Demonstrate a Low Biochemical Oxygen Demand Aircraft Deicing Fluid

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Demonstrate a Low Biochemical Oxygen Demand Aircraft Deicing Fluid

M. Wyderski / J. Davila

Aircraft deicing fluids are required to remove frozen precipitation from aircraft prior to flight, ensuring mission capability in winter conditions. The primary component in conventional fluids is propylene glycol (PG), which can exhibit a high biochemical oxygen demand (BOD) when it degrades. The aim of this demonstration was to investigate whether one reduced PG aircraft deicing fluid, EcoFlo (and later EcoFlo II), was effective at deicing aircraft while having no negative effects on flight performance, operational safety and aircraft materials. Evaluation included laboratory testing for compatibility with military aircraft materials, wind tunnel testing for fluid residue concerns (blurring windows/optical ports and leaving slippery surfaces), and an aircraft demonstration for effective and safe removal of frozen precipitation. The demonstration indicated that residue issues are still an obstruction to implementation and further reformulation and improvement must be considered.