NORMAL CONTRAIL PHOTOGRAPHS (2)

NORMAL CONTRAIL PHOTOGRAPHS (2)

Santa Fe, NM June 1999

Provided for Control Purposes

This contrail sequence of four photos was taken over a 30 second interval.

Notice the dissipation of the trail within approximately a 30 second interval. The camera was held stationary on the contrail after the plane passed. Notice that none of the trails are coming directly from the tail of the airplane.

normal contrail 5a normal contrail 5b
normal contrail 5c normal contrail 5d

NORMAL CONTRAIL PHOTOGRAPHS (3)

NORMAL CONTRAIL PHOTOGRAPHS (3)

Santa Fe, NM May 1999

Provided for Control Purposes

This contrail sequence of three photos was taken over a 30 second interval.

Notice the gradual formation of the contrail, and the evaporation of the trail within approximately a 30 second interval. The camera was held stationary on the contrail after the plane passed.normal contrails picture B1normal contrails picture B2normal contrails picture B31

NORMAL CONTRAIL PHOTOGRAPHS

NORMAL CONTRAIL PHOTOGRAPHS

Santa Fe, NM May 1999

Provided for Control Purposes

This contrail sequence of four photos was taken over a 45 second interval.

Notice the gradual formation of the contrail, and the dissipation of the trail within approximately a 45 second interval. The camera was held stationary on the contrail after the plane passed. Notice none of the trails are coming directly from the tail of the airplane.

normal contrails picture 1 normal contrails picture 2
normal contrails picture 3 normal contrails picture 4

Here is another normal contrail, notice the gradual formation as it cools from the engine, as opposed to forming discretely at the tail surface:

normal contrails picture 5