Effect of Slotted Casing Treatment on Performance of a Multistage Compressor |
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100 percent corrected 16 18 Corrected 18 Corrected inlet Axial-Flow Compressor Baseline compressor bleed doors circumferential distortion 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 eighth stage exhaust nozzle Extrapolated stall points Figure four inlet conditions Grooved hub radial distortion hub-radial distortion inlet airflow rate inlet configurations inlet distortion J85-13 compressor kg/sec Lewis Research Center MULTISTAGE COMPRESSOR N/cm² N/VO NASA TM 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 total pressure treatment and distortion TREATMENT ON PERFORMANCE turbine-discharge temperature Turbojet Type of data uniform inlet flow untreated rings