Observations in Flight of the Region of Stalled Flow Over the Blades of an Autogiro Rotor

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Description

"The flow over the inner halves of the rotor blades on a Kellet YG-1B autogiro was investigated in flight by making camera records of the motion of silk streamers attached to the upper surfaces of the blades. These records were analyzed to determine the boundaries of the region within which the flow over the blade sections was stalled for various tip-speed ratios. For the sake of comparison, corresponding theoretical boundaries were obtained. Both the size of the stalled area and its rate of growth with increasing tip-speed ratio were found to be larger than the theory predicted, although experiment agreed … continued below

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[19] p. : ill.

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Bailey, F. J., Jr. & Gustafson, F. B. December 1939.

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This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and was provided by the UNT Libraries Government Documents Department to the UNT Digital Library, a digital repository hosted by the UNT Libraries. It has been viewed 86 times. More information about this report can be viewed below.

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  • Main Title: Observations in Flight of the Region of Stalled Flow Over the Blades of an Autogiro Rotor
  • Series Title: NACA Technical Notes

Description

"The flow over the inner halves of the rotor blades on a Kellet YG-1B autogiro was investigated in flight by making camera records of the motion of silk streamers attached to the upper surfaces of the blades. These records were analyzed to determine the boundaries of the region within which the flow over the blade sections was stalled for various tip-speed ratios. For the sake of comparison, corresponding theoretical boundaries were obtained. Both the size of the stalled area and its rate of growth with increasing tip-speed ratio were found to be larger than the theory predicted, although experiment agreed with theory with regard to shape and general location of the stalled area" (p. 1).

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[19] p. : ill.

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  • Accession or Local Control No: 93R10798
  • OCLC: 1156324007
  • URL: http://digital.library.unt.edu/ark:/67531/metadc54525 External Link
  • Report No.: NACA-TN-741
  • Center for AeroSpace Information Number: 19930081508
  • Archival Resource Key: ark:/67531/metadc54525

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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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  • December 1939

Added to The UNT Digital Library

  • Nov. 14, 2011, 10:28 p.m.

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  • June 4, 2020, 12:09 p.m.

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Bailey, F. J., Jr. & Gustafson, F. B. Observations in Flight of the Region of Stalled Flow Over the Blades of an Autogiro Rotor, report, December 1939; (https://digital.library.unt.edu/ark:/67531/metadc54525/: accessed May 26, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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