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... A new kind of coating has been developed to apply to the aircraft surface in providing efficient and durable solution to the aircraft icing problem. The deicing coating is made of silicone elastomer and alkanes (Guan et al., 2010). It takes advantage of the phase transition of alkanes in silicone elastomer with changing temperature to achieve the deicing property. ...
A new kind of deicing coating is developed to provide aircraft with efficient and durable protection from icing-induced dangers. The icing wind tunnel experiment is indispensable in confirming the usefulness of a deicing coating. Due to the high cost of each batch relative to the available budget, an efficient design of the icing wind tunnel experiment is crucial. The challenges in designing this experiment are multi-fold. It involves between-block factors and within-block factors, incomplete blocking with random effects, related factors, hard-to-change factors and nuisance factors. Traditional designs and theories cannot be directly applied. To overcome these challenges, we propose using a step-by-step design strategy that includes applying a cross array structure for between-block factors and within-block factors, a group of balanced conditions for optimizing incomplete blocking, a run order method to achieve the minimum number of level changes for hard-to-change factors, and a zero aliased matrix for the nuisance factors. New (theoretical) results for D-optimal design of incomplete blocking experiments with random block effects and minimum number of level changes are obtained. Results of the experiments show that this novel deicing coating is promising in offering both high efficiency of ice reduction and a long service lifetime. The methodology proposed here is generalizable to other applications that involve non-standard design problems.
The factors characterizing the adhesion of water to the coating surface are analyzed. The compatibility of polymer components
and its influence on the characteristics determining the anti-icing properties of coatings are considered. It is demonstrated
that the use of the complementing results obtained by physicochemical methods of investigations and operational, accelerated,
and natural tests makes it possible to properly choose and optimize the coating compositions.