Accession Number : AD0287106

Title :   AGGLOMERATION OF CLOUD PARTICLES AND PROJECT HI-CUE PARTICIPATION

Corporate Author : MICHIGAN UNIV ANN ARBOR COLL OF ENGINEERING

Personal Author(s) : DINGLE,A. NELSON

Report Date : JUN 1962

Pagination or Media Count : 1

Abstract : The several components necessary to conduct experimental observations of the coalescence of cloud droplets under the influence of an introduced vortex were developed. These components include a laboratory cloud box (vertical lowspeed tunnel), a vortex-generating mechanism consisting of an airfoil and a propulsion device, and a telemicro camera capable of 5x magnification of objects 8 in. from the camera objective. Analysis of the effects of a model vortex upon a population of drops was done by means of electronic analog techniques, and these support the hypothesis that a single vortex tends to cause drops to become concentrated in a concentric band. The likelihood of collisions is thus increased. Radar studies of chaff drops in Project Hi-Cue, 1959, show that in one isolated case, a circulation did occur. Further experiments along these lines are recommended. Data collected at Flagstaff under Project Hi-Cue, 1961, are currently under analysis. The data logs for the raindrop-size spectrometer, the two-theodolite pibals, and the APQ-40 radar are included. In addition the results of basic computations on the raindrop-size and the pibals are reported. (Author)

Descriptors :   *ARTIFICIAL PRECIPITATION, *ATMOSPHERE MODELS, *CLOUDS, *TURBULENCE, *VORTEX GENERATORS, DATA, DROPS, ELECTRONIC EQUIPMENT, MEASUREMENT, METEOROLOGY, SPECTROSCOPY, TABLES(DATA), TEST METHODS

Distribution Statement : APPROVED FOR PUBLIC RELEASE