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  • Aircraft Design, Testing and Performance; Instrumentation and Photography  (1)
  • Aircraft Design, Testing and Performance; Instrumentation and Photography; Aerodynamics  (1)
  • 2005-2009
  • 1980-1984
  • 1940-1944  (2)
  • 1925-1929
  • 1940  (2)
Collection
Keywords
Years
  • 2005-2009
  • 1980-1984
  • 1940-1944  (2)
  • 1925-1929
Year
  • 1940  (2)
  • 1
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    Unknown
    Observations in Flight of the Region of Stalled Flow Over the Blades of the Kellett YG-1B Tapered-Blade Autogiro Rotor (1940)
    In:  CASI
    Details
    Publication Date: 2018-06-05
    Description: In conjunction with a series of tests requested by the Army Air corps on a new set of tapered rotor blades, of NACA 230 series section and built for the Kellett YG-1B autogiro, it was convenient to supplement previous studies of the region or stalled flow on rotors by making photographic observations of the flow over the blades in flight. These observations are described in this report. It is shown that the maximum radius stalled on the new rotor increases more rapidly with tip-speed ratio than was true on the rectangular-blade, Gottingen 606 section rotor previously tested on the same ship, though the increase in importance of the stalled region is not as decisive as consideration of the change in section would suggest. The increased loss in the stalled region is felt to be at least a contributing cause in the failure of the new blades to Increase the top speed of the machine.
    Keywords: Aircraft Design, Testing and Performance; Instrumentation and Photography; Aerodynamics
    Format: application/pdf
    Location Call Number Expected Availability
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    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Photographic Observations of Blade Motion of the YG-1B Autogiro Equipped with Tapered Rotor Blades (1940)
    In:  CASI
    Details
    Publication Date: 2019-07-12
    Description: This report presents the results of photographic observations in flight of the flapping, the motion about the vertical pin, and the dynamic twist of a new type tapered rotor blade on the Kellett YG-1B autogiro. The blades, which were designed by the Kellett Autogiro Corporation, made use of the NACA 230 series airfoil section, for the purpose of eliminating undesirable dynamic blade twist present in the original blades. The results reported herein show that in actual operation the new blades very closely approach the desired condition of no dynamic twist.
    Keywords: Aircraft Design, Testing and Performance; Instrumentation and Photography
    Type: E-269-1
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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