Calibration and lag of a Friez type cup anemometer Page: 2 of 14
This report is part of the collection entitled: National Advisory Committee for Aeronautics Collection and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
NASA Technical Ubr-
1 1 11 il 'Ii ll l ! !f f'lll i l 1 " l
3 1-176 01431 9371 "
- - --- -- _
NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS.
TECHNICAL NOTE NO. 341.
CALIBRATION AND LAG OF A FRIEZ TYPE CUP ANEMOMETER.
By Robert M. Pinkerton,
Summar y
Tests on a Friez type cup anemometer have been made in the
Variable Density Wind Tunnel of the Langley Memorial Aeronau-
tical Laboratory to calibrate the instrument and to determine
its suitability for velocity measurements of wind gusts. The
instrument was calibrated against a Pitot-static tube placed
directly above the anemometer at air densities corresponding
to sea level, and to an altitude of approximately 6000 feet.
Air-speed acceleration tests were made to determine the lag
in the instrument reading. The calibration results indicate
that there should be an altitude correction. It is concluded
that the cup anemometer is too sluggish for velocity measure-
ments of wind gusts.
Int r o duct i o n
One of the most important items under discussion by the
Subcommittee on Meteorological Problems at a meeting early in
1929, was the study of the structure .of the atmosphere and the
measurement of gustiness. At this time consideration was given
to the question of instrument requirements, and it was the con-sensus of opinion of the representatives of the Weather Bureau
Upcoming Pages
Here’s what’s next.
Search Inside
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Pinkerton, Robert M. Calibration and lag of a Friez type cup anemometer, report, June 1930; (https://digital.library.unt.edu/ark:/67531/metadc54085/m1/2/: accessed May 4, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.