Mis.

Question 1

FUEL SYSTEM consists of

Answer 1

consists of two interchangeable crashworthy tanks, self sealing fuel lines, firewall mounted selector valves, prime boots pump and fuel tanks, engine drive pumps, quantity gauging and low level warning system

Question 2

Fuel travel path

Answer 2

Pumps
Fuel Filter
HMU
Liquid to Liquid cooler
ODV
Nozzels

Question 3

How much fuel is unusable

Answer 3

360 lbs gravity

359 pressure

356 closed circuit

Question 4

fueling psi limits

Answer 4

gravity - none
pressure 300 gpm, 55 psi
closed circuit 110 gpm, 15 psi

Question 5

when does fuel low come on

Answer 5

172 lbs of fuel

Question 6

What does the LDI do

Answer 6

negative pressure

pump or lines

fuel boost can isolate leak or make it worse

Question 7

MMU - collective to pitch

Answer 7

compensates for rotor downwash

collective increases provides fwd input

aft input if collective decreases

Question 8

MMU - collective to roll

Answer 8

compensates for translating tendency

left lateral input when collective increases

right lateral input when collective decreases

Question 9

MMU - collective to yaw

Answer 9

compensates for changes in torque effect

increases tail pitch as collective increases

decreases tail pitch as collective decreases

Question 10

MMU - Yaw to Pitch

Answer 10

compensates for vertical thrust

aft input as tail rotor pitch increases

fwd input as tail rotor decreases

Question 11

Collective / airspeed to yaw (electronic coupling)

Answer 11

Compensates for torque effect function of SAS/FPS computer

decreases tail pitch as airspeed increases - and opposite

tail rotor pitch change is proportional to airspeed

0-40 maximum mixing

40-100 mixing decreases

100+ no mixing

Question 12

TORQUE COMPENSATION

Answer 12

MMU
Electronic Coupling
Cambered Fin

changes to nominal pitch setting in tail rotor from 7.5 to 10

wind, PA, temp not considered

Question 13

CAMBERED FIN

Answer 13

helps streamline fuselage as airspeed increases

tapers off as airspeed increases

Question 14

AFCS

Answer 14

SAS 1 & 2, TRIM, FPS, Stabilator

provides oscillation dampening (dynamic)
maintains desired attitude, speed, and handling (static)

Question 15

SAS

Answer 15

enhances dynamic stability by providing short term rate damping in the pitch

SAS 1 - analog
SAS 2 - digital

Both have 5% control if one fails remaining sas will double its gain and the control authority of SAS is reduced by one half

Question 16

TRIM

Answer 16

maintain position of cyclic and tail rotor.

requires boost to be on

Question 17

FPS - Flight Path Stabilization

Answer 17

FPS enhances static stability - long term rate damping

will not function without TRIM

Basic Auto Pilot Functions
<60 kts
Attitude hold - pitch, roll / hdg hold - yaw

> 60 kts
airspeed & attitude hold - pitch
attitude hold - roll
heading hold / turn coordination - yaw

Question 18

Stabilator manual slew

Answer 18

is possible with battery only

Question 19

Pneumatic system

Answer 19

bleed air furnished by the main engines, the APU, or an external pneumatic power source

drives the starter, heating system operation, external extended range tank fuel transfer

anti ice on - lose 18% torque

heater on lose 4%

Question 20

Powertrain system - input module

Answer 20

freewheeling unit allows engine disengagement during autorotation, accessory module will continue to be driven by main rotor

Question 21

Powertrain system - accessory module

Answer 21

electrical generator, and hydraulic pump

rotor speed sensor mounted on the right accessory module

Question 22

Powertrain system - main module

Answer 22

provides reduction in speed for the input module

Question 23

Intermediate gear box

Answer 23

mounted on tail pylon, can run 30 minutes at cruise with loss of all oil

Question 24

tail gear box

Answer 24

may run at cruise flight for 30 minutes with loss of all oil

Question 25

Main Rotor system

Answer 25

fully articulated, main rotor blades, hub, flight controls, and bifilar vibration absorbers

elastomeric bearing permits flap, lead, and lag

damper supplied with pressurized hydraulic fluid

BIM - nitrogen filled blades, red bad

Question 26

tail rotor system

Answer 26

canted 20 degrees upward, provides 2.5 % of lift at hover

Question 27

What if APU generator is sole source of ac power

Answer 27

backup pump and windshield anti ice cannot be used simultaneously

Question 28

emergency power is provided by the

Answer 28

APU generator

can also supply blade deice if one main generator fails

if second fails blade deice load will drop

Question 29

Primary source of power is DC or AC

Answer 29

Alternating Current

Question 30

When only battery power is available the battery life is

Answer 30

38 minutes day, 24 minutes night for 80% battery