The effect of wind tunnel turbulence upon the forces measured on models

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1. Reasons for inquiry: The tests were undertaken to find the effect of turbulence in the air stream upon the lift and drag forces measured on models in the four-foot wind tunnel at the Massachusetts Institute of Technology. 2. Range of investigation: Maximum lifts and minimum drags were measured on Gottingen-387 and R.A.F.-15 airfoils, minimum drag on a streamlined strut, and the static pressure gradients for different conditions of turbulence. 3. Results and further developments: The results show that the scale of the turbulence (as defined in this report) has a marked effect upon the measured forces on models tested ... continued below

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Lepage, W L & Nichols, J T May 1, 1924.

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  • Main Title: The effect of wind tunnel turbulence upon the forces measured on models
  • Series Title: NACA Technical Notes

Description

1. Reasons for inquiry: The tests were undertaken to find the effect of turbulence in the air stream upon the lift and drag forces measured on models in the four-foot wind tunnel at the Massachusetts Institute of Technology. 2. Range of investigation: Maximum lifts and minimum drags were measured on Gottingen-387 and R.A.F.-15 airfoils, minimum drag on a streamlined strut, and the static pressure gradients for different conditions of turbulence. 3. Results and further developments: The results show that the scale of the turbulence (as defined in this report) has a marked effect upon the measured forces on models tested in the tunnel as well as on the pressure gradient, and it is recommended that further investigation of the phenomena be made with the aid of smoke and small wind vanes.

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  • Accession or Local Control No: 93R10251
  • URL: http://hdl.handle.net/2060/19930080961 External Link
  • Report No.: NACA-TN-191
  • Center for AeroSpace Information Number: 19930080961
  • Archival Resource Key: ark:/67531/metadc53853

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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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Creation Date

  • May 1, 1924

Added to The UNT Digital Library

  • Nov. 11, 2011, 7:22 p.m.

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  • March 27, 2018, 2:22 p.m.

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Lepage, W L & Nichols, J T. The effect of wind tunnel turbulence upon the forces measured on models, report, May 1, 1924; (digital.library.unt.edu/ark:/67531/metadc53853/: accessed July 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.