Mar you might check:
1, SAE Paper 2003-01-2093 authored by Robert Fleming that traces the technical story of developing the UH-60 from a design point of view.
2. Also worth looking up the US Army Flight Test reports on their sequential icing flight tests with succeeding versions/configurations of the UH-60.
In all of these, you will see that both design engineers and flight test engineers/test pilots were well aware of the impact of droplet size/temp.
Have at it.
Last edited by JohnDixson; 6th Jan 2018 at 17:07.
Reason: typo and additional thought