-1 Flashcards
What are the Major functions of FMU (Fuel Management Unit)
1 Measures fuel quantity
2 Monitors fuel burn
3 Manages fuel system health and isolate component faults
4 Monitors ground/aerial refueling, defueling, and fuel dump
5 communicate system status to GRDP and integrated avionics system
6 communicate fuel quantity to the SFD
7 communicate low engine/gearbox oil levels to the GRDP and maint flight summary
What is FFR?
Feather Flapping Rotor Load Indicator
What assembly provides a circuit path for electrical power to the blade fold systems, blade tip lights, flapping transducers, mast torque sensors, and ice protection distributor
Slipping assembly
What three weights are attached to the yoke used to absorb rotor vibrations
Pendulum Damper Assembly
What Driveshaft connects the PRGB and TAGB through the ICDS?
Pylon Driveshaft
What does the ICDS (Interconnecting Drive Shaft) do?
Synchronizes the proprotor system
How does the FFR work?
Detects the elastomeric bearing temperature to determine if the rotor load is damaging the rotor
What drives VFG 3?
LTAGB
What drives VFG 4
MWGB
What is the primary power for the FCCs?
PMGs
What does ext power power up?
AC buses 1/2, ENV buses 1/2 and the CVs will power the dc buses…
What does ext power not power up?
AC Ice Protection System
In flight, 80% charge provides ____ min emerg pwr for ess equip
20
What does the ENV bus power?
De-ice boots Air cond OBOGS OBIGGS AVI Cooling
What does Nacelle IPS do?
Prevent ice from
Rotors Spinners Pend dampers Air inlets Windshields Pitot tubes AOA sensor Ice prot sensors
What is level one Vortex Ring State?
Increase vibration levels, sluggishness
How do you correct level 1 VRS?
TCL to stop descent or trim NAC fwd @ max rate for 2 seconds (15°) fly out
What is level 2 VRS?
Rumbling/ increased sink rate
Improper roll response
How do you correct level 2 VRS?
NAC fwd @ max rate for 2 secs (15°)
What is level 3 VRS?
Rapid Uncommanded roll corresponding large pitch
How does the Air Data System work?
Air goes through the pitot/static tube to the 3 Air Data Units to get readings for the SFI and FCCs while the FCCs send data to the MCs
What MGT do you abort engine start?
779°
When does the battery time out?
After 5 minutes
What are the 4 major components of the engines?
Torque meter Assembly
Gas Generator Assembly
Power Turbine Assembly
Accessory Drive Assembly
How many fuel nozzles are on each engine?
16
How many debris sensors are there and where are they?
15 1 in ea eng 3 in ea PRGB 2 in ea TAGB 1 in MWGB 1 in SDC 1 in APU
What’s in the Accessory Drive Assembly?
FPMU
HYD Eng Starter
PMA
Oil pump/regu assembly
What is FADEC A connected to?
FCC 1/2
What is FADEC B connected to?
2/3 and 1/3
What is Emergency Shutdown?
ECL — OFF (aff eng) T- Handle — ARM Rotor Brake - ON APU - STOP(as req) Battery - OFF Egress - (as req)
When does the FADECS initiate a engine shutdown?
ECL aft of start NG/NP over speed No light off detection on ENG start Stagnated start or flameout detection Failure to relight on flameout detection Failure of 2nd FADEC and NG speed <53%Ng MGT >779C during a start
When is Interim power armed or on?
ARMED — Above 60KCAS or below 70 NAC
ON — Below 55KCAS and above 70 NAC
What is EAPs powered by?
HYD 3
When is EAPs on or off in AUTO mode?
ON —below 60kts
OFF — above 70kts
What is utilities does HYD 3 power?
Cargo ramp/door Rotor brake EAPs Wheel brakes Cargo Winch RPU Engine starter Wing stow/locking pin Landing gear Aerial refueling retracting probe Nose wheel steering
When does ICDS pwr on?
84% NR
Where are the boost pumps?
2 sponsons
2 wing aux
Where are the suction lift pumps?
Feed tanks
What kind of fuel system is on the CV-22?
Crashworthy
Fully automatic
Suction-type system
What are the support couplings between the DS in each wing monitored by?
VSLED (Vibration, Structural Life , And Engine Diagnostics)
How do you pull the jettison windows?
Look away visor down and pull at 45°
What gearbox oil pressure is normal while AEO? (All Engines Operative)?
60-95 PSI
What is the gearboxes normal oil pressure OEI (One Engine Inoperative)?
60-95 Normal
60-50 Low Caution
What is normal oil pressure for MWGB?
40-65 psi
What is high oil temps for gearboxes with OEI (One Engine Inoperative)?
High W above 121°C
High C 110-121°
What high oil temps for gearboxes while AEO (All Engines Operating)?
High W above 132° C
High C 110 - 132° C
What is normal, low and high engine oil pressure?
Above 90 psi high W
35-60 psi normal
Below 30 psi low W
What is normal low and high engine oil temperature?
Above 140° C High W
40 - 135°C normal
Below 20°C Low W
What is APLN Normal load factor symmetric and asymmetric?
- .5 to 4.0g symmetric
- .5 to 3.2g asymmetric
What is Max airspeed in turbulence?
220 KCAS
What minimum feed tank quantity?
300 lbs
What is max forward sponson allowable fuel split?
2,500 lbs
What is VTOL MHGW?
52,600 lbs
What is CONV/APLN MHGW and MAGW (Max Alternate Gross Weight)?
57,000 MHGW
60,500 MAGW
What’s on the ESS batt bus?
APU ECU Emerg Gear Ground Emerg 02 ENG/Fire Detect & Suppress FCC 2/3 BU pwr L/R FMU
What’s on ENV 1?
L/R Suction Lift Pumps
AOA Heater
What’s on AC 1 Bus?
FLIR
GPS
IBR
MC1
What’s on AC 2 BUS?
EMERG LUBE
MC2
MMR
What’s on ENV 2 BUS?
L/R Feed boost pump
L/R Sponson boost pump
L/R Wing Aux boost pump
L/R avionics bay intake fan
What does eng bleed air provide anti ice for?
Engine intake struts and EAPS
What does IPS provide anti ice protection for?
Prop rotor blade leading edges Spinners Pendulum Dampers Eng air struts Windshield Pitot static probes AOA Sensors
