Why do some high flying jets leave white trails across the sky, but commercial airliners do not?
#77305. Asked by RabidJester. (Mar 15 07 6:54 PM)
Commercial airliners do, in fact, leave contrails.
Contrails will only occur when the outside air temperature around the aircraft is at or below -57 degrees Celsius. http://en.wikipedia.org/wiki/Contrail
Mar 15 07, 7:38 PM
A contrail is a Condensation Trail that is formed by the compressive properties of Turbine Engines. They can also be formed by the swirling winds that come off of the tips of wings. You will see WTV's when a plane make a sudden aerodynamic maneuver that causes excessive air compression.
A similar phenomena can occur when a Jet exceeds the speed of sound.
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