Propellers

Question 1

What is the purpose of a propeller

Answer 1

To create thrust in either pull or push the airplane through the air

Question 2

What are the two types of propeller Configurations

Answer 2

Tractor type and pusher type

Question 3

What type of propeller has a blade angle built into the propeller and cannot be changed

Answer 3

A fixed pitch propeller

Question 4

What is the purpose of the metal tipping on the leading edge of a wooden propeller

Answer 4

Protects the propeller from damage caused by FOD, During landing, taxing, and takeoff

Question 5

What tool is used to determine propeller blade angle

Answer 5

A universal propeller protractor

Question 6

What are the arrow dynamic forces and loads acting on a rotating propeller blade

Answer 6

Centrifugal force, aerodynamic twisting, centrifugal twisting, torque bending, and thrust bending forces

Question 7

What is the meaning of a propeller blade back and face

Answer 7

Back is curved, face is flat

Question 8

What should be used to clean aluminum and steel propeller blades and hubs

Answer 8

They should be washed with a suitable cleaning solvent using a brush or cloth

Question 9

What position are used on a balance stand to check a two plated propeller for static balance

Answer 9

First the vertical position, and then the horizontal position

Question 10

Can a fixed pitch propeller’s Pitch be changed

Answer 10

No

Question 11

Why do you put the blades of counterweight propeller into high pitch before stopping the engines

Answer 11

Protects from dirt and moisture in the air, this is particularly important if the airplane engine will not be operated for several days

Question 12

Why are cones installed on spline shafts with a propeller

Answer 12

The cone Centers the propeller on the shaft as they are forced towards each other by the tightening of the retaining nut

Question 13

How is feathering accomplished on a constant speed counterweight propeller

Answer 13

By releasing the governor oil pressure on the counter weights

Question 14

What type of systems are used for deicing propellers

Answer 14

Fluid or electrical the icing systems

Question 15

What is the purpose of a slinger ring On some propeller installations

Answer 15

Propeller deicing fluid is ejected from the stationary nozzle on the engines into a U-shaped channel attached to the rear of the propeller assembly. This channel is called the slinger ring. The fluid under pressure uses and Trickle force transferred through the small tube to the propellers leading edge

Question 16

What is blade tracking

Answer 16

The process of determining the position of the tips I have a propeller blade relative to each other

Question 17

Do the counterweights on a conscience be propeller increase or decrease the blade angle

Answer 17

Counterweights increase the pitch of the blades

Question 18

What should you adjust if a pilot requires 50 more RPM on an aircraft equipped it with a constant speed propeller

Answer 18

Adjust the governors prop lever set screw

Question 19

What adjustments or power plant mechanics allowed to make to prop governor

Answer 19

Only maximum RPM stop

Question 20

Why are propellers indexed to the crankshaft of an engine

Answer 20

To reduce vibrations to a minimum

Question 21

Can traverse cracking in a propeller be repaired

Answer 21

No

Question 22

What is the Alpha range in Beta range of a propeller

Answer 22

Beta Range is the condition of the propeller during ground operations and in the reverse pitch position

Alpha range is the propeller position when the aircraft is in flight

Question 23

When changing metal bushings on a wooden propeller Assembly, a thorough inspection of the bolt holes should be accomplished why

Answer 23

To check for elongation of holes