17.5 Propeller Ice Protection Flashcards
1
Q
Two types of ice protection?
A
Fluid anti ice
Electrical de-ice
2
Q
Where do we use fluid anti icing?
A
Only used on piston engines
3
Q
Disadvantages of fluid anti icing?
A
Weight of fluid
Fluid level will always need to be monitored and topped up
Only works if ice is not yet present
4
Q
On an electrical de icing system, the heat loosens the ice and what throws it away?
A
Centrifugal force
5
Q
What is a fast electrical anti icing cycle?
A
2 minutes for full cycle
From 10 degrees down to minus 6
6
Q
What is a slow electrical cycle?
A
6 minutes for full cycle
Used below minus 6 degrees
7
Q
What types of system tests are done for electrical de icing systems?
A
Continuity and resistance checks on heating elements
Functional
Inspections
