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provides an emergency method of controlling wing
sweep. It bypasses the normal command path of the
fly-by-wire system (CAM: and control drive servo
loop).
To select emergency mode, the handle must be extended
vertically. The guard should be moved out of the
way beforet he handle is operated.V ertical extensiono f
the emergency handle provides for better accessibility
and leverage.T he detent is not disengagedb y raising the
handle vertically. An initial fore or aft force of up to 30
pounds breakout and 13 pounds maximum is necessary
for operation.
ORIGINAL 2-82
NAVAIR 01.FI4AADI
NOMENCLATURE
0
Wing sweep switch
0 Emergency WING
SWEEP handle
@ Wing SWEEP indicator
@
W/S caution legend on
MFD
FUNCTION
AUTO - Wing sweep angles are determined by CADC according to wing
sweep program. Detented switch position.
BOMB - Wings are positioned at 55’ or further aft if commanded by the
CADC program. Detented switch position.
AFT/FWD - The pilot can select AFT or FWD wing positions within limits
imposed by the wing sweep program. Switch is spring-loaded to
the center position. When the forward limit is intercepted, the
mode is transferred to AUTO.
Provides a mechanical means of wing sweep control that overrides the
CADC program commands. Wing sweep SngleS between ZOO and 66O are
mrestricted except for flap interlocks. Oversweep 75’ is provided with
weight-on-wheels, horizontal stabilizer authority restricter in reduced range,
and air bag pressure dumped.
lisplays (from right to left) actual wing sweep position, commanded position
and wing sweep program position, which is the maximum forward angle at
Iresent airspeed and attitudes. Indicator windows show the operating mode.
ndicates failure of both wing sweep channels and/or disengagement of
spider detent. Wing sweep positioning requires using the emergency wing
sweep handle.
Figure 2-46. Wing-Sweep Controls and Indicators (Sheet 1 of 2)
2-83 ORIGINAL
NAVAIR 01.Fl4AAD-1
NOMENCLATURE FUNCTION
0
CADC caution light indicates hardware failure and/or that certain computations of the air data
computer are unreliable. Illumination of WING SWEEP advisory light and/or
W/S caution legend on MFD determines pilot action.
@ ;;G SWEEP advisory Indicates failure of a single channel in the system. Illumination of both
WING SWEEP advisory and CADC caution light indicates failure of one
channel in CADC.
Figure 2-46. Wing-Sweep Controls and Indicators (Sheet 2 of 2)
The spider detent is reengaged if the handle is repositioned
to the detent (servo) position.
The emergency WING SWEEP handle incoipomtes
locks at approximately 4O increments between 20” and
68”. These locks are provided to eliminate random wing
movement in the emergency mode should electrical
system transients be experienced. When the locks are
engaged, wing movement is inhibited provided that
wings match handle position. The wing-sweep locks
eliminate the need for the installation of wing-sweep
servo cutout switches. Locks are engaged by raising the
handle 1 inch from the stowed position. In order to
bypass the locks and select a wing position, the handle
is raised an additional 1 inch (2 inches from stowed) and
moved to the desired position. The handle is spring
loaded to retnrn to the lock position when released. The
handlec an be raisedh orn 20” to 68” and oversweepb, ut
can only be returned to the stowed position at 20” and
oversweep. This feature is intended to prevent inadvertent
engagemenot f the AUTO MODE, commandingt he
wings to spread causing possible damage to the aircraft
or injury to personnel in a confined area. The handle is
spring loaded toward the stowed position, but requires
depressing the release button on the inboard side of the
lever in order to return the handle to the stowed position.
a Except for wing flap (main and auxiliary)
and oversweep interlocks in the control
box, the emergency mode does not prevent
pilot mispositioning the wings from
a structural standpoint.
a If operating in the emergency wing-sweep
mode, positively confirm all flaps are retracted
prior to attempting AFT wing
sweep.
ORIGINAL :
In certain failure modes, the flap indicator
may not accurately reflect the position of all
flaps.
Since the wing-sweep program acts as a forward
liter only for the normal modes of operation, the pilot
must follow the following schedule in the emergency
mode:
1. 0.4 Mach - 20’
2. 0.7Mach - 25’
　
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本文鏈接地址：F-14D 飛行手冊 Flight Manual 1(104)