General POH/CH1

Question 0

What model engine do we have?

Answer 0

Lycoming O-360-J2A

Question 1

Classification of rotary system?

Answer 1

1) rigid
2) semi rigid
3) fully articulated

Question 2

How many horse power does the engine have?

Answer 2

145BHP

Question 3

Articulation of main rotor system in R22?

Answer 3

Rigid in plane, free to teeter and cone

Question 4

Number of blades?

Answer 4

Two ( a semi rigid rotor system posses 2 main rotor blades)

Question 5

Diameter of the main rotor

Answer 5

25 feet 2 inches

Question 6

Blade chord

Answer 6

7.2 inches (constant)

Question 7

Blade twist

Answer 7

-8°

Question 8

Tip speed @ 100%RPM?

Answer 8

672 FPS

Question 9

Articulation of the tail rotor?

Answer 9

Rigid inplane, free to teether

Question 10

Number of blades

Answer 10

2

Question 11

Blade chord of the tail rotor?

Answer 11

4 inches

Question 12

Blade twist

Answer 12

0°

Question 13

Precone angle

Answer 13

1° 11 minutes

Question 14

Tip speed of the tail rotor @ 100 RPM

Answer 14

599 FPS

Question 15

Drive system- engine to upper sheave

Answer 15

Two double eve belts with .8536:1 speed reducing ratio

Question 16

Upper sheave

Answer 16

Spag type overrunning clutch

Question 17

Drive line to main rotor

Answer 17

Spiral bevel gears with 11:47 speed reducing ratio

Question 18

Drive line to tail rotor

Answer 18

Spiral-bevel gears with 3:2 speed increasing ratio

Question 19

What is the power plant of R22

Answer 19

Model: Lycoming O-360-J2A

Type: four cylinder, horizontally opposed, direct drive, air cooled, carbureted, normally aspirated.

Displacement: 361.0cubic inches

Normal rating: 145BHP (derated) @2700 RPM(R22 Beta II)

Approved fuel grade: 100/130 grade aviation fuel
Total fuel tank capacity 28-30.7 gal useable fuel 26.3-29.7 gal

Question 20

KIAS

Answer 20

Knots indicated airspeed is speed shown on the airspeed indicator.

Question 21

KCAS

Answer 21

Knots calibrated airspeed, is speed shown on the airspeed indicator corrected for instrument and position error.

Question 22

KTAS

Answer 22

Knots true airspeed, is airspeed relative to ur disturbed air. It is KCAS corrected for pressure altitude and temperature.

Question 23

Vne

Answer 23

Never exceed airspeed

Question 24

Vy

Answer 24

Speed for best rate of climb

Question 25

MSL altitude

Answer 25

Altitude above sea level, in feet, indicated by the altimeter (corrected for position and instrument error) when the barometric sub scale is set to the atmospheric pressure existing at sea level.

Question 26

Pressure altitude

Answer 26

Altitude in feet indicated by the altimeter(corrected for position and instrument error) when the barometric sub scale is set 29.92 inches of mercury(1013.2 mb)

Question 27

Density altitude

Answer 27

Altitude in feet, in ISA conditions at which the air would have the same density(it is pressure altitude corrected for OAT).

Question 28

ISA

Answer 28

International standard atmosphere exist when pressure is 29.92 inches of mercury at sea level, temperature is 15°C at sea level, and temperature decreases 1.98°C per 1000ft of altitude

Question 29

BHP

Answer 29

Brake horsepower is actual output of the engine.

Question 30

MAP

Answer 30

Manifold pressure in absolute pressure, in inches of mercury, in the engine intake manifold.

Question 31

RPM

Answer 31

Revolution per minutiae or speed of engine or main rotor.(shown by tachometer as percentage of 2550 engine RPM or 510 main rotor RPM)

Question 32

MCP

Answer 32

Maximum continuous power

Question 33

TOP

Answer 33

Take off power(usually for a maximum of 5mins)

Question 34

Critical altitude

Answer 34

Altitude at which full throttle produces maximum allowable power(MCP or TOP)

Question 35

TOGW

Answer 35

Takeoff gross weight

Question 36

OAT

Answer 36

Outside air temperature

Question 37

CAT

Answer 37

Carburetor air temperature

Question 38

CHT

Answer 38

Cylinder head temperature

Question 39

GPH

Answer 39

Gallons per hour

Question 40

AGL

Answer 40

Above ground level

Question 41

IGE

Answer 41

In ground effect

Question 42

OGE

Answer 42

Out of ground effect

Question 43

ALT

Answer 43

Alternator