The book explains how to calculate the power required to hover and introduces the Figure of Merit , a standard efficiency metric for rotors.
If you successfully acquire the "principles of helicopter aerodynamics by gordon p leishmanpdf," do not attempt to read it like a novel. Follow this strategy: The book explains how to calculate the power
"Principles of Helicopter Aerodynamics" by J. Gordon Leishman documents the evolution of vertical flight from early conceptual designs to a mathematically rigorous engineering discipline. The text covers the development of rotor technology, including the autogiro, and addresses modern aerodynamic challenges such as blade vortex interaction and rotor noise. Read the full details at Cambridge University Press Cambridge University Press & Assessment Principles of Helicopter Aerodynamics 2nd Edition including the autogiro