Shared Flashcard Set

Details

CL605 Flight Controls
Revision 23 (updated 7-27-12)
34
Aviation
Professional
03/16/2012

Additional Aviation Flashcards

 


 

Cards

Term
How many PCUs are on each aileron and what powers them?
Definition
2 PCUs on each
Left uses 1 & 3
Right uses 2 & 3
Term
How can a jammed PCU be overcome on each flight control system?
Definition
Ailerons: pilot override, shear rivets off PCU
Elevatior: jam-tolerant input rods allow other side to move if both PCUs fail
Ruder: anti-jam breakout mechanism
Term
What is the priority and degree of travel for each horizontal trim system?
Definition

Pilot/Copilot manual trim: 5°/sec

Autopilot trim: 1°/sec (flap transition: .5°/sec) Mach trim: .03-.06°/sec

Term
How does the HSTCU control stab trim?
Definition
It commands 2 electric motors to drive a jackscrew 0 to -9°
Term
When is the stab trim runaway warning activated?
Definition
When the stab trim moves .3°/sec for 3 seconds
Term
How many PCUs are on each elevator and what powers them?
Definition
2 PCUs on each
Left uses 1 & 3
Right uses 2 & 3
Term
How many PCUs are on the rudder and what powers them?
Definition
3 PCUs, uses 1,2 & 3
Term
What is the purpose of Mach Trim?
Definition
It compensates for the rearward shift of the aerodynamic center of pressure as mach number increases
Term
What are the requirements needed for Mach Trim to engage?
Definition

At least one stab trim engaged

Hand flying at speeds > .4 Mach

No pilot stab trim inputs

Term
What are the mechanical differences between aileron and rudder trim?
Definition
Aileron: PCUs are signaled to deflect the ailerons, control wheel moves
Rudder: applied by trim actuator into the yaw damper/trim mixer assembly, pedals do not move
Term
How many PCUs are on each spoiler and what powers them?
Definition
2 PCUs on each, uses 1
Term
How many degrees is full deployment of the spoilers?
Definition
40 degrees
Term
"FLT SPLR DEPLOY" caution
Definition
Spoilers are deployed and RA is 10-300' or N1 on either engine < 79%
RA inop - any time the landing gear is extended
Term
Describe the 20% Detent Mechanism.
Definition
Prevents asymmetrical deployment of the spoilers
Term
"FLT SPOILERS" caution
Definition
Ground: failed detent mechanism, loss of 1 or 2 hyd pressure
Flight: loss of 1 or 2 hyd pressure
Term
How many degrees is full deployment of the ground spoilers?
Definition
45 degrees
Term
How many PCUs are on each ground spoiler and what powers them?
Definition
1 PCU, uses 1
Term
What controls deployment and retraction of the ground spoilers? What inputs does it use?
Definition
PSEU - proximity sensor electronic unit
Monitors inputs from ground spoilers, flight spoilers, throttle lever position, and anti-skid control unit
Term
What powers the PSEU?
Definition
DC BUS 1 & 2
Term
When are the ground spoilers automatically armed?
Definition
switch in AUTO
thrust > min takeoff setting
wheel speed > 16 kts
Term
When are the ground spoilers manually armed?
Definition
switch in AUTO
spoiler lever > 1/4 detent --or switch in ARM
Term
When are the ground spoilers automatically deployed?
Definition
switch in ARM or AUTO
thrust at idle
WOW or wheel speed > 16 kts
Term
When are the ground spoilers automatically retracted?
Definition
Thrust > idle --or thrust < min takeoff setting
wheel speed < 16 kts
aircraft is on the ground > 3 seconds
Term
When are the ground spoilers manually retracted?
Definition
Switch in disarm --or spoiler lever < 1/4 detent (if in AUTO and spoilers were extended manually)
Term
What do the colored arcs on the SPS gauge represent?
Definition
Blue - continuous ignition
Yellow - stick shaker and autopilot disconnect
Red - pusher, "STALL" icon, master warning, warbler
Term
How is the stick pusher disconnected?
Definition
Stall Prot Pusher switch "OFF"
stick pusher disconnect is held
G-switch activation (0.5G)
AOA decreases
Term
"ALT COMP FAIL" caution
Definition
Left or right altitude compensation circuit of the SPC has failed
Term
"GND SPLRS DEPLOY" caution
Definition
Spoilers are not stowed and RA > 10'
Term
"STALL FAIL" caution
Definition
One or both SPS channels has failed
Stick pusher inop
Term
"FLAPS MOTOR OVHT" status
Definition
One flap motor overheated (half speed, starts again when cooled)
Term
"FLAPS FAIL" caution
Definition
Both flap motors have overheated or failed
Term
What is the purpose of the aileron and elevator flutter dampers?
Definition
Prevent flutter when hydraulic power is lost to the PCUs
Term
How are the flap motors powered? Are flaps available on emergency power?
Definition
Motor 1 - AC ESS BUS
MOTOR 2 - AC BUS 2
1/2 speed on emergency power
Term
Under which conditions will the ground spoilers deploy?
Definition
Landing or rejected takeoff
Spoilers must be armed
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