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with the flaps to form a slot to optimixe airflow
over the deflected flap. The cove doors are secondary
surfaces along the underside of the wing forward of the
flap (Figure 2-50.) As the flaps pass 25’ deflection, a
negative command received from the AFCS depresses
the spoilers to 41/2O to meet with the cove doors. Be
cause the spoilers do not span the entire wing as do the
flaps, gusses inboard and outboard of the spoilers perform
the flaps-down function of the spoilers. With the
flaps retmcted, the eyebrow doora, which are the forward
upper surface of the Saps, are spring loaded in the
up position to close the gap between the trailing edge of
the spoiler or guss and the leading edge of the flaps.
Mechanical linkage retracts the eyebrow door when the
flaps are lowered to provide a smooth contour over the
upper surface of the deflected flap.
2.21 .1.4 Auxlllary Flaps. The auxiliary flaps are inboard
of the main flaps and are powered by the combined
hydraulic system. The actuator is design& to
mechanically lock the auxiliary flaps when in the up
position. In the event of high dynamic pressure conditions,
a bypass valve within each control valve opens
ORIGINAL 2-08
NAVAIR Ql-F14AABI
NOMENCLATURE
3
FLAP handle
1
,..MW._- L.F.A1.E -O. R..G i RDC SPD 8
,.......... . . . . . . . . . J
\
FUNCTION
UP - Normal retraction of main and auxiliary flaps.
DN- Normal efienslon of main and auxiliary flaps.
EMER UP - Emergency retraction of main flaps to full up overrldlng any
electromechanical command faults.
EMER DN -No function.
Figure 2-49. Flap and Slat Controls and Indicators (Sheet 1 of 2)
2-89 ORIGINAL
MAVAIR O-I-Fl4AAD-l
FUNCTION
- Power off; maneuver slats extended.
- Slats extended (17 ). Slats position is an electrical
pickoff of right slat position only
- Slats retracted (0”).
czl ? - Flaps full up (0”).
i
Flap position is pickoff from
hydraulic motor for main flaps only
0
$7 - Maneuver flaps down (10”).
III
0,”/ - Flaps full down (35”).
3
RDC SPD legend on Main flap comparator failures with flaps not retracted and airspeed
MFD and HUD >225 KIAS (see figure 2-43).
Maximum safe Mach exceeded (2.4 M).
Total temperature exceeds 355°F
3
FLAP caution light Disagreement between main and/or AUX flap position (10 second
light) or asymmetry lockout (3 second light).
CADC failure. WG SWP DR NO. 2/MANUV FLAP (LEl) circuit breaker
pulled.
3
Maneuver flap and slat Forward - Commands maneuver flaps and slats to retract.
thumbwheel
Neutral - Automatic CADC program.
An - Commands maneuver flaps and slats to extend.
ORIGINAL
Figure 2-49. Flap and Slat Controls and Indicators (Sheet 2 of 2)
2-90
NAVAIR Ol-F14AAD-1
Figure Z-50. Wing Control Surfaces
2-91 ORIGINAL
NAVAIR 01.FMAAD-1
causing the auxiliary flap to be blown back, thus avoiding
possible structural damage. During loss of electrical
power, the control valve is spring loaded to retract, retracting
the auxiliary flaps within 1 minute. The auxiliary
flaps use cove doors, eyebrow doors, and gusses
identical in purpose and operation with those associated
with the main flaps.
2.21.1.5 Slats. The slats on each wing are divided
into two sections, both of which are driven simuhaneously
by a single-slatd riveshat?.T he slats ares upported
and guided by seven curved tracks.
2.21.2 Flap and Slat Operation
Note
l There is no automatic flap/slat retraction.
e With flaps extended by the FLAP handle
and an airspeed of 225 knots or greater,
the RDC SPD legend appearso n the MFD
and HUD.
2.21.2.1 Normal Operation. The main flap and slat
portion of the high-lit? system is positioned with a dual
redundant hydromechanical servoloop in response to
the FLAP handle command. The auxiliary flap is a twoposition
control surface powered by the combined hydraulic
system. With the FLAP handle exceeding 5’
deflection, the auxiliary flaps fully extend. Conversely,
they retract for a FLAP handle position equal to or less
than 5“. ‘Ihe torque of the flap and slat drive hydraulic
motor is transmitted by flexible driveshafts to each
wing.
2.21.2.2 Degraded Operation. In the event of a
combined hydraulic system failure, outboard spoiler
module fluid is automatically directed to a backup hydraulic
motor to lower main flaps and slats only. In the
event of main flap asymmetty greater than 3”. slat asymmetry
greater than 4O, or flap surface overtravel, the flap
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F-14D 飞行手册 Flight Manual 1(107)
