Sorry but quadcopters ( that I know of ) do not use pitch angle to control height. They have constant pitch and so control height with rotor RPM.
Imagine a real aeroplane with fixed pitch pop, more throttle (RPM) faster you go but with a variable pitch prop go faster is determined by boost (angle or pitch of blade) and also by throttle. e.g boost 20" rpm 2200 will give x mph but boost at 24" same rpm goes faster because blade takes a bigger bite of the air.
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Sorry but quadcopters ( that I know of ) do not use pitch angle to control height. They have constant pitch and so control height with rotor RPM.
Imagine a real aeroplane with fixed pitch pop, more throttle (RPM) faster you go but with a variable pitch prop go faster is determined by boost (angle or pitch of blade) and also by throttle. e.g boost 20" rpm 2200 will give x mph but boost at 24" same rpm goes faster because blade takes a bigger bite of the air.
Hope this makes sense to you
Keith