Data for Design of Entrance Vanes from Two-Dimensional Tests of Airfoils in Cascade

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As a part of a program of the NACA directed toward increasing the efficiency of compressors and turbines, data were obtained for application to the design of entrance vanes for axfax-flow compressors or turbines. A series of blower-blade sections with relatively high critical speeds have been developed for turning air efficiently from 0 deg to 80 deg starting with an axial direction. Tests were made of five NACA 65-series blower blades (modified NACA 65(216)-010 airfoils) and of four experimentally designed blower blades in a stationary cascade at low Mach numbers. The turning effectiveness and the pressure distributions of these blade ... continued below

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Zimmey, Charles M. & Lappi, Viola M. January 1, 1945.

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As a part of a program of the NACA directed toward increasing the efficiency of compressors and turbines, data were obtained for application to the design of entrance vanes for axfax-flow compressors or turbines. A series of blower-blade sections with relatively high critical speeds have been developed for turning air efficiently from 0 deg to 80 deg starting with an axial direction. Tests were made of five NACA 65-series blower blades (modified NACA 65(216)-010 airfoils) and of four experimentally designed blower blades in a stationary cascade at low Mach numbers. The turning effectiveness and the pressure distributions of these blade sections at various angles of attack were evaluated over a range of solidities near 1. Entrance-vane design charts are presented that give a blade section and angle of attack for any desired turning angle. The blades thus obtained operate with peak-free pressure distributions. Approximate critical Mach numbers were calculated from the pressure distributions.

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  • Accession or Local Control No: 93R23298
  • URL: http://hdl.handle.net/2060/19930093972 External Link
  • Report No.: NACA-WR-L-188
  • Report No.: NACA-ACR-L5G18
  • Center for AeroSpace Information Number: 19930093972
  • Archival Resource Key: ark:/67531/metadc63062

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National Advisory Committee for Aeronautics Collection

The National Advisory Committee for Aeronautics (NACA) was a U.S. federal agency founded on March 3, 1915 to undertake, promote, and institutionalize aeronautical research. On October 1, 1958 the agency was dissolved, and its assets and personnel transferred to the newly created National Aeronautics and Space Administration (NASA).

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  • January 1, 1945

Added to The UNT Digital Library

  • Nov. 17, 2011, 5:13 p.m.

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  • April 9, 2018, 3:01 p.m.

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Zimmey, Charles M. & Lappi, Viola M. Data for Design of Entrance Vanes from Two-Dimensional Tests of Airfoils in Cascade, report, January 1, 1945; (digital.library.unt.edu/ark:/67531/metadc63062/: accessed October 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.