Accession Number : AD0850301

Title :   Interim Analysis of Low Altitude Atmospheric Turbulence (Lo-Locat) Data.

Descriptive Note : Technical rept. 15 Apr 66-15 Sep 67,

Corporate Author : BOEING WICHITA CO KS

Personal Author(s) : Jones, G. W. ; Jones, J. W. ; Monson, K. R.

Report Date : FEB 1969

Pagination or Media Count : 129

Abstract : The contents of this report described Low-Level Critical Air Turbulence (LO-LOCAT) program accomplishments through 15 September 1967. These accomplishments cover the first year of the flight period. Utilizing four instrumented C-131B aircraft, turbulence and meteorological data were obtained at absolute altitudes below 1,000 feet while flying over specified routes located in California, Colorado, Kansas, and New York. At the one year point, approximately 600 hours of low-level turbulence data had been obtained. Analyses of these data show consistent agreement of gust velocity statistics as obtained from amplitude and peak samples. Strong Gaussian characteristics of the distributions of RMS gusts are revealed. The major meteorological influence on turbulence is found to be atmospheric stability. Also exhibited is the close correlation between experimentally determined spectra and mathematical expressions advanced by Theodore von Karman. (Author)

Descriptors :   (*CLEAR AIR TURBULENCE, LOW ALTITUDE), WIND, VELOCITY, STATISTICAL DATA, INTENSITY, STABILITY, GUST LOADS, POWER SPECTRA, METEOROLOGICAL PHENOMENA, SITE SELECTION, PERIODIC VARIATIONS, MEASUREMENT.

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE