AW 109 LUHS Flashcards
Which systems is the CHS composed of?
AFCS
CDS
FMS
What is the CMS composed of?
CMU
GCP 1-4
The CMU is sending information to the IFF, V/UHF and the sonobouys. What is the name/certificaition of the “cable”
Mil 1553
What happens when the Bat Master switch is set to “BAT EPU”?
Bat tie is closed so the EPU can charge the battery
Which are the relays in the DC Relay box?
K1,K2
BTC 1+2
GLC 1+2
External power
Which warnings are inhibited on ground?
BAT DISCH
ELECTRONICS
ENG OUT ?
How is the BTC magnetically retained?
Magnetically retained to the ON position
How do you check the voltage of the battery? What do you need to do?
BAT MASTER –> ON
GEN BUS (BTC) –> On (at least one)
(since the gen bus is supplying the main bus bar, which is where the voltage is measured)
What is the maximum continuous load of the generator?
100% = 200 amp
(transient 150% = 300 amp)
Which load is shown during assisted start?
0%
(but in reality it´s a negative value)
Where is the API (Actuator position indicator) normally getting its information? How do you select the other source?
FCM 2
Press and hold “APD” to see FCM 1
Which component is measuring the current?
The SHUNT
What happens if you select “MAG” on the AHRS control panel?
The internal gyros are slaved to the respective MSU
Which exterior lights can be dimmed?
Only in IR-mode;
Landing and searchlight (using brt/dim switch)
Anti-collision light and formation lights (using rotary knob)
What does the emergency erase delete?
Pilot data base
Tactical data base
Preset frequencies
Which systems are connected to the three GPS antennas?
AIS, CMU, NavM
What does the IETP stand for? Who is producing it?
Interactive electronic technical publication.
Produced/published by the manufacturer
Which are the reference lines?
Station lines - STA
Water lines - WL
Butt lines - BL
Which AP modes are available in simplex?
All modes but only uncoupled (showing magenta crossbars)
How many axes and channels does the AP have?
4 axises, 2 channels
How do you engage the FLY UP mode?
By pressing the GA-button.
(Fly up is a degraded GA mode when RA and vertical speed indications are missing)
What is the FMA? Where is it located?
Flight mode annunciator, located on the PFD screen. Shows modes in regard to the collective, roll and pitch axis + “in-command”
How is the ELT powered?
with 6 batteries, not rechargeable
What kind of power is the Ice Detector using?
DC and AC power. Has its “own” inverter for AC
What is storing the EPAC tests and how many?
The VMMs and they are storing the last five
What two cautions can be shown on ground after a flight?
Maintenance (at least one failure)
Exceedance (at least one exceedance)
What are the CVR/FDR inputs?
- 4 audio (pilot, co-pilot, operator, cockpit microphone)
- Displays
What are the conditions to stop record CVR/FDR?
Stops after 10 min in case of;
- After a crash (G-sensors)
- Both engines of, weight on wheels
How big is the memory of the CVR/FDR?
2 hours of voice, 25 hours of flight data
Where are the aural warnings and their backup stored ?
CMU (all of them)
GCP 2 (the first 6 as backup)
GCP 1 (the other 9 as backup)
When does the horn sound?
Rotor low
Which are the interior cockpit lights?
Utility lights
Background light
How are the background cockpit lights powered and from where?
5v DC
3 power supplies located in front of the co-pilots feets
How many cabin lights are there and how to you control them?
4 lights
Activated in cockpit with switch (on/off/green)
separate PB to each lamp
Which are the lights in the bagage compartment?
2x floodlights
automatically activated when the door is opened. Also triggers a caution.
How many positionlights are there?
x2
How do you control the exterior lights?
With the control panel on the interseat
(EXT LT Control Panel)
When do you get an advisory connected to the exterior lights?
When you are using Visible / Covert mode and all “associated” lights aren´t activated. There is a missmatch
What does the emergency pb on the cyclic do?
Exits covert mode and turns on all visible lights regardless of the switches position.
What is the purpose of the ADC?
- To execute computations
- to convert signals to electronic signals (ex. pitot pressure)
(only sends standard pressure to the screens)
How many cautions are there for the AHRS?
x2 per AHRS
- AHRS Fail
- AHRS Fan Fail
How is the IFF receiving pressure data?
ADC –> Display –> NavM –> CMU –> IFF
What freq. band is the AIS using?
VHF
Which freq. band is used to communicate with the sonobouy?
- VHF from bouy to heli
- UHF from heli to bouy
- KU (data link) from heli to ship
Which are the sections in the RFM?
- Limitations
- Normal Procedures
- Emergency and malfunction procedures
- Performance Data
- Optional Equipment
- Weight and balance
- Systems description
- Handling, servicing and maintenance
- Supplemental performance information
Which equipment is located on the upper shelf in the rear avionic bay?
ADF, VMM1, VMM2, NavM, CMU, DMG, V/UHF2, IFF, Flash pattern control box, AIS
Which equipment is located on the lower shelf in the rear avionic bay?
+ the side to the right
V/UHF1, MDR, AHRS1, RA, AHRS2, Nav1, Nav2,
+ FLIR, Audio resistor box
What is located in the forward avionic bay (nose)?
FCM1, FCM2, SX-16 Junction box, 3x DF, WXR T/R, Battery, DME, Slaving unit, Glide slope antenna, (Obs. sys 75 ohm terminals support)
What is located on the wall to the left in the rear avionic bay?
Hoist control box, ECU1+2, Fuel drain valve, FCU, Bat disch detector, GCU1, GCU2, Emer bus cb, Hoist RCCB, Emer bus 1+2 relay, DC relay box
How many fans are there to cool the systems of the heli, where are they located and how do you know if someone is inoperative?
Nose = x1 fan
Baggage = 4x fans
Switches on the overhead consol to start the fans
if one or more are failed, caution is displayed;
- REAR AVNX FAN
- FWD AVNX FAN
From where can you get “Fresh” air?
Nose air conveyor (which is connected to the windshield and instrument panel (crew lower)
Has a fan that triggers an advisory when active
- VENT ON
There are two shut of valves connected to the heating system (ECS). To which position are they energized?
Energized to the ON position
What is the maximum OAT for operating the heater?
+21 degrees
When is the shut-off valves automatically closed?
Engine out, engine fire
NG below 50%
When SHALL the heating system be turned of?
During take-off, landing, single engine operations and when max power is needed
What is the indication when the heater or ECS is on?
An advisory
- HEATER ON
- ECS ON
How does the ECS reduce temperature? (cool the air)
With x3 exchangers and x1 turbine (adiabatic expansion)
What is the Fire Detection system composed of? What indications can you get?
Sensing element with HELIUM inside. Responders sensing the pressure.
Low pressure = failure/leakage (caution “FIRE DET”)
High pressure = fire (warning “ENG FIRE”)
Is there a handheld fire extinguisher?
Yes, in the cockpit on the pilot side
How many bottles of do you have to extinguish a fire? How do you select which one to use?
- x2 bottles, cross- connected.
- S/OFF FIRE pb to select which engine to extinguish.
- BTL switch to select which bottle to use
What are the different fuel tanks, and which can you add? How many capacitive probes does they have?
Left = 2 capacitive probes (the rear has a low level sensor)
Right = capacitive probes (the rear has a low level sensor)
Aft = 1 capacitive probe
2x Auxiliary tank = 1 probe/tank
Ferry tank = 0
How does the cross-feed system work?
Cross-feed valve. Can be set to off/on/auto. Auto opens in case of booster pump failure.
With cross-feed valve open, system 1/2 is supplying both engines with fuel. Fuel CANNOT be transfered between tanks.
How can fuel be transfered from the right forward part to the right aft part of the fuel tank?
With the Ejector pump or by the flapper valve
What are the limitations for the gear pump in the fuel system?
- If A/F filter is pre clogged, the gear pump is not able to open the by pass valve
- max 30 degree bank
- no neg pitch angle
What is the maximum possible amount of fuel probes?
7st
What is the main difference between Hydr. sys 1 and 2?
Sys 1 supplies the tail rotor servo actuators
Sys 2 supplies the utility system
What are the main parts of the hydr. sys?
- reservoir
- pump
- filter group assembly
- accumulator
- actuator
- pressure transmittor
What is the main task of the hyd. pumps? How do they work?
- Constant pressure
- Changing flow rate
When can the main/emergency accumulators be charged?
Main = on ground and in flight
Emergency = only on ground (WOW switch)
Which reservoir is bigger and what happens if it is less than 1,6L in the bigger one?
nr 2 is twice as big.
Charging will stop in order to supply the 3 main servo actuators.
What are the cautions available regarding the hyd. sys 2?
MAIN UTIL PRESS - (pressure below 55 bar)
EMERG UTIL PRESS - (pressure below 95 bar)
EMERG UTIL CHRG - (the accumulator is beeing charged (not a failure))
When the pressure from the main/emerg accumulator is discharged, what pressure will be indicated?
35 bar, since this is the pre-charged value (on the “other side” of the accumulator)
Why has the emerg. accumulator often a higher pressure than the main accumulator?
The emerg. acc. has a time delay switch which gives it about 30s more of “charging time”.
What does the different colors on the landing gear control panel mean?
red = transition
green = down and locked
black/no light = up and locked
What does the caution “LANDING GEAR” mean?
not a failure
its a reminder to take down the landing gear since you are slow and close to the ground (see table and AWG switch)
What is the design of the helicopter and what are the components of that design?
Semi-monocoque design
- frames
- strings
- longerons
- skin (absorbs the least force. Mostly for aerodynamics)
What is connecting the overhead consol with the longitudional box beam?
Support frames
How is the tailboom attached to the pod?
