Accession Number:

AD0767265

Title:

Off-Design Behavior for Axial Flow Compressor Stages with Invariable and Variable Geometry Blades,

Descriptive Note:

Corporate Author:

CINCINNATI UNIV OHIO DEPT OF AEROSPACE ENGINEERING

Personal Author(s):

Report Date:

1973-09-01

Pagination or Media Count:

67.0

Abstract:

An application of a computer program is described for studying the off-design performance for single and multistage axial flow compressors. The calculation method allows one to determine the stage characteristics as a function of revolutions. This can be accomplished in a very short time with only a few geometrical and aerodynamical input data. The flow is described by the well-known streamline curvature method. The necessity of a good loss model is shown. Limitations of this method are described. Some computation examples for the first and fifth stages of a ten-stage NASA axial flow compressor are presented. The stage and overall characteristics for different compressors are considered for invariable and variable blade geometry. The off-design analytical results are compared with existing experimental results. Author

Subject Categories:

  • Jet and Gas Turbine Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE