Slowrotor,
Prouty has a way of expressing rotorcraft activities with very little math. His book 'Military Helicopter Design Technology' should be of interest. It is 135 pages of conceptual overview.
As you mention, Nick's knowledge and his clarity in expressing it would certainly add significantly to Prouty's contribution in this area.
Edited to add picture; 'cause Stringfellow Dork will probably ask for more picturers. 