17**** Flashcards
Where are the brushes fitted?
Engine
What is the Noddle point?
The greatest vibration area
80% of blade length
For aerodynamic balancing, where is the correcting factor usually marked?
On the blade root
Where is the blade angle measured from?
Master reference point
Angle of attack increases if what?
RPM speed increases and speed is constant
Where is damage not allowed?
Blade root
What is the max speed of a fixed propeller?
250km/h
How does a propeller governor with a constant speed unit maintain constant speed?
Porting oil from the engine or propeller under pressure through a pilot valve incase of an under speed and overspeed
What is a spinner made from?
Aluminium and glass fibre
Bolts are re torqued after how long and checked in what intervals after?
Re torque after 25 hours
Bolts check every 50 hours
Prior to engine shut down, what needs to be exercised to circulate oil?
Variable pitch propeller
What fluid is used for anti icing?
Iso-propyl
For single acting propellers for single engine aircraft, what moves blades in the director of high (coarse) pitch?
Oil pressure
At what time period should uninstalled, assembled propeller bearings be visually inspected for brinelling?
Every 12 months check for brinelling on bearings
What is the angle between rotational plane of propeller and the relative airflow?
Angle of advance or helix angle
