Accession Number : ADA049947


Title :   Compressor Stator Time-Variant Aerodynamic Response to Upstream Rotor Wakes.


Descriptive Note : Interim rept.,


Corporate Author : INDIANAPOLIS CENTER FOR ADVANCED RESEARCH IND


Personal Author(s) : Fleeter,Sanford ; Jay,Robert L ; Bennett,William A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a049947.pdf


Report Date : Nov 1976


Pagination or Media Count : 125


Abstract : An experimental investigation was conducted to determine the fluctuating pressure distribution on a stationary vane row, with the primary source of excitation being the wakes from the upstream rotor blades. This was accomplished in a large scale, low speed, single stage research compressor. The forcing function, the velocity defect created by the rotor wakes, was measured with a crossed hot-wire probe. The aerodynamic response on the vanes was measured by means of flush mounted high response dynamic pressure transducers. The dynamic data were analyzed to determine the chordwise distribution of the dynamic pressure coefficient and aerodynamic phase lag as referenced to a transverse gust at the vane leading edge.


Descriptors :   *AERODYNAMIC FORCES , *PRESSURE DISTRIBUTION , *TURBINE STATORS , VIBRATION , TIME SERIES ANALYSIS , RESEARCH FACILITIES , STATIONARY , WAKE , TEST FACILITIES , INSTABILITY , TURBOMACHINERY , ROTOR BLADES , COMPRESSOR STATORS , GUIDE VANES


Subject Categories : Fluid Mechanics
      Jet and Gas Turbine Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE