Small Axial-Centrifugal Compressor Matching Study
Abstract
The prime objective of the program is to define the preliminary design and matching of an axial-centrifugal compressor for minimum engine specific fuel consumption at 60 percent power and 30 percent power, with secondary importance attached to SFC at 100 percent power. Analytical procedures were employed to investigate effects of engine cycle parameters, stage-matching characteristics of several axial and centrifugal compressors, variable compressor geometry (two-spools and stator variable setting angles), and power turbine variable area, upon minimum fuel consumption. Design studies were employed in the consideration of shafting and component arrangements. Comparative engine complexity of one-spool and two-spool compressors in front drive engines was evaluated in the selection of an optimum compressor configuration. The selected compressor preliminary design is based closely on stage pressure ratio levels that have been attained in previous developments; and requirements are an axial compressor with improved efficiency and demonstrated flow variability and a centrifugal compressor with modified configuration for close coupling behind axial stages. The selected compressor can be developed in a three-year program.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1970
- Accession Number
- AD0873844
Entities
People
- Laurence E. Brown