1. Federal Aviation Administration. “Title 14 Code of Federal Regulations” Section 21.21.
2. Papadakis, M., and Hung, K. E. “Experimental Investigation of Water Droplet Impingement on Airfoils, Finite Wings, and an S-Duct Engine Inlet.” National Aeronautics and Space Administration, 2002.
3. Rumsey, C. R. “Turbulence Modeling Resource.” Vol. 2019, NASA Langley Research Center, https://turbmodels.larc.nasa.gov/, 2019.