This report summarizes the results of an Air Force-sponsored Turbine Exit Guide Vane (EGV) Technology Development Program. In the EGV program, non-series EGV airfoils, designed for spanwise maximum inlet Mach numbers of 0.75 and average gas turnings of 38.0 deg (loading levels above those typical of state-of-the-art EGV's) demonstrated high diffusion efficiencies (72.0%) and low total pressure losses (1.5%). The non-series EGV airfoils were designed (using computer graphics design techniques with predicted pressure distributions and predicted boundary layer characteristics) by tailoring the airfoil camber and thickness distributions to minimize the airfoil suction surface rate of diffusion, therefore reducing the potential for flow separation. The non-series EGV airfoils also demonstrated performance improvements relative to equivalent NASA series airfoils.
Turbine Exit Guide Vane Program
1977
317 pages
Report
No indication
English
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