Q7 Propellers Flashcards
The angular difference between the Plane of Rotation and the [ ] is the Blade Angle. The Angle of Attack is between the [ ] [ ] and the [ ].
The angular difference between the Plane of Rotation and the [Chord Line] is the Blade Angle. The Angle of Attack is between the [Relative] [Airflow] and the [Chord Line].
In normal use when the throttle is not being moved a Variable Pitch Propeller is designed to maintain;
a.RPM
b.Blade Angle
c.Inflow
d.Pitch
a.RPM
When setting the Power of a Variable Pitch system, firstly RPM is set. What other engine indication ensures you have maximum power for take off?
Multiple answers are possible.
a.EGT
b.LOAD or Torque
c.MAP
d.PITCH
b.LOAD or Torque
c.MAP
When you push the throttle forward both the Blade Angle and Angle of Attack Increase.
Select one:
True
False
True
With a variable pitch propeller, when you initiate a climb without touching the engine controls, TAS will decrease, this will cause the Blade angle and AoA to reduce.
Select one:
True
False
False
What is an appropriate engine indication for measuring power, particularly with turboprop engines?
a.EGT
b.Fuel Flow
c.Torque
d.N2
c.Torque
The component in a single acting propeller on a Twin which
ensures the propeller stays at fine pitch on shut down is
a.Speeder Spring
b.Centrifugal Latch
c.Governor
d.CSU
b.Centrifugal Latch
In a Single acting propeller, oil pressure is used to move the piston in the PCU one way, what moves it in the other direction?
a.The Spring
b.The Landed Valve
c.The Flyweights
d.The Centrifugal Latch
a.The Spring
At high power during takeoff if the engine failed the CSU would fine off the propeller to try and maintain RPM.
This would cause an instant amount of negative torque and drag.
What system prevents this?
a.The PCU
b.The Governor
c.The Beta System
d.Auto Feather
d.Auto Feather
Which of the following would be essential to unfeather a propeller.
a.A Double Acting Propeller
b.An Electric Pump
c.A Mechanical Pump
d.A Single Acting Propeller
b.An Electric Pump