With 4 bolts
- 4x (Bolt, barrel not (why not?), retainer, plug)
What does the K1/K” relay do?
- Maintaining DC Gen caution during start
- Showing 0% load during start
- Removes limits on GCU during assisted start
What is the indication in case the hyd. oil filter gets pre-clogged?
Pop-out indicator
Which equipment can you only operate when the landing gear is in the down position?
- parking break
- rotor break
- left/right pedal break
What does the auxiliary hyd. pump supply?
charge to the main accumulator
What is the name of the landing gear locking system?
Finger lock
What is the design of the tail fin?
Assymetrical
If the locking mechanism is failing, is it possible to keep the landing gear in the up position?
Yes, as long as there is hyd. pressure.
PFrom which door do you get “CABIN DOOR OPEN”?
pilot
co-pilot
sliding doors
only one caution for all/one door
What is the typ of windshield for the pilot/co-pilot?
Polycarbonate
What material are the windows made out of?
acrylic / Plastic
How many RPM are 100% NR
384 rpm
What is the characteristics of the main rotor blades?
They have a droop snoot airfoil section
Leading edge = asymmetrical
Rest of the blade = symmetrical
They are able to produce lift with 0 degrees AoA
Which are the main parts of the Main transmission system?
- Coupling gearbox
- Reduction gearbox
- Mast and bell housing
Is the oil cooling fan driven in an autorotation?
No, since the free-wheeling unit is located between the belt and the transmission
How is the main gearbox installed?
2x tubes to the front
2x struts to the back
What are the main gearbox indications?
- 2x CHIP DET.
- RPM sensor
- oil temp switch + transmitter (filter assembly)
- oil press switch + transmitter (coupling gearbox)
What is the purpose of the chinese weights and where are they located?
Mounted on the tail rotor assembly in order to reduce AoA in case of loss of control
What is the purpose of the torque shaft lever?
change the direction of the control input
What is the purpose of the tail rotor 90 degree gear box?
Reduce speed
change of direction
Which indications can you get in regard to the tail gear box?
only chip detection
How many rotary trim actuators (parallel) are there and where are they located?
x4 - one per axis
located close to the control “source”, some under the co-pilot.
How many linear actuators are there?
x6
2x pitch, 2x roll, 2x yaw
What is the purpose of the LVDT?
Linear variable differential trasducer
- Sends position of the collective to the ECU for the “FADEC” calculations
What is the purpose of the microswitch in the trim actuator?
To de-energize the motor in case of “fly through” in order not to damage the motor
What is the mixing unit composed of and which inputs are beeing mixed?
- Mixing unit support
- walking beam
- mixing star
Pitch, roll, collective
How many force trim release switches are there for the yaw axis?
x4
one is enough to release the magnetic clutch
Can the main rotor servo actuator be operated of one system is failed?
yes
What is the purpose of the follow up link?
To re-center the position of the servo valves
What type of actuator is the main rotor servo actuator?
Tandem type actuator
What is the backup to the tail rotor servo actuator?
Mechanical backup only
Which are the parts controlling the swashplate?
Outer ring (connected with the rotorhead)
Inner ring (connected with the actuators)
Bullbearings in between
Where is the engine oil tank?
inside the mast and bell housing
How many coils have the NR speed sensor?
x3
ECU1
ECU2
VMMs (1+2)
How are the hyd. pump sys 1+2 driven?
Via the reduction gearbox
What are safetypins?
Thats the backup in case of de-bonding. The safety pins needs to be free-moving to be approved
Can you fix the controls in any way?
Yes, using the friction knob close to the pilot side (collective + cyclic)
To what is the starter/generator connected?
To the accessory drive train and later the n1
What is T4,5?
ITT, temperature between N1 and N2
Where are the governer switches located?
on the pilot collective control (x2)
Which input has priority in automatic governer mode?
The ECU has priority over the pilot
What is the purpose of the ECU?
to keep NR constant
What is the difference in power when using the OEI training mode?
Maximum continuous power is in reality -2% than what is showing.
122% rather than 124%
What does the S/OFF VALVE caution mean?
Failure of the valve. You need to manually shut down the engine in case of overspeed
What EAPS indication do you have?
EAPS ON (advisory)
EAPS PRESS (caution)
Both are dependent of the pressure from the shut-off valve
What happens if you are on ground with one engine in idle and pull more than 20% collective?
Warning “IDLE”
What is the PMA?
Permanent Magnet Alternator
Supplies ECU with power above 50% NG. Battery (EPU or GEN) supplies ECU before that
When do you get the warning “OIL PRESS”?
ONLY when the eng oil pressure is TOO LOW
What does the caution “ITT LIMITER” mean?
The ECU cannot maintain the ITT within its limits
What happens if you have 101% TRQ for 1 sec in AEO?
Immediately XMSN OVTRQ
(“Exceedence” starts recording after 5 sec of overlimit)
What values can you see on the Power Index?
The values closest to their limit.
ITT, TRQ, NG
