Measurements of Atmospheric Turbulence on Seattle-Alaska Airways

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Measurements of Atmospheric Turbulence on Seattle-Alaska Airways

Funk, Jack

For about the past year, American Airlines has been engaged in obtaining data on various uses of airborne radar under routine operating conditions. This work is under contract to the Navy Department, Bureau of Ships, and includes the investigation of radar as a navigational aid and terrain collision warning device and its use in icing and turbulence detection. In view of the work of the National Advisory Committee for Aeronautics on atmospheric turbulence, the NACA was requested to participate in the tests to the extent of obtaining and evaluating the turbulence data for use in the turbulence-detection phase of the work. Gust measurements and airborne radar observations were consequently obtained in February and March 1947 during routine flights of an American Airlines airplane on the Seattle-Alaska airways. Unfortunately, the weather conditions encountered during the flights gave no well-defined radar echoes and no comparison between radar indications end turbulence could be made. The gust data for the route, however, are of interest from an operational standpoint, and are presented herein for the information of the Navy Department in accordance with previous arrangements.