How does a propeller governor work?

What makes the concept work is the propeller governor. The governor takes in oil under pressure from the engine, usually about 50 to 70 pounds per square inch, and boosts it to 300 psi. That pressure is sent to the back side of the propeller, where its job is to push on a plunger that moves gears.

What is propeller governor system?

Filed Under: Propellers. A governor is an engine rpm-sensing device and high pressure oil pump. In a constant-speed propeller system, the governor responds to a change in engine rpm by directing oil under pressure to the propeller hydraulic cylinder or by releasing oil from the hydraulic cylinder.

What is the purpose of propeller governor?

In the case of the aircraft engine, the propeller is the load and power developed is determined by the pilot. The function of the propeller governor is to adjust the propeller blade angle so the load on the engine will maintain the desired engine rpm at the horsepower setting selected.

Where is propeller governor located?

The component in charge of it all is called the governor. The governor moves oil back and forth through the propeller hub to make sure the prop is at the pitch and speed that you want. The governor control lever is attached to the blue prop control lever in the cockpit through cables or linkages.

What are the factors influence the propeller governor operation?

During flight, the speed-sensitive governor of the propeller automatically controls the blade angle as required to maintain a constant r.p.m. of the engine. Three factors tend to vary the r.p.m. of the engine during operation. These factors are power, airspeed, and air density.

What is the primary purpose of a propeller?

The purpose of the propeller is to provide a method of propulsion so the aircraft is able to move forward through the air. The propeller itself consists of two or more blades connected together by a central hub that attaches the blades to the engine shaft.

How is the prop governor linked to the crankshaft?

Since the governor is driven through gearing from the crankshaft, governor rpm is proportional to engine rpm. This increases the propeller pitch and brings the engine rpm back to the selected value. As engine and governor rpm decrease the governor returns to the ON SPEED condition.

What are the parts of propeller governor?

It consists essentially of :

  • A gear pump to increase the pressure of the engine oil to the pressure required for propeller operation.
  • A relief valve system which regulates the operating pressure in the governor.
  • A pilot valve actuated by flyweights which control the flow of oil through the governor.

How does the Governor work on a propeller?

Propeller and Governor Operation. This animation shows the operation of the flyweights, pilot valve, lift rod, and piston inside the propeller hub. The cockpit control will put the flyweights into an underspeed or overspeed condition, moving the pilot valve and either returning oil from the propeller or sending pressure oil to it.

How does the Governor work in an aircraft?

Aircraft Propeller Governor. A governor is an engine rpm-sensing device and high-pressure oil pump. In a constant-speed propeller system, the governor responds to a change in engine rpm by directing oil under pressure to the propeller hydraulic cylinder or by releasing oil from the hydraulic cylinder. The change in oil volume in the hydraulic

How is the prop control lever attached to the propeller?

The governor control lever is attached to the blue prop control lever in the cockpit through cables or linkages. When you move the prop lever forward or back, the control lever moves as well. The threaded shaft is connected to the governor control lever.

What happens when you reduce the pitch of the propeller?

When that happens, the pilot valve moves down and oil flows out of the propeller hub, reducing the pitch of the blades. As soon as the blade pitch decreases, the engine is able to speed up again, and it resumes its normal set RPM. Overspeed. When you pitch the airplane down, the governor takes over again.