wing-tip trails

wing-tip trails

Very thin transient trails emanating from the tips of the wings and at times also from the tailplane of an aircraft. They are formed by the reduction of pressure at the extremities of the wings of an aircraft resulting from adiabatic expansion, causing a reduction of the temperature to below the dew point. The wing-tip trails are more prominent when aircraft are in high g maneuvers.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved