Patent n. 4.412.654 (November, 1, 1983)
Laminar Microjet atomizer and method of aerial spraying of liquids
http://www.scribd.com/doc/61066269/4412654-Laminar-Microjet-Atomizer-and-Me
Abstract
A laminar microjet atomizer and method of aerial spraying involve the use of a streamlined body having a slot in the trailing edge thereof to afford a quiescent zone within the wing and into which liquid for spraying is introduced. The liquid flows from a source through a small diameter orifice having a discharge end disposed in the quiet zone well upstream of the trailing edge. The liquid released into the quiet zone in the slot forms drops characteristic of laminar flow. Those drops then flow from the slot at the trailing edge of the streamlined body and discharge into the slipstream for free distribution.
Read article here: http://www.tankerenemy.com/2011/08/contrails-aerodinamiche-no-un-brevetto.html
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