Closure to “Discussion of ‘The Development of a Second Generation of Controlled Diffusion Airfoils for Multistage Compressors’” (1986, ASME J. Turbomach., 108, pp. 40–41)

R. F. Behlke

doi:10.1115/1.3262022

Closure to “Discussion of ‘The Development of a Second Generation of Controlled Diffusion Airfoils for Multistage Compressors’” (1986, ASME J. Turbomach., 108, pp. 40–41)

Journal of Turbomachinery ◽

10.1115/1.3262022 ◽

1986 ◽

Vol 108 (1) ◽

pp. 41-41

Author(s):

R. F. Behlke

Keyword(s):

Second Generation ◽

Controlled Diffusion ◽

Multistage Compressors

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The Development of a Second-Generation of Controlled Diffusion Airfoils for Multistage Compressors

Volume 1: Aircraft Engine; Turbomachinery ◽

10.1115/85-igt-9 ◽

1985 ◽

Author(s):

R. F. Behlke

Keyword(s):

Large Scale ◽

First Generation ◽

Second Generation ◽

Flow Region ◽

Operating Conditions ◽

Design Model ◽

Controlled Diffusion ◽

Significant Performance ◽

Multistage Compressors ◽

High Mach

The evolution of Controlled Diffusion Airfoils is traced from inception of the theoretical design model to demonstration of significant performance gains at engine operating conditions in a multistage compressor rig. The proven aerodynamic benefits and versatility of first-generation Controlled Diffusion Airfoil blade elements are extended to the endwall flow region using an Integrated Core/Endwall Vortex design model to produce a new full span optimized second-generation Controlled Diffusion design. Highlighted are the essential roles of extensive cascade, low speed, large scale and high Mach number compressor rig testing in developing and substantiating the second generation Controlled Diffusion technology resulting in a 1.5% increase in efficiency and 30% increase in surge-free operation relative to first-generation Controlled Diffusion Airfoils.

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Discussion: “The Development of a Second Generation of Controlled Diffusion Airfoils for Multistage Compressors” (Behlke, R. F., 1986, ASME J. Turbomach., 108, pp. 32–40)

Journal of Turbomachinery ◽

10.1115/1.3262021 ◽

1986 ◽

Vol 108 (1) ◽

pp. 40-41

Author(s):

I. G. Rice

Keyword(s):

Second Generation ◽

Controlled Diffusion ◽

Multistage Compressors

Download Full-text

The Development of a Second Generation of Controlled Diffusion Airfoils for Multistage Compressors

Journal of Turbomachinery ◽

10.1115/1.3262020 ◽

1986 ◽

Vol 108 (1) ◽

pp. 32-40 ◽

Cited By ~ 24

Author(s):

R. F. Behlke

Keyword(s):

Large Scale ◽

First Generation ◽

Second Generation ◽

Flow Region ◽

Operating Conditions ◽

Design Model ◽

Controlled Diffusion ◽

Percent Increase ◽

Significant Performance ◽

High Mach

The evolution of Controlled Diffusion Airfoils is traced from inception of the theoretical design model to demonstration of significant performance gains at engine operating conditions in a multistage compressor rig. The proven aerodynamic benefits and versatility of first-generation Controlled Diffusion Airfoil blade elements are extended to the endwall flow region using an Integrated Core/Endwall Vortex design model to produce a new full-span optimized second-generation Controlled Diffusion design. Highlighted are the essential roles of extensive cascade, low-speed, large-scale, and high Mach number compressor rig testing in developing and substantiating the second-generation Controlled Diffusion technology resulting in a 1.5 percent increase in efficiency and 30 percent increase in surge-free operation relative to first-generation Controlled Diffusion Airfoils.

Download Full-text