Fuselage-drag tests in the variable-density wind tunnel: streamline bodies of revolution, fineness ratio of 5

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Description

Results are presented of the drag tests of six bodies of revolution with systematically varying shapes and with a fineness ratio of 5. The forms were derived from source-sink distributions, and formulas are presented for the calculation of the pressure distribution of the forms. The tests were made in the N.A.C.A. variable-density tunnel over a range of values of Reynolds number from about 1,500,000 to 25,000,000. The results show that the bodies with the sharper noses and tails have the lowest drag coefficients, even when the drag coefficients are based on the two-thirds power of the volume. The data shows ... continued below

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Abbott, Ira H September 1, 1937.

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  • Main Title: Fuselage-drag tests in the variable-density wind tunnel: streamline bodies of revolution, fineness ratio of 5
  • Series Title: NACA Technical Notes

Description

Results are presented of the drag tests of six bodies of revolution with systematically varying shapes and with a fineness ratio of 5. The forms were derived from source-sink distributions, and formulas are presented for the calculation of the pressure distribution of the forms. The tests were made in the N.A.C.A. variable-density tunnel over a range of values of Reynolds number from about 1,500,000 to 25,000,000. The results show that the bodies with the sharper noses and tails have the lowest drag coefficients, even when the drag coefficients are based on the two-thirds power of the volume. The data shows the most important single characteristic of the body form to be the tail angle, which must be fine to obtain low drag.

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  • : 93R10668
  • URL: http://hdl.handle.net/2060/19930081378 External Link
  • Report No.: NACA-TN-614
  • Center for AeroSpace Information Number: 19930081378
  • Archival Resource Key: ark:/67531/metadc54304

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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

  • September 1, 1937

Added to The UNT Digital Library

  • Nov. 14, 2011, 10:28 p.m.

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  • Jan. 31, 2017, 6:04 p.m.

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Abbott, Ira H. Fuselage-drag tests in the variable-density wind tunnel: streamline bodies of revolution, fineness ratio of 5, report, September 1, 1937; (digital.library.unt.edu/ark:/67531/metadc54304/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.