Accession Number : ADP006204

Title :   Design and Aerodynamic Performance of a Small Mixed-Flow Gas Generator Turbine,

Corporate Author : PRATT AND WHITNEY CANADA INC LONGUEUIL (QUEBEC)

Personal Author(s) : Okapuu, U.

Report Date : SEP 1987

Pagination or Media Count : 11

Abstract : Design details and results from aerodynamic rig tests are presented for four variants of a mixed-flow turbine having a design target pressure ratio of 3:1. This experimental turbine, designed to satisfy the aerodynamic requirements of a gas generator turbine in a hypothetical small turboprop engine, demonstrated a design point efficiency substantially in excess of that predicted for a single stage axial turbine of equivalent duty. Design and material implications are discussed and potential constraints identified.

Descriptors :   *GAS GENERATOR ENGINES, *AERODYNAMICS, MIXED FLOW COMPRESSORS, RIGGING, PRESSURE, RATIOS, TURBOPROP ENGINES, AERODYNAMIC CHARACTERISTICS, AERODYNAMICS, AXIAL FLOW TURBINES, EFFICIENCY, ENGINES, GAS GENERATING SYSTEMS, GAS TURBINES, JOBS, PRESSURE, RATIOS, REQUIREMENTS, TARGETS, TEST METHODS, TURBINES, TURBOPROP ENGINES, VARIATIONS.

Subject Categories : Jet and Gas Turbine Engines
      Aerodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE