Accession Number : AD0776695

Title :   Airborne Wake Vortex Detection.

Descriptive Note : Final rept. Sep 72-Mar 73,

Corporate Author : RAYTHEON CO SUDBURY MASS EQUIPMENT DEVELOPMENT LABS

Personal Author(s) : Fridman,J. D.

Report Date : MAR 1974

Pagination or Media Count : 89

Abstract : The vortices generated by large aircraft can create dangerous encounter situations with other airplanes as a result of their slow dissipation rates or in conjunction with unfavorable meteorological conditions that prolong their presence over a runway. Active and passive remote sensing systems were assessed to determine the feasibility of detecting aircraft trailing vortices using instrumentation on-board an aircraft. It was found that a modification of the front-end receiver of a 10 GHz weather radar system or a change of frequency to 35 GHz may allow vortex identification over a range of several kilometers. The CO2 laser coherent Doppler radar technique and passive radiometric techniques show considerable promise.

Descriptors :   *Wake, *Transport aircraft, *Hazards, *Detection, Vortices, Airports, Aviation safety, Remote detectors, Feasibility studies, Sensitivity, Onboard, Modification, Radar equipment, Carbon dioxide lasers, Radiometry, Systems engineering

Subject Categories : Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE