Accession Number : AD0864273

Title :   Low Altitude Atmospheric Turbulence LO-LOCAT Phase III Interim Report. Volume II. Instrumentation and Data Processing Details, Gust Velocity Data, and Test Log.

Descriptive Note : Interim summary rept. 17 Apr 68-8 Jan 69,

Corporate Author : BOEING WICHITA CO KS

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

Report Date : OCT 1969

Pagination or Media Count : 323

Abstract : The contents of the report describe accomplishments during the first half of the Low-Level Critical Air Turbulence (LO-LOCAT) Phase III program. Also included are time histories of some of the larger magnitude gust velocities recorded over the Peterson Field, Colorado route. Approximately 72 hours of low-level (0-1000 feet) turbulence and associated meteorological data recorded from August 16, 1968, through January 8, 1969, are presented. The turbulence environment is analyzed in terms of gust velocity primary peaks, amplitude samples, rms values, maximum values and derived equivalent gusts. Mathematical expressions for turbulence spectra and scale length statistics, and correlations between atmospheric gust velocities and meteorological and geophysical phenomena are shown. The most predominant characteristics of these data are the increases in rms values, scale lengths, Taylor micro scales and maximum gust values as compared to the LO-LOCAT Phases I and II data. These differences are attributed to the increased speed of the Phase III airplane which is providing a better definition of the longer wavelengths of atmospheric turbulence. Instrumentation details, calibrations and checks, data processing, gust velocity data (power spectra, peak and amplitude count, etc.) and test logs are presented in Volume II. (Author)

Descriptors :   (*CLEAR AIR TURBULENCE, LOW ALTITUDE), GUSTS, CORRELATION TECHNIQUES, INSTRUMENTATION, CALIBRATION, DATA PROCESSING, POWER SPECTRA.

Subject Categories : Meteorology

Distribution Statement : APPROVED FOR PUBLIC RELEASE