Accession Number:

AD0683542

Title:

INVESTIGATION OF THERMALS WITH THE HELP OF GLIDERS,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1968-10-02

Pagination or Media Count:

29.0

Abstract:

A review is presented of the results of studies made by Hess 1961, Vulfson 1961, and Parchevskiy 1958 on the structure of thermals. Results are given for similar experiments carried out by Soviet glider pilots during the 1964 All-Union Glider Contest at Orel. A short series of 15 barograms recorded by a glider at that time is analyzed to illustrate the methods used in a study of the structure of thermals. Characteristics analyzed included air speed of the glider in and out of the thermals, glider rate of climb, number of thermals encountered per unit of flight distance spirals and flight time, speeds of the thermals, levels at which the thermals began and ended, their diameters, the frequencies of rising and descending currents, and the general type of thermal, i.e., streamlike or cellular. A discussion on the apparatus used to process the data includes an analysis of non-Soviet equipment and a brief description of two models of an apparatus proposed by the Main Geophysical Observatory. Author

Subject Categories:

  • Atmospheric Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE