Aviation Mechanic - General, Airframe, and Powerplant › III. Powerplant › Task M. Propellers

AM.III.M.K10

Knowledge

Propeller ice control systems.

Study note

Get a short, cited explanation of this element written from the FAA handbooks: the core idea, the numbers that matter, common test traps, and a quick self-check.

From the FAA library

Aviation Maintenance Technician Handbook - Powerplant p. 7-17
Chapter 7: Propellers › Ice Control Systems › Anti-Icing Systems
Propeller Auxiliary Systems Ice Control Systems Ice formation on a propeller blade, in effect, produces a distorted blade airfoil section that causes a loss in propeller efficiency. Generally, ice collects asymmetrically on a propeller blade and produces propeller unbalance ... fluid system includes a tank to hold a supply of anti-icing fluid. [Figure 7-27] This fluid is forced to each propeller by a pump. The control system permits variation in the pumping rate so that the quantity…
Aviation Maintenance Technician Handbook - Powerplant p. 7-19
Chapter 7: Propellers › Ice Control Systems › Deicing Systems
water will run back over the unheated surface and freeze. Runback of this nature causes ice formation on uncontrolled icing areas of the blade or surface. Cycling timers are used to energize the heating element circuits for periods ... minutes. A cycling timer is an electric motor driven contactor that controls power contactors in separate sections of the circuit. Controls for propeller electrical deicing systems include on-off switches, ammeters or loadmeters to indicate current in the circuits…