Title says it all. Google wont tell me this, so I decided to come here and ask. So, please help me.
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In: Engineering
Pilot here who does pilot things on occasion.
The propeller blades are linked to a piston inside the propeller hub that moves forward and aft under oil pressure in response to the pilot’s controls. As the piston moves, it pushes against and rotates the propeller blades in their sockets and alters their pitch. This whole assembly rotates as the propeller spins.
There’s a plate spinning with the propeller that gets pushed forward and back, and there’s a linkage to each blade that rotates it when this happens. It might help to search “variable pitch propeller mechanism”. A more complicated version of the same mechanism, called a swash plate, is used to control the main rotor on a helicopter.
As described in other posts, the blades are moved using oil pressure via a piston in the propeller hub that connects to the blades.
The way that the force to move the spinning propeller gets to the propeller is through oil passageways in the propeller shaft. Much the same way that lubrication oil is passed from the crankcase through main bearings to the crankshaft, then through passageways in the crankshaft to the connecting rods and through passageways in the connecting rods tot he piston’s wrist pins.
[https://www.flight-mechanic.com/constant-speed-propellers/](https://www.flight-mechanic.com/constant-speed-propellers/)
[https://www.boldmethod.com/learn-to-fly/aircraft-systems/how-a-constant-speed-prop-works/](https://www.boldmethod.com/learn-to-fly/aircraft-systems/how-a-constant-speed-prop-works/)
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