HELICOPTER FLIGHT CONTROLS
T h e h y d r a u l i c a l l y p ow e r e d f l i g h t c o n t r o l
mechanism, shown in figure 17-6, provides you with
LEARNING OBJECTIVE: Identify the
an example of systems common to most helicopters.
three primary flight controls and the basic
These are the systems on which you will most likely be
control systems components.
working. Fairly exact values, such as tolerances,
pressures, and temperatures, are given to provide
Helicopter flight controls differ drastically from
instructive coverage. When actually performing the
those found in fixed-wing aircraft. Helicopter flight
maintenance procedures, consult the current technical
controls consist of both cyclic and collective pitch
publications for the latest information and exact
control systems and the rotary rudder flight control
Figure 17-6.--Flight control systems.