Hover power calculation formula?
Purchased the text Helicopter Theory by Wayne Johnson expecting to find a formula for calculating the power required for hover.
The book suggests several different methods to use: momentum theory, blade element theory, force balance method, energy balance method or digital computer.This book is over 1000 pages, yet does not list the units needed to make use of the math formulas. I am stuck.
Can someone give me a simple formula for hover power?
Also please list the units and a sample calculation.
Thanks