An experimental study of the overspeeding error for helicoid anemometers in periodic air flows is described. The ranges of amplitude and frequency for which a simple nonlinear model for the dynamic response of such instruments remains valid are presented. It is shown that the model is valid for typical atmospheric applications of such instruments. A simple method is presented whereby the effects of inertial lag and nonlinearity may be taken into account in obtaining measurements of alongwind power spectra in the atmosphere.

  • Supplemental Notes:
    • See also report dated Nov 75, PB-246 861. Sponsored in part by Federal Highway Administration, Washington, DC. Structures and Applied Mechanics Div.
  • Corporate Authors:

    National Bureau of Standards

    Gaithersburg, MD  United States 

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • McMichael, J M
    • Cleveland, W G
  • Publication Date: 1978-8

Media Info

  • Pagination: 17 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00191073
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NBSIR-78-1505, NBS2130482
  • Files: NTIS, USDOT
  • Created Date: Apr 25 2002 12:00AM