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The CP and FP stand for CP = Collective Pitch and FP = Fixed Pitch.
FP means the rotor blades are fixed to a certain degree of angle of attack. Or simplified means Blade Pitch is Fixed. To accend/descent heli, u change the motor speed or throttle.
CP means the rotor blades are variable in angle of attack. It can go from -ve degree to 0 degree to +ve. To accend/descent heli, u change the pitch instead.
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