The climb angle y can be expressed as: W 2k y = sin-1 Pornpy-11 PC Do (+) -V S -V-2 P W To find the airspeed so that we can climb at the maximum climb angle, we need to find: y av 0. d) Find an expression for the airspeed for the maximum climb angle and verify that this is 22.166m/s or 43.087 knots. e) Find the best climb angle in degrees.