Technical Memorandum of National Aerospace Laboratory
巻
374
ページ
32
発行年
1978-11
抄録（英）
A monitoring of rotating stall and surging was carried out in order to protect a high-pressure multi-stage axial-flow compressor from destruction due to the unsteady flow phenomena,during the measurements over a wide range of its performance.The data,including that of the transition region into rotating stall and surging,obtrained from the flollowing measurements;fluctuating total and static pressures near the compressor casing wall with probe-microphones and pressure transducers of the strain-gauge type,rotor and stator blade vibration with strain gauges stuck on blades,and a sound pressure variation with a microphone in front of the compressor.Both rotating stall and surging could be detected easily from the measurements of the fluctuating total or static pressure near the compressor casing wall.The possibility of a prediction of resonant surging was given by the observation of a low frequency pulsating flow (about 1Hz) immediately before resonant surging.The number of stall cells and the propagating speed of a rotating stall in the various compressor conditions are measured.
高圧多段軸流圧縮機における旋回失速,サージングの一監視計測
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