Originally Posted by
ryan1234
Indicated stall speed does change because CLmax decreases (i.e. critical AoA) with an increase in altitude, thus a higher stall "speed".
Ryan Just to clarify any speed used in an equation whether referred to as speed or velocity refers to True airspeed not indicated airspeed. You are correct........
true stall speed increases with altitude not indicated. indicated stall speed is constant with altitude if other factors (weight, cg, bank, ect) are constant. for an explanation see my previous post.