Robinson 22 POH Section 7: Systems

Question 1

Describe the R22 (3 things)

Answer 1

1) Two place
2) Single main rotor
3) Single engine helicopter

Question 2

Describe the tailcone

Answer 2

A monocoque riveted aluminum sheet design, with the skin carrying the primary loads.

Question 3

What is the rotor made of?

Answer 3

It is all metal

Question 4

The coning and teeter hinges use ______-_____________ bearings.

Answer 4

self-lubricating

Question 5

What is the purpose of the droop stops?

Answer 5

Provide friction to the teeter hinge, preventing the rotor from teetering while starting and stopping

Question 6

What happens if the bond line is exposed?

Answer 6

It may be damaged

Question 7

The rotor housing is filled with _____ and sealed with an _______________ boot

Answer 7

oil, elastomeric

Question 8

What is the spar made of?

Answer 8

Stainless steel

Question 9

The tail rotor has two ___-_____ blades and a _________ hub with a fixed _______ angle.

Answer 9

all-metal, teetering hub, coning

Question 10

What type of drive system does the R22 have?

Answer 10

vee-belt

Question 11

Describe the transmission of power in the R22

Answer 11

Engine => Lower sheave => vee-belt power transfer => upper sheave => sprag clutch => power transfer through flex couplings main rotor (forward), tail rotor (rear)

Question 12

How are the main rotor and tail rotor gear boxes lubricated?

Answer 12

Splash-lubricated

Question 13

Describe the engine in the R22 (7 items)

Answer 13

1) Lycoming
2) Four cylinder
3) Horizontally opposed
4) Over-head-valve
5) Air cooled
6) Carbureted
7) Wet sump

Question 14

What other components are associated with the engine? (7 items)

Answer 14

1) Starter
2) Alternator
3) Shielded ignition
4) Two magnetos
5) Muffler
6) Oil cooler
7) Induction air filter

Question 15

Describe the cooling system on the R22? (2 items)

Answer 15

1) Direct drive
2) Squirrel-cage fan

Question 16

Above 4,000 feet, what systems are less effective? How would you operate the helicopter in these conditions?

Answer 16

Correlator and governor. Power changes should be slow and smooth

Question 17

At _____ power settings above ______ feet, the throttle is frequently wide open and the RPM must be controlled with _____________

Answer 17

High, 4000, collective

Question 18

How does the governor maintain engine RPM

Answer 18

By sensing and applying corrective throttle inputs through a friction clutch with can be easily overridden by the pilot.

Question 19

The governor is only active above ______ engine RPM

Answer 19

80%

Question 20

In the R22 what helps balance control loads in the rotor

Answer 20

Trim springs

Question 21

The engine throttle is also correlated to collective inputs through a ____________ ____________

Answer 21

mechanical linkage

Question 22

In flight leaning is _____ ____________

Answer 22

not recommended

Question 23

What does the clutch actuator do?

Answer 23

It raises the upper sheave when the pilot engages the clutch switch

Question 24

What makes the clutch actuator stop?

Answer 24

It senses compressive load and switches off when the belts are properly tensioned

Question 25

Blades should start turning how quickly after clutch engagement?

Answer 25

Within 5 seconds

Question 26

Describe the fuel system and its components

Answer 26

It is gravity flow, and has a main tank and an auxiliary tank, shutoff valve, strainer.

Question 27

8042B Does not have what in the fuel tanks

Answer 27

Bladders, 5 minute, 1 gallon, when the low fuel light comes on

Question 28

Fuel samples should be taken from what three places?

Answer 28

Gascolator, main tank, aux tank

Question 29

Low fuel light is actuated by a __________ ________ _______ located on the bottom of the main tank.

Answer 29

separate electric sender

Question 30

The fuel shutoff valve controls flow from _______ tanks to the engine

Answer 30

both

Question 31

Describe the flow of fuel through the fuel system.

Answer 31

Aux tank => Main tank => mixture control => carburetor => gascolator => primer => fuel nozzles

Question 32

Describe the electrical system on the R22

Answer 32

14-volt, DC system which includes an alternator and a sealer lead-acid battery.

Question 33

The battery switch controls what?

Answer 33

It controls a relay which disconnects the battery from the electrical system.

Question 34

A wire protected by a fuse near the battery does what?

Answer 34

It by passes the battery relay allowing both tachometers and the clock to continue to receive battery power with the battery switch off.

Question 35

Except in emergencies don't operate the ____________ with the battery switched off

Answer 35

alternator

Question 36

What does the ALT light indicate? What do you do if it comes on?

Answer 36

Indicates low voltage and possible alternator failure. Turn off nonessential electrical equipment Switch alternator off then back on to try and reset If alternator light stays on, turn alternator off and land as soon as possible.

Question 37

In any electrical system, what are the 5 main things that you have?

Answer 37

1) Source 2) Storage 3) Wires 4) Protection 5) Users

Question 38

Describe the lights on the R22

Answer 38

- Red anti collision light on the tailcone (controlled by the strobe switch) - Position lights, red (left), green (right), white tail (controlled by the nav lights switch - Two landing lights (controlled by the landing lights switch)

Question 39

Landing lights operate only when what is acuated?

Answer 39

The clutch is in the engage position.

Question 40

How is the rotor tachometer signal provided?

Answer 40

Two magnetic senders at the main gearbox drive yoke.

Question 41

Each tach is on a separate what? Why is this

Answer 41

circuit, for redundancy

Question 42

When the battery and alternator switches are off, how do the tachs continue to receive power?

Answer 42

A bypass circuit connected directly to the battery.

Question 43

How do the chip indicators work?

Answer 43

When metal particles are drawn to the magnets they close an electrical circuit, illuminating the caution light.

Question 44

Where is the carbon monoxide sensor located?

Answer 44

Above the pilot's heater outlet

Question 45

In case of a fire, what should you do with cabin heat?

Answer 45

Turn the cabin heat off

Question 46

If the tail is sitting within what distance from the ground, does the crosstube require replacement?

Answer 46

34 inches

Question 47

If the CO light comes on, what should you do? (4 things)

Answer 47

Shutoff heater Open nose and door vents If hovering, transition to forward flight If you start to get symptoms, land immediately