MOD 5-6

Question 1

flight controls on the helicopter ?

Answer 1

Cyclic
collective
anti torque pedals

Question 2

hydraulic systems provide ?

Answer 2

control boost and eliminate feedback from rotor system

Question 3

hydraulic accumulators function?

Answer 3

provide a limit number of controls movements in the event of failure, charge with nitrogen needs to be tested regurlaly

Question 4

dual hydraulic systems function ?

Answer 4

dual servo is one part with 2 separate pistons, parallel independent systems

Question 5

swashplates assemblies

Answer 5

friction adjustment and torque range

Question 6

flight and engine control rigging musts ?

Answer 6

• controls must move in the correct direction, correct distance and correct authority or amount
• must be secure and safety
• must not have any interaction with other parts

Question 7

Bell flight control rigging Main rotor

Answer 7

• Zero or reference points will be establish by fix points
• hydraulic pilot valves must be properly positioned
• adjustments are made to match a specific point.

Question 8

Robison Flight control rigging tail rotor

Answer 8

• blade angle measurements are made directly on the blade for giving control position
• adjustments are made to match a specific angle

Question 9

types of engine control that all helicopters will have

Answer 9

• proactive

- reactive

Question 10

what means proactive engine control?

Answer 10

anticipating changes in power requirements and making adjustments before they are required

Question 11

what means reactive engine control?

Answer 11

sensing workload and making an adjustments to maintain rotor RPM (Nr)

Question 12

Piston engine control characteristics

Answer 12

• Throttle (control by pilot )
• correlation (senses pilot control inputs -proactive)
• Governor (senses RPM -Reactive )

Question 13

Turbine engine controls characteristics

Answer 13

• Throttle (control by pilot)
• Droop compensator or anticipator(senses pilot flight control input and is proactive)
• Governor (senses N2 RPM -Reactive)

Question 14

in a piston engine the Throttle, correlation and governor are all connected to the ________or fuel injection servo

Answer 14

carburetor

Question 15

on piston engine fuel mixture is left ______during the flight

Answer 15

full rich

Question 16

on a turbine engine throttle is connected to the __________and is used primarily for start up and shut down

Answer 16

fuel control unit

Question 17

in a turbine engine Droop compensator is connected to the _______________and controls the ___________at flight settings

Answer 17

power turbine governor, controls the engine

Question 18

the droop compensator is used to ?

Answer 18

maintain rotor RPM based on flight controls inputs

Question 19

Turbine engine fuel control unit function?

Answer 19

• controls the fuel delivered to the fuel nozzles
• connected to the pilots throttle
• manages engine starts
• provides positive fuel shut off
• senses N1 speed

Question 20

power turbine governor function?

Answer 20

• Connected to the collective via droop compensator
• “tells” the FCU how manage the fuel at operational speeds .
• Senses N2 `

Question 21

what is a beep switch or governor trim?

Answer 21

switch on the collective is connected to a linear actuator in the droop compensator system that will change the position of the control arm on the governor., allowing the pilot make adjustments to the compensator for different ambient pressures.

Question 22

what is autorotation?

Answer 22

The process of turning the rotor from air passing up from below also the maneuver associated with flying and landing without power from

Question 23

In the event of an engine failure the pilot must _______to the down stop. (autorotation)

Answer 23

lower the collective

Question 24

Most helicopters set the Auto-revs by adjusting the length of the pitch links. All pitch links must be adjusted. Each pitch link must be adjusted exactly the same amount. so if the RPM is to slow ___________and if the RPM is to fast you need to _________

Answer 24

• shorten all the pitch links

- lengthen all the pitch links.

Question 25

one full turn in the coarse threated clevis will give us ______Nr change.

Answer 25

3%

Question 26

hydraulics filters in flight controls have a bypass system ?

Answer 26

no, has a clough indicator (pop out), because if the hydraulic is contaminated can cause un-commandment movements on the hydraulic servos

Question 27

on the hydraulic system when the bypass solenoid is energize it will ?

Answer 27

reroute fluid from pump system back to the reservoir bypassing the flight controls, so you need electrical power to disable hydraulic systems