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Bombardier Challenger 350 > Flight Controls > Flashcards

Flight Controls Flashcards

1
Q

Pertaining to the ailerons, when disconnected by the roll disconnect mechanism, who controls what?

A

Pilot controls the roll spoilers. The Co-pilot controls both ailerons

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2
Q

A roll damper is mounted on which side of the control column?

A

The pilot side

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3
Q

What controls the extension/retraction of the multifunction spoilers?

A

A spoiler electronic control unit (SECU 1 and SECU 2). A single power control unit is used on each spoiler.

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4
Q

The vertical stabilizer is powered hydraulically by …

A

Two hydraulic power control units (PCU’s)

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5
Q

What supplies a simulated pedal load to the fight crew?

A

Rudder-control feel unit

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6
Q

Where do the cables for the rudder separate to minimize the possibility of being severed?

A

Engine rotor burst zone

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7
Q

What provides gust lock damping for the rudder when on the ground?

A

Trapped hydraulic fluid
The PCU’s

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8
Q

On the rudder, which PCU controls what?

A

Left hydraulic controls the upper PCU
Right hydraulic controls the lower PCU

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9
Q

Is there a backup to the PCU’s if one should fail?

A

The auxiliary hydraulic system powers the lower PCU should the right hydraulic system lose pressure

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10
Q

The rudder travel limiter actuator limits movement of the rudder control surface as a function of …

A

Airspeed

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11
Q

During takeoff the yaw damping function is disabled when?

A

Above 60 knots until weight is off the wheels

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12
Q

What powers the elevators?

A

Two PCU’s hydraulically power each of the two elevators. Four total.

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13
Q

The aileron trim tab (one only) is located where?

A

Left aileron

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14
Q

What moves the horizontal stabilizer?

A

Two electric trim motors drive a jack screw the positions the stabilizer

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15
Q

What prevents trim runaway?

A

Each of the two trim motors has a brake

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16
Q

The horizontal trim control unit receives inputs from where? (4)

A
  • Control wheel trim switches
  • Autopilot
  • Flaps
  • Air data computers
17
Q

With the switch in PRI, trim rate is a function of …

A

Airspeed

18
Q

With the switch in SEC, trim rate is …

A

A constant .2 degrees per second

19
Q

Which way does the aircraft automatically compensate when the flaps or spoilers are extended?

A

With flap extension, the aircraft has a nose-down pitching moment
With spoiler extension, the aircraft has a nose-up pitching moment

20
Q

Mach trim uses information from _____ to command movement of the horizontal stabilizer?

A

Air data computers

21
Q

The _____ hydraulic system normally operates the flaps?

A

Right

22
Q

The left hydraulic system can operate the flaps when?

A

ALTN FLAPS button on hydraulic panel is pressed

23
Q

With ALTN FLAP selected or if the right DC motor-driven pump supplies hydraulic pressure for flap movement, what occurs?

A

Flap movement extends up to 60-70 seconds while lowering flaps from 0 to 20 in flight

24
Q

Each panel of the spoiler system is actuated by …

A

A single PCU

25
Q

The ground spoilers provide …

A

Ground lift dumping functions

26
Q

The multifunction spoilers provide … (3)

A
  • Roll assist
  • proportional lift dumping in flight
  • ground dumping functions
27
Q

The spoilers are controlled by …

A

Two Spoiler Electronic Control Units (SECU 1 and SECU 2)

28
Q

The max position of the FLIGHT SPOILERS lever corresponds to …

A

Full deployment of the outboard panel on each wing

29
Q

The EMER position of the FLIGHT SPOILERS lever corresponds to …

A

Full deployment of the outboard and inboard Multi-Function Spoilers panels on each wing

30
Q

Inputs to the roll assist system (Roll spoilers) are through which control wheel?

A

Pilot side only

31
Q

The ROLL SPOILERS OFF switch is utilized when … ?

A

A jam is detected in the pilot control wheel and the switch is selected to disable the roll assist function

Bombardier Challenger 350 (14 decks)

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