BOMBARDIER Challenger 601-3A CL-600-2B16 Pilot Training Manual page 397

YAW CONTROL SYSTEM
General
Yaw control is maintained with a hydrauli-
cally powered rudder, mechanically controlled
by either set of rudder pedals. Rudder travel
is limited by PCU travel and mechanical stops
on the rudder pedals. Load feel is provided by
two artificial feel units.
Loss of any two hydraulic systems powering
the rudder PCU's will not degrade yaw con-
trol authority.
PUSHROD INPUT
A
B
JAMMED CONDITION
NOTES:
IN OPERATION, THE COMMAND INPUT IS TO A CONNECTING BELLCRANK WHICH IS AFFIXED TO THE
CABLE PULLY AT POINT A AND TO THE CONNECTING ROD TO THE BREAKOUT BUNGEE AT POINT B.
IN A NO-JAM STATE, THE BELLCRANK PIVOTS AT POINT B, CAUSING ROTATION OF THE PULLY
THROUGH THE ATTACHING POINT A.
SHOULD A CABLE JAM OCCUR, POINT A BECOMES THE PIVOT POINT AND THE BELLCRANK IS
ALLOWED TO ROTATE AGAINST THE BUNGEE SPRING FORCE.
CL-600-2B16 PILOT TRAINING MANUAL
A
B
Figure 15-8. Jam Breakout Mechanism
FOR TRAINING PURPOSES ONLY
FlightSafety Canada
The rudder control system consists of dual con-
trol linkages. Movement of either set of rudder
pedals actuates both sets of linkages to position
control valves on all three rudder PCU's.
Jamming in either set of rudder control me-
chanical linkages is overcome by a breakout
mechanism in each linkage. If either linkage
jams, additional rudder pedal force actuated
from the jammed or non-jammed side will
cause the breakout mechanism to adjust the
bell crank pivot point on the jammed side.
This allows full rudder control input through
the side that is not jammed. The breakout sys-
tem is shown in Figure 15-7 and the breakout
mechanism in Figure 15-8.
BUNGEE
NO-JAM CONDITION
L t ée
L t d .
CL 601-3A/R 15-7