FLCS

Question 1

the FLCS uses a ____-redundant computer system which hydraulically positions the control surfaces by the ___

Answer 1

quad-redundant

ISA (integrated servoactuator)

Question 2

the Flaperons include the ___ and ____

Answer 2

Ailerons and Trailing Edge Flaps (TEFs)

Question 3

the Rudder has an ____ and a _____ at high AOA

Answer 3

Aileron-rudder-interconnect (ARI)

yaw rate limiter

Question 4

Relaxed Static Stability means the ____ is forward of the ____ making the aircraft unstable in subsonic flight and requires the ___ to provide lift to help counteract

Answer 4

L(CL) is forward of the CG and needs Lift from the tail to counteract

Question 5

Tansonic - the ___ shifts aft of the _____

Answer 5

L(CL) shifts aft of the CG

Question 6

the FLCS wires are routed _____ to increase combat survivability

Answer 6

separately

Question 7

the _______ allows you to communicate with the FLCS and provides consistent response at any airspeed and altitude

Answer 7

Command Augmentation system

Question 8

the ____ provides feedback and automatic correction to make the F-16 smooth and stable

Answer 8

stability augmentation system

Question 9

Gain-adjusted ____ commands help minimize roll-yaw coupling, enhance spin resistance, and improve turn coordination ; the 4 gain schedules are:_____ and are based on configuration and flight regime

Answer 9

ARI (Aileron Rudder Interconnect)
4 schedules (STBY, Cruise, TO/LDG, and Ground)

Question 10

Ground gains commands control surface deflection commanded in _____ and enables the flight control ground system check and requires

Answer 10

inches ; WOW

Question 11

TO/LDG Gains requires ______ and is AOA biased above ____ AOA and limits roll rate to a max of _____

Answer 11

require Weight off wheels, LG down, ALT FLAPS extended, and/or AIR REFUEL switch open
AOA biased >10 degrees AOA
roll rate limit - 167/S (324/S gear up)

Question 12

Cruise Gains require_____ and has two sub-gains categories (CATI and CATIII). CAT I makes it a __-command system that reduces G until only 1 g is available and 25* AOA when AOA >____

Answer 12

requires LG handle up, ALT FLAPS in NORM, AIR REFUEL switch in CLOSE
G-command system
CAT I biased when AOA>15*

Question 13

Stby Gains when ______ and is based on ____ KCAS when LG handle is Up and ____ KCAS when LG handle is down

Answer 13

Dual air Data Failure
600 KCAS gear up
230 KAS gear down

Question 14

Rudder moves ___ left and right

Answer 14

30 degrees

Question 15

Secondary flight controls consist of the

Answer 15

LEFs (controlled by combo of Mach, Altitude, and AOA) and optomizes airfoil aerodynamic optimization
TEFs (20* down until 240 kts gear down ; gear up - fully retracted at 370 kts)
speed brakes (system A hydraulics)

Question 16

LEFs are ___-span control surfaces hinged to the wings and are controlled by the ____ that sends commands to the _______ that provides near-optimum wing camber

Answer 16

full-span
controlled by ADC (air data converter)
commands sent to LEF PDU (power drive unit)

Question 17

LEFs fixed to 2* up when:

Answer 17

throttle in idle and MLG speed >60kts
WOW on both MLG
Supersonic

Question 18

LEFs fixed at 0* when:

and 15* down when:

Answer 18

0*:LG handle up, ALT FLAPS in NORM

15*: LG handle down, ALT FLAPS EXTEND

Question 19

LEF PDU (power drive unit) is located in ____ center fuselage and receives signals from the ____ then hydraulically drives the ______ through torque shafts then on to the LEF actuators

Answer 19

upper center fuselage
signals from the ADC
drives the Angle Gearbox

Question 20

LEF asymmetry detected then the Asymmetry brakes stop the LEFs and commands the ____ to stop ; if a complete disconnect happens then the PDU should _______

Answer 20

PDU stops

PDU should limit asymmetry to <11*

Question 21

Air data system includes the and their functions

Answer 21

source components (collect raq data from Air pressure, temperature, and AOA)
ADC (converts data to signal for FLCC and control LEFs automatically)
CADC (central air data computer) converts data to signal for Aircraft avionics

Question 22

the total temperature probe that provides a signal to the CADC for true airspeed and air density is located on the ________

Answer 22

right strake above the engine inlet nacelle

Question 23

there are ___ AOA Probes on each side of the _____

Answer 23

2 probes on either side of the radome

Question 24

two air data probes that supply static and total air pressure info are located ____ and _____

Answer 24

nose mounted probe (pitot boom) and fuselage mounted probe neat the AOA Probe (AOA and sideslip)

Question 25

air pressure electronic flow:

Answer 25

Pneumatic data --> PSA (pneumatic sensor assembly) --> electronic control assembly (ECA) --> FLCC --> LEFs

