Feathering the default Bonanza

[CaptainRude91]

For the OP, it’s all explained here:

[Advanced GUIDE] Propeller Basics

Definitions First it is important to understand the following definitions when talking about propellers: Blade / Pitch angle - This is the angle between the propeller plane of rotation and the chord line of the blade. On a fixed pitch propeller this angle is fixed, on a Constant Speed Propeller (CSP), this angle is adjusted to balance engine power and propeller power absorbed, controlling the propeller RPM. Washout or twist - The blade angle on a propeller blade is not the same along the w…

And here:

[Advanced GUIDE] Constant Speed Propeller System

Introduction The purpose behind the constant speed propeller system is to achieve a high propulsive efficiency over a wide speed range. A fixed pitch propeller is only efficient over a very small speed range. A fixed pitch propeller optimized for climb will have good performance during take-off and climb (low speed) but during cruise the blade angle is too low. A fixed pitch propeller optimized for cruise has good cruise performance (high speed), but during take-off the blade angle is too larg…