Accession Number : AD0474070
Title : EXPERIMENTS ON THE DISSIPATION OF WARM FOG BY HELICOPTER-INDUCED AIR EXCHANGE OVER THULE AFB GREENLAND,
Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Personal Author(s) : Hicks, J. R.
Report Date : AUG 1965
Pagination or Media Count : 21
Abstract : Tests have demonstrated that certain types of shallow fogs can be dispersed by the downwash created by helicopters flying at near-hovering airspeeds at altitudes a few feet above the top of the fog. One helicopter can clear an area about 75 yards wide by a mile long every 10-15 minutes. This system requires unsafe flying techniques, i.e., near-hovering airspeeds during which time the helicopter is operating at almost full power, low altitudes and positions where an engine failure would probably result in a crash since the aircraft would have to descend through the fog to an unknown landing area. Therefore, this technique is recommended for emergency use only. (Author)
Descriptors : (*FOG, SCATTERING), (*GREENLAND, FOG), HELICOPTERS, HELICOPTER ROTORS, AIR TRAFFIC, AIR TRANSPORTATION, FEASIBILITY STUDIES, CONVECTION, LOW ALTITUDE, TABLES(DATA), RADIOSONDES, DOWNWASH, COUNTERMEASURES, REDUCTION.
Subject Categories : Meteorology
Distribution Statement : APPROVED FOR PUBLIC RELEASE