TM 1-1500-204-23-5
c. Deicing. An electrical propeller icing control
system, as shown in figure 2-13, consists basically of an
electrical energy source, a resistance heating element,
system controls, and necessary wiring. The heating
elements are mounted internally or externally on the
propeller spinner and blades. Electrical power from the
aircraft system is transferred to the propeller hub
through electrical leads which terminate in slip rings and
brushes. Flexible connectors are used to transfer power
from the hub to the blade elements. Ice removal is
accomplished by converting electrical energy to heat
energy in the heating element.
2-16. Propeller Preservation and Storage. Metal
Propellers. Preservation and storage of propeller hub
and dome assembly and blades is described in the
following paragraphs.
Figure 2-11. Propeller RPM Adjusting Screw
Figure 2-12. Typical Anti-Icing System
2-19
