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CL-65 Study Guide > Flight Controls > Flashcards

Flashcards in Flight Controls Deck (52):
1

How are control surfaces actuated?

Hydraulically or electrically

2

Primary flight controls:

elevator
rudder
ailerons

3

Which controls are equipped with control disconnects?

elevator & ailerons

4

Which control has an anti-jam mechanism?

rudder

5

In the event of total electrical failure, which hydraulic pump is powered by the ADG?

3B

6

What unit moves the ailerons?

PCU's

7

Are ailerons & MFS's operated by the opposite yoke?

Yes

8

How many PCU's per aileron?

2

9

SSCU's

Spoiler Stabilizer Control Units

10

What are the flutter dampers for in flight?

Prevent aileron flutter when all hydraulic fluid is lost to the PCU

11

What are the flutter dampers for on the ground?

Gust lock function

12

Does pulling the ROLL DISC allow all ailerons & MFS's to be available to one yoke control?

Yes

13

Selecting the ROLL SEL switch button on the glareshield allows the flying pilot to have control over the other:

spoileron

14

If the bungee breakout switch is actuated, what control is now available to the flying pilot?
Should the ROLL DISC handle still be pulled?

MFS's
Yes

15

What provides rudder gust lock?

Trapped hydraulic fluid

16

How many yaw damper systems?

2

17

Is the yaw damper independent of the autopilot system?

Yes

18

FCC's

Flight Control Computers

19

If both yaw dampers fail, does the autopilot disengage?

Yes

20

CA operates the ___ elevator:
FO operates the ___ elevator:

Left
Right

21

What happens if the PITCH DISC handle is pulled?

Reduced pitch control (1 elevator only)

22

Secondary Flight Controls:

slats
flaps
MFS's
GLD devices
aileron, rudder, horizontal stabilizer trim

23

How are the slats/flaps & trim actuated?

electrically

24

How are the flight/ground spoilers actuated?

hydraulically

25

Will changing aileron trim deflect the controls?

Yes

26

Will changing rudder trim deflect the controls?

No

27

Horizontal Stabilizer Trim AOI range?

+2 / -13 degrees

28

Where are the PITCH TRIM DISC switches located?

On each pilot's control wheel

29

AFCS

Autopilot Flight Control System

30

SFECU

Slat/Flap Electronic Control Unit

31

How many slats?
How many flaps?

3 per wing
2 per wing

32

Which yoke connected to left aileron?
Right aileron?

Captain
FO

33

How are ailerons, elevators, & rudder actuated?

Yoke & pedals operate system of cables/pulleys that connect to push/pull rods at the flight control which operate a hydraulic PCU (power control unit) that hydraulically actuates control surfaces

34

What is purpose of MFS's?

To assist with roll control & serve as a spoiler in flight/on landing

35

What is the flight deck indication of a jammed aileron cable?

Both yokes will be jammed

36

What happens after the ROLL DISC handle is pulled?

Aileron cable/pulley systems disconnected through torque tubes.
20 seconds later, if operable side has not been selected amber ROL SEL switchlight illuminates.

37

How is operable side selected?

Pushing the ROL SEL/PLT ROL switchlight on the unjammed side

38

What does pushing the ROL SEL/PLT ROL switchlight accomplish?

Allows pilot with operable aileron to control opposite side MFS's

39

What is the flight deck indication of an aileron PCU runaway?

Aircraft begins uncommanded roll & PLT SEL switchlight on side w/o PCU runaway illuminates automatically because of the bungee break-out signal

40

What is occurring when pilots trim ailerons or rudder?

Control surface being repositioned. There are no trim tabs

41

What panels are part of the GND LIFT dumping system?

Inboard & outboard ground spoilers, all 4 MFS's

42

How are flight controls gust locked?

Hydraulic fluid trapped during shutdown

43

How is Yaw Damper engaged?

YD1 & YD2 engage switchlights on the center pedestal

44

How is Yaw Damper disengaged?

DISC button on center pedestal

45

What controls yaw damper?

FCC

46

Is it necessary to disconnect yaw damper on landing?

No

47

How are flaps operated?

Electrically

48

How many flap segments does CRJ have?

4, 2 on each wing

49

Is there any asymmetrical protection within the flaps?

Yes, if flap segments differ by >5 degrees, brakes applied & flaps remain at current position

50

How is STAB TRIM operated?

Electrically.
Split switch on control yoke operates 2 motors & jackscrew changing horizontal stabilizer AOI

51

What systems can operate STAB TRIM?

CA trim switch
FO trim switch
Autopilot
MACK trim

52

What is priority of STAB TRIM control?

CA
FO
Autopilot
MACH trim