(http://photoalbums.wdwmagic.com/data/500/Skywriter-Trailed-R.jpg)
(http://www.skywrite.com/img/skywriting-heart.jpg)
John C. Savage, an English aviator is said to be the father of skywriting, for which he received a patent in 1924. The first skywriting advertisement was done two year before the patent in 1922. One of the first companies to do an advertisement by skywriting was the Pepsi-Cola Company, with Andy Stims, one of the first skywriting pilots who flew for the company from 1931-1953.
Skywriting is done by specially built planes which release the smoke in burst-like motions. The white smoke is made by mixing paraffin oil with the plane exhaust, and evaporates at 1500 degrees from the heat of the engine. For those who are environmentally conscious, no worries! The oil is environmentally safe. The bursts of white smoke are controlled by electronic signals from a computer containing the master layout of the design. One plane can make up to 6 characters, and more planes are needed to make longer words or phrases, while flying simultaneously. The best skywriting conditions are little to no clouds, low winds, and cool temperatures, and the messages can last up to 20 minutes while being seen up to 30 miles away from any given directions. Skywriting is typically done in altitudes of 7,000 to 17,000 feet.
(http://www.questia.com/library/encyclopedia/skywriting.jsp)
(http://www.loc.gov/rr/scitech/mysteries/skywriting.html)
No comments:
Post a Comment