by D. I. Bazov
Publisher: NASA 1972
Number of pages: 295
Principles of helicopter flight under various conditions are reviewed, giving special attention to the operation of the main rotor. A brief history of helicopter development is presented, together with a summary of the main components of a helicopter and a classification of the various types of helicopters. The characteristics of the main rotor and its operation during autorotation and during axial and oblique flow are considered.
Download or read it online here: Helicopter Aerodynamics