Eaws Powerplants (Phase Iii Block Iii)

Front 1

Danger Zones

Back 1

Suction from engine 1 and 2 intake

Heat from engine 1 and 2 exhaust

Heat from ECS (upper right T section)

Heat from APU (upper left T section)

Main and tail rotor blades

Front 2

T700-GE-401C

Back 2

Front-drive turbo shaft engine

Maximum continuous rating of 1662 SHP (shaft horse power)

Intermediate rating of 1800 SHP (for 30 minutes)

Contingency power rating of 1940 SHP (for 2.5 minutes)

Front 3

5 engine sections

Back 3

Inlet

Compressor

Combustor

Turbine

Exhaust

Front 4

4 module engine sections

Back 4

Accessory section module

Cold section module

Hit section module

Power turbine module

Front 5

Hover infrared suppression system (HIRSS)

Back 5

Reduces gas exhaust radiation and line of sight hot surfaces

Front 6

MRH NR (Speed)

Back 6

35% NR - centrifugal force pulls anti flap outward

70% NR - centrifugal force pulls drool stops out

50% NR - drop stops seat

Front 7

Tail Rotor

Back 7

Canted at 20°

Provides 2.5% of lifting force

Counteracts torque of mrh to provide directional control

Front 8

Fuel cell main tanks

Back 8

Provides 1224 pounds (180 gallons) of fuel storage (each)

Completely ballistic tolerant

- lower third seals rounds up to 14.2 mm

- upper two thirds seals rounds up to 7.62 mm

Front 9

#1 cell

Back 9

Single point fueling/defueling and gravity fueling

Two high level shut-off valves, two check valves

Apu fuel/prime line

Sump drain

Internal fuel boost pump

Vent

Fuel pump line

Front 10

#2 cell

Back 10

Gravity refueling

Two high level shut-off floats

Check valve

Sump drain

Internal fuel boost pump

Vent

Fuel dump line

Front 11

Fueling operation

Back 11

Pre-check valves shall significantly reduce/stop fuel flow to main fuel cells within 5-10 seconds

Indicates high level sensors are working

Front 12

Pressure and gravity fueling

Back 12

Pressure - port on port side of A/C (aft of cabin)

Gravity - #1 fuel cell on starboard, #2 on port

Front 13

Types of fuel

Back 13

JP-5 (F-44) - primary fuel

JP-8 (F-34) - alternate fuel (flashpoint to low for ship)

JP-4 (F-40) - restricted

Front 14

Pneumatic sources for engine start

Back 14

External pneumatic power ground source

APU

Engine cross bleed air

Front 15

Bleed air

Back 15

For inlet anti-icing, ECS operation, and cross bleed engine starting

Front 16

Power train 5 main components

Back 16

Main transmission module

Drive shafts

Oil cooler

IGB

TGB

Front 17

Transmission system primary function

Back 17

Take combined power from two engines, reduce the RPM and transfer it to main rotor and tail rotor

Front 18

Transmission system secondary function

Back 18

To drive accessory modules and utility hydraulic pump

Front 19

Tail drive shaft

Back 19

6 sections with disconnect coupling

Shafts are ballistically tolerant and suspended at 4 points by viscous damper bearings

Front 20

IGB

Back 20

Transmits torque, reduce shaft speed from MGB to the TGB, and changes angle of drive

Front 21

TGB

Back 21

Transmits torque to tail rotor, changes angle of the drive and provides gear reduction

Enables pitch change of tail rotor blades via flight controls

Front 22

Metal chip detectors

Back 22

Installed in each gearbox

Sends signal to cockpit indicating detected chip

Equipped with fuzz burn off (immediately burns off chip)

Front 23

Free wheel unit

Back 23

Allows the main transmission to spin freely of engines if transmission rotates faster than engine input gear (auto rotation)

Front 24

APU

Back 24

Supplies pneumatic power for engine start, provides bleed air to ECS system and limited electrical power for ground operations, in-flight emergencies and back-up pump power

Garret and sunstrand

Front 25

Aux tank

Back 25

Crashworthy, ballistic tolerant

200 gallon (194 usable)