compressor face compressor maps compressor pressure ratio compressor stall compressor was mapped corrected airflow Corrected engine speed Corrected inlet airflow data Tip treatment distortion Baseline fig EFFECT OF SLOTTED effect of tip Efficiency ratio eighth stage exhaust nozzle Extrapolated stall points Figure four inlet conditions grooves hub radial distortion hub-radial distortion inlet airflow rate inlet configurations inlet distortion J85-13 compressor kg/sec Lewis Research Center located MULTISTAGE COMPRESSOR N/cm² normal operating range Overall compressor efficiency percent corrected engine percent of rated Performance maps performance with slotted performance with untreated probe Ptot pumping capacity rated 80 rings in stages SLOTTED CASING TREATMENT stage stator stall margin stall pressure ratio stall sites static pressure tip radial distortion tip-radial distortion tip-treatment treatment and distortion turbine-discharge temperature Type of data uniform inlet flow untreated rings wall treatment