$2\mathrm{.}4$ A piston$-$prop aircraft has a wing loading of $1600\frac{N}{m^2},$ wing area of

$25m^2$ and its drag polar is given by $C_D=0\mathrm{.}025+0\mathrm{.}05C_L^2.$ The

maximum lift coefficient is $1\mathrm{.}5.$ The reciprocating engine develops

$750$ kW at sea level, and the propulsive efficiency of the engine$-$

propeller combination is $0\mathrm{.}85.$ Draw the power$-$available and

power$-$required curves at sea level. Determine the maximum and

minimum speeds for level flight at sca level.

What is the minimum power required for level flight at sea level?

Determine the corresponding velocity and lift coefficient. NO MATLAB PLEASE.