examine eq. (6.44) in the text. this equation is an explicit relation for vmax in terms of the thrust-to-weight ratio for the airplane, and hence allows a quick analytical calculation of vmax for jet-propelled airplanes. derive an analogous relation for vmax for a propeller-driven airplane in terms of the power-to-weight ratio (power loading). note: you will find a relation that relates power loading and vmax, but you will also discover that it is not possible to solve this equation explicitly for vmax. even so, this relation still allows a quicker solution for vmax for propeller-driven airplanes in comparison to the numerical solution discussed in sec. 6.6.