Question 26

primary function of the CADC

Answer 26

Central Air Data Computer: receives/processes electrical signals for flight instruments and avionics, detects internal failures

Question 27

3 packages of __ gyros sends __ redundant signals to the FLCC and provide the truest sense of Aircraft movement

Answer 27

4 gyros -- 4 redundant signals

Question 28

8 torque balanced accelerometers provide quad-redundant signals to the FLCC for _____

Answer 28

G, pitch, and yaw axes

Question 29

the Flight Control Computer located in the _____ is the principal electronic assmbly in the FLCS and has 4 branches that each independently compute signals to the FLCS through the servo-amplifier to ISA based on:

Answer 29

equipment bay based on: Flight contol panel, manual trim panel, MPO swithc, 4 force sensors, 4 rate sensors, 4 accelerometers, 2 AOA probes, ADC, sideslip diff press sensor

Question 30

___ of the 4 FLCS branches are compared in the selector, and ___ is held in stby unless needed because of a bad branch

Answer 30

3 are used, 1 is in stby

Question 31

there are ____ ISAs (integrated servoactuators) that integrate electronics and _______ and each contains 3 servovalves that accepts signals from the FLCC to position the FLCS

Answer 31

4 ISAs (one for each primary control surface) ; electronics and hydraulics

Question 32

System __ is the primary hydraulic source for ISA hydraulics for servos 1 and 2, System __ controls servovalve 3 and is heald in stby

Answer 32

B - primary | A - secondary

Question 33

the _______ is the "out-of-tolerance" hydraulic signals and helps isolate the bad hydraulic system

Answer 33

Hydro-Mechanical Comparator

Question 34

a second failure within the ISA is mechanically centered and hydraulically locked by a _______ and is a "fail safe"

Answer 34

Centering Spring

Question 35

stick force pressure pitch and roll

Answer 35

25 lbs nose up 16 lbs nose down 17 lbs roll cruise gains 12 lbs roll TO/LDG gains

Question 36

simultaneous illumination of PRY on the Flight Control panel indicates______

Answer 36

loss of power to one or more FLCS branches

Question 37

RESET switch to ELEC resets:

Answer 37

P,R,Y, ADC, LE FLAPS, CADC, FLT CONT SYS, and Master Caution lights

Question 38

A servo Light on the Flight Contol Panel indicates a _______ of hydraulics in the FLCS

Answer 38

first failure

Question 39

If servo light does not reset, then you should ______ the ISA to prevent a hardover control surface

Answer 39

Arm the ISA

Question 40

STORES CONFIG Switch CAT I and CAT III

Answer 40

CAT I: symmetrical missiles, centerline or wing tanks, empty pylon/TER combinations, more response, higher G, and roll limits for A-A CAT III: used for most A-S, reduces max G and roll, protects against departures with destabilizing stores

Question 41

Manual Pitch Override switch in OVRD:

Answer 41

overrides AoA/G limiter if above 29*, gives you full horizontal stabilizer control, and bypasses negative G Limiter

Question 42

the PRobe Heat switch turns on automatically when :

Answer 42

weight off NLG

Question 43

DAUL FC Warning light if:

Answer 43

dual electronics failure in one axis dual branch failure dual AOA failure second failure in an armed ISA

Question 44

TO/LDG CONFIG light:

Answer 44

``` All gear not down and locked altitude <10,000' airspeed <190kts Descent >250 fpm TEFs failed to extend with gear ```

Question 45

HYD/OIL PRESS light:

Answer 45

either hydraulic system <1000 psi loss of one system causes ISAs to operate nonredundant total loss of both hydraulics - eject illuminates all five servo lights on FLIGHT CONTROL panel

Question 46

FLCS CONT SYS light:

Answer 46

potential FLCS failure

Question 47

ADC Caution light

Answer 47

single/dual pressure sensing failure | or AOA failure

Question 48

LE FLAPS Caution lights

Answer 48

Dual air data failure Dual AOA failure Flap command servo valve failure LE FLAPS switch in LOCK

Question 49

CADC light

Answer 49

malfunction in CADC | loss of Mach data to engine

Question 50

ACFT BATT TO FLCS

Answer 50

aircraft battery powering one or more FLCS branches with 25 volts or less

Question 51

FLCS BATT branch light:

Answer 51

respective FLCS battery is powering FLCS inverter with 22 volts or less

Question 52

prior to start FLCS TEST in NORM

Answer 52

``` 4 FLCS Power lights FLCS PMG MAIN GEN STBY GEN TO FLCS ```

Question 53

prior to start FLCS TEST in TEST

Answer 53

``` 4 FLCS power lights 4 FLCS Batt lights MAIN GEN STBY GEN NO FLCS PMG (ensures FLCS batteries connected to FLCS) ```