4K-8 Developed for Training Purposes Leerjet 35/36
February 1998
CAE SimuFlite
If the fuel computer fails and reverts to manual mode, ultimate
overspeed protection is regained by setting the cockpit control
switch to FUEL CMPTR and the switch on the fuel computer to
MANUAL.
The opening of the surge bleed valve is controlled by the fuel
computer to minimize the possibility of engine stall and surge.
With a failed fuel computer or when in Manual mode, the surge
valve stays in the 1/3 open position.
Engine Controls
The throttle levers are connected directly to the fuel control unit
by flexible cable. When the throttle is moved from CUTOFF to
IDLE, it mechanically opens the rotary shutoff valve in the fuel
control unit. The engine is also shut down in the same manner
by moving the throttle lever from IDLE to CUTOFF. With the
fuel computer failed or in manual mode, movement of the throt-
tle lever directly controls engine thrust through the fuel control
unit. With the fuel computer operating normally, movement of
the throttle lever indirectly controls engine thrust through the
fuel computer.
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