Good day.
Question is why the best glide speed (V_LD) is higher than best angle of climb speed (V_X)?
Reason for asking: V_LD is the best lift-to-drag ratio. Both depend on Angle of Attack (via coefficients of lift and drag), speed (induced + parasite). But NOT thrust setting. Thus whatever thrust I apply, I should have this “best angle” (either positive or negative, whatever, — important is the fact it’s highest possible angle) speed and Angle of Attach the same!
Apparently I’m wrong: as the explanation of best angle ob climb/glide here tells, the speeds of V_X and V_LD are different. I also know this from my AFM (V_X = 52 kts, V_LD = 72 kts).
But could you please tell me the precise factr which makes two speed different? Thanks!
Alex