Air flow and particle trajectories around aircraft fuselages. III - Extensions to particles of arbitrary shape

Earlier work that produced generalized rules for obtaining trajectories of water droplets moving around aircraft fuselages has been extended to cover the case for particles of arbitrary shape. The parameters determining the major features of the trajectories are the fuselage radius and a generalized Stokes number that can be used to calculate an equivalent water drop size for particles of arbitrary shape and density. As for water drops, the maximum width of the shadow zone for sampling the particles is about one-fifth of the fuselage radius, and it occurs for those ice columns and plates of typical densities whose major dimensions are about 600 microns and 2 mm, respectively.