2 position propellers ppt

Question 1

Hamilton Standard Two Position Propeller is a Hydraulic Counterweight type propeller that’s used to control the _____ and _____ of the propeller.

Answer 1

PITCH AND SPEED

Question 2

The hydraulic counterweight propeller consists of a:

Answer 2

Cylinder Assembly
Counterweight Assembly
Hub assembly
Blade Assembly

Question 3

Hamilton Standard two position propeller uses ___ _____ to rotate the blades to LOWER blade angles (Fine pitch or Increase Propeller RPM).

Answer 3

oil pressure

Question 4

______ Force acting on the counterweights attached to the blades to rotate the blades to higher blade angles (Coarse pitch or Lower Propeller RPM)

Answer 4

Centrifugal force

Question 5

Hamilton Standard Two Position Propeller Shut-down in ______ _______.

it forces oil back to the engine sump to prevent corrosion on piston and provide enough oil for the next engine start.

Answer 5

coarse pitch

Question 6

Disadvantage of this Hamilton Standard Two position propeller.

Answer 6

During extreme cold, the oil in the piston could also become very thick and prevent proper propeller operation.

Question 7

An ____ in R.P.M. increases the centrifugal force on the counterweights

Answer 7

increase

Question 8

The pilot will operate the _____ _____ to fine pitch for take off then move it to a coarse pitch for cruise.

Answer 8

selector valve

Question 9

The ability to increase engine efficiency

Pilot has the ability to change propeller pitch

Helps to minimize over speed conditions

Added extra Power if you have been operating with a fixed pitch
propeller

Answer 9

Features of Hamilton Standard Two Position Propeller

Question 10

Does not maintain a constant propeller R.P.M.

More maintenance required

A need for more calibrated tools

Only 2 propeller positions

Heavy & Bulky hub assembly

Answer 10

disadvantages