The U.S. Forest Service’s Qualified Product List (QPL) provide guidance on the range of permissible mix ratios that can be used for water-enhancing products. Due to the proprietary nature of these water-enhancing products, there are several unknowns about the rheology of these products within the stipulated mix ratio bounds.
This study focuses on mapping the viscosity of various suppressant products as a function of their product mix ratios. Results from this study show an enormous range of viscosities that can be obtained from different products, each showing different non-linear relationships with mix ratios.
Insight from this data can help understand what an optimum viscosity range is for desired drop characteristics during aerial operations.