A Breakthrough Thickener Technology for Aircraft Anti-icing Fluids
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A Breakthrough Thickener Technology for Aircraft Anti-icing
Fluids - A Successful Product Commercialization Story
Yaman Bölük
Professor, Nanofibre Chair in Forest Products
Department of Civil and Environmental Engineering
Natural Resources Engineering Facility
Edmonton, Alberta
Canada
With an increasing amount of airline traffic, aircrafts spend longer time between the gate
departure and takeoff time. Under freezing precipitation conditions aircrafts are needed to
be anti-iced to keep the aircraft surfaces clean during this longer waiting time. Aircraft
Anti-icing Fluids (AAF) are thickened Non-Newtonian glycol solutions which meet
complex multiple performance requirements. The most important and conflicting two
performance requirements are: 1) protection time against freezing precipitation and; 2)
lift loss due to the presence of AAF during the takeoff. Making AAF with longer
protection time also causes higher undesired lift loss effect. Effects of fluid rheology on
protection time and lift loss were identified by investigating fluid behavior in
environmental col chamber and cold wind tunnel. Then an associative thickener
technology was developed to formulate an Aircraft Anti-icing Fluid which gave a longer
protection time with very little lift loss. The research resulted the commercialization of a
breakthrough Society of Automotive Engineers (SAE) Type IV Anti-icing Fluid