MEP.1.1.1.2 Constant Speed Propeller Flashcards
1
Q
What does the constant speed propeller offer?
A
Much higher level of efficiency, and some complication in its operation
2
Q
What’s used to drive the blade angle?
A
Oil pressure
3
Q
What controls the angle and what is it for?
A
A governor mechanism, to maintain selected RPM
4
Q
What causes a loss of oil pressure?
A
Blades go to the full fine position
5
Q
What does the pilot have in addition to the RPM indicator?
A
A Manifold Pressure Gauge (MAP)
6
Q
What’s the unit of the MAP indicator?
A
Inches of mercury
7
Q
How is power set?
A
By a combination of MAP and RPM
8
Q
What do the throttles control?
A
MAP
9
Q
What do the propeller levers control?
A
RPM
10
Q
What do we do to avoid stress on the engine?
A
MAP should not normally more than RPM x 100
Levers have to be selected in a certain order:
- Prop up before throttle and back before RPM reduction
- Rpm up and throttle back (avoids risk of stress and detonation
