Paradox of constant speed propeller
Hello fellow aviators!
I am quite confused by the principle of constant speed/variable pitch propeller for awhile. After a few days of research I have a good idea about its' purpose and how to achieve it.
But, I don't understand why do we have to have a "rev-up, throttle back" principle.
Why do we have to do this? Why sometimes we have to select RPM first, then MP?
And how do we know if that RPM setting is optimal?
Also, it's saying that propeller setting controls RPM, throttle control MP.
How come when I increase throttle, MP increases, but RPM constant because of the governor? What's next after MP increases? Crankshaft connected to cylinder rotates faster to gearbox, and the gearbox eventually lower the rotation so RPM doesn't increase?
Thank you very much for your professional helping!
Cheers!