R44

Question 1

Main Rotor RPM

Answer 1

408rpm

Question 2

Powerplant Description

Answer 2

8.8l Lycoming
6 cylinder, horizontally opposed
Air cooled, normally aspirated

Question 3

Max Power

Answer 3

225bhp

Question 4

Continuous Power

Answer 4

205bhp

Question 5

Max fuel + breakdown

Answer 5

Main - 115L
Aux - 65L

Total - 180 Litres

Question 6

Unusable fuel

Answer 6

4 L

Main - 3 l
Aux - 1 l

Question 7

Approved Fuel

Answer 7

AVGAS
100, 100LL, 100VLL, 91UL, 94UL

Question 8

List the 5 systems that must be functional for flight (R44)

Answer 8

Alternator
RPM governor
Low rotor RPM horn
OAT gauge
Hydraulic control system

Question 9

Speed limitations with door off (R44)

Answer 9

Any combination

100kts

Question 10

Max gross weight
(R44)

Answer 10

1089kg

Question 11

Min gross weight
(R44)

Answer 11

703kg

Question 12

Max flight envelope
(R44)

Answer 12

DA - 14,000ft
or
9000ft AGL to allow landing within 5min in case of fire

Question 13

Airspeed Limitations
(R44)

Answer 13

998kg below - 130kts
998kg above - 120kts
Autorotation - 100kts

Question 14

Rotor speed limits
Power On
(R44)

Answer 14

Max - 408rpm
Min - 404rpm

Question 15

Rotor speed limits
Power Off
(R44)

Answer 15

Max - 432rpm
Min - 360rpm

Question 16

High and Low Rotor Horn

Answer 16

High - 108%
Low - 97%

Question 17

Max Engine Speed
(R44)

Answer 17

2718 rpm

Question 18

Max CHT
(R44)

Answer 18

260 °C

Question 19

Max Oil Temp
(R44)

Answer 19

118 °C

Question 20

Max Oil Pressure during flight
(R44)

Answer 20

95psi

Question 21

Max Oil Pressure during start & warm up
(R44)

Answer 21

115psi

Question 22

Min Oil Pressure during flight
(R44)

Answer 22

55psi

Question 23

Min Oil Pressure during idle
(R44)

Answer 23

25psi

Question 24

Oil sump capacity
(R44)

Answer 24

8.5 L
9 Quart

Question 25

Min Oil for takeoff
(R44)

Answer 25

6.6 L
7 Quart

Question 26

System Description
Engine
(R44)

Answer 26

8.8L, 6 cylinder, direct drive horizontally opposed
Air cooled carburettor engine
Wet sump oil system
Dual plug magneto ignition

Question 27

System Description
Air Induction
(R44)

Answer 27

In through right side cowling and into carburettor air box
Secondary duct taking heated air from exhaust scoop
Sliding valve controlled by carburettor heat control adjust the mix then flows through a filter and into the carburettor.

Question 28

System Description
Cooling System
(R44)

Answer 28

Direct drive squirrel fan mounted to engine output supplies cooling air.
Air gets ousted around cylinder and oil cooler via fiberglass and aluminum shroud.

Question 29

System Description
Hydraulic System
(R44)

Answer 29

Hydraulically boosted main flight controls
Pump, 3 servos, a reservoir, and lines
Operated at 450-500psi
Pump mounted on and driven by main gearbox
Sight gauge on ride side cowling door
System left on during flight - switch on pilot’s cyclic

Question 30

System Description
Fuel System
(R44)

Answer 30

Gravity Feed
Bladder style
Gascolator in each tank
Fuel gauges are electrically operated by float type transmitter
Aux tank higher than main so will empty first

Question 31

System Description
Electrical System
(R44)

Answer 31

14 volt lead acid battery
Alternator
Newer models may have 28 volt electrical system with batter under front left seat

Question 32

System Description
Clutch Actuator
(R44)

Answer 32

Clutch coupled to rotor drive by vee-belts, which are tensioned by raising upper drive sheave.
Sensor switches load of belts and switches off once properly tensioned.
Blades to being rotating within 5 seconds of clutch engagement.

Question 33

System Description
Engine Primer System
(R44)

Answer 33

Lower right cowling
Unlock handle and pump 2-3 strokes slowly
Push handle down and lock after priming