AW139M Multi-Role Helicopter

AW139M is the customised military variant of the AW139 multi-role helicopter manufactured by AgustaWestland, a Finmeccanica company. The AW139M is intended to meet the challenging needs of defence, homeland security and government customers.

The AW139M can be deployed in military and homeland security missions including battlefield support, command and control, maritime patrol, search and rescue (SAR), surveillance, utility or troop transport, medical evacuation (MEDEVAC) and fire support.

In February 2011, AgustaWestland launched the AW139M helicopter equipped with state-of-the-art military equipment for the Common Vertical Lift Support Programme of the US Air Force. The helicopter was demonstrated at the AFA Air Warfare Symposium and Technology Exposition 2011.

2450817Italian Air Force

The HH-139A, a search-and rescue version of AW139M helicopter entered service with the Italian Air Force in March 2012. A total of ten HH-139As are scheduled to be delivered by the end of 2012.

15025638_1833216973565875_2547172461518675467_oRoyal Thai Army

AW139M was used as a technology demonstrator for the US Army Armed Aerial Scout (AAS) flight demonstrations as the AW169 had been undergoing test flights for FAA and EASA certification. AgustaWestland plans to offer its AW169 military variant for the AAS programme.

Design of AW139M

aw139m_02

The AW139M incorporates a damage resistant and fail-safe design. It features the largest passenger cabin in its class. The unobstructed cabin design ensures the troops to easily access the stowage compartment. The large cabin, with a volume of 8m3, can carry up to 15 troops or ten fully equipped infantrymen. The high ground clearance of the main and tail-rotor enhances the safety of troops and crew during entry and exit.

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The modular floor and ceiling allow for rapid installation and removal of mission systems. The extensive space aboard the helicopter can be used to accommodate specific mission and role equipment. The cabin can be converted to accommodate additional operator stations for specific applications such as command and control. The two large sliding doors allow quick troop deployment in battlefield and recovery of stretchers in flight.

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The AW139M has a length of 16.66m, a height of 5.17m and a rotor diameter of 13.8m. The maximum take-off weight of the helicopter is 6,800kg. The helicopter can carry a maximum payload of 3,070kg.

agustawestland-139vip

AW139M cockpit and avionics

1781877_813753625305028_1975433567_nRoyal Thai Army AW-139M – Image: Thai Defense News1921211_813828851964172_416075398_o.jpgRoyal Thai Army AW-139M – Image: Thai Defense News
“The AW139M has a length of 16.66m, a height of 5.17m and a rotor diameter of 13.8m.”

The glass cockpit of AW139M can accommodate up to two crew members. It features five large Liquid Crystal Displays (LCDs) and integrated digital avionics system equipped with 4-axis Digital Automatic Flight Control System (DAFCS). It supports SAR modes and FMS SAR flight patterns.

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The avionics suite integrates Health and Usage Monitoring System (HUMS), Helicopter Operations Monitoring Programme (HOMP), Traffic Alert and Collision Avoidance System (TCAS II), Forward Looking Infrared (FLIR) camera, weather/search radar, Cockpit Voice Recorder & Flight Data Recorder (CVR/FDR), satellite and radio communications, enhanced vision system, and Enhanced Ground Proximity Warning System (EGPWS).

1149437_813619065318484_981201145_oRoyal Thai Army AW-139M – Image: Thai Defense News1614105_813829228630801_1963762193_oRoyal Thai Army AW-139M – Image: Thai Defense News1800164_813831965297194_703031370_oRoyal Thai Army AW-139M – Image: Thai Defense News1920943_813607455319645_1733047553_oRoyal Thai Army AW-139M – Image: Thai Defense News

Armament

The AW139M can be armed with Internal and external weapons such as general purpose machine guns, sniper rifles, heavy machine gun pods and 70mm rocket pods, forward firing rockets and machine guns, pintle mounted machine gun and Air-to-Surface Missile (ASM) system.

7.62 caliber machine guns

lbp_01

The FN Light Door Pintle Weapon System – or FN® LDP – includes the following:

  • a 7.62x51mm FN MAG® 58M machine gun with spade grips
  • a light pintle head – or FN® LPH – including a soft mount
  • a column located between the pintle head and the connection
  • a light door pintle connection (specific to the carrier)
  • a feeding kit including an ammunition box and a feed chute
  • an ejection kit including a links and cases collector and an ejection chute

Source fnherstal.com

Dillion M134 minigun

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The term “Vulcan” was originally the GE Project Name for the first Gatling-type electric-powered minigun and is now a slang term for all of these electric Gatling guns.

The GAU-17/A gun system consist of a six-barrel rotary gun, a gun control assembly with electrical cables, gun drive motor unit, a delinking feeder, flexible ammunition feed chutes and an ammunition storage system. Gun component parts, such as the rotor, housing, feeder/delinker, and barrel clamp/flash suppressor, are available in either steel or lightweight titanium.

DESIGNATION Army – M134D
Air Force – GAU-2B/A
Navy – GAU-17/A
SHIP CLASS USED ON Many
DATE OF DESIGN about 1963
DATE IN SERVICE 1965
GUN WEIGHT 35 lbs. (16 kg)
GUN LENGTH OA 29.5 in (75 cm) including suppressor
Barrels are 22 in (55.9 cm) long
BORE LENGTH N/A
RIFLING LENGTH 20 in (50.8 cm)
GROOVES 4
LANDS N/A
TWIST Uniform RH 1 in 33.333
CHAMBER VOLUME N/A
RATE OF FIRE 2,000 to 4,000 rounds per minute

Source navweaps.com

The firing of weapons is controlled by a weapon management system equipped with head up display.

Survivability

1904143_813567178657006_1345098476_nRoyal Thai Army AW-139M – Image: Thai Defense News

The low thermal and acoustic signature improves the survivability of the AW139M helicopter. The cockpit and cabin can be equipped with ballistic protection. The crew protection is further improved with armoured seats. The helicopter also includes ballistic-tolerant, self-sealing fuel tanks.

_originalItalian Air Force

The onboard missile approach warning system provides threat information to the pilot for actuating the helicopter’s countermeasures. The Counter Measures Dispensing System (CMDS) deceives incoming missiles.

AW139M engine details

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“The AW139M is powered by two Pratt & Whitney PT6C-67C turbines driving the five-bladed main rotor.”
 1622361_813818651965192_843669037_oRoyal Thai Army AW-139M – Image: Thai Defense News

The AW139M is powered by two Pratt & Whitney PT6C-67C turbines driving the five-bladed main rotor. Each engine delivers a maximum continuous power of 1,252kW. The operation of the engine is controlled by Full Authority Digital Engine Control (FADEC) system.

2 x  Pratt & Whitney PT6C – 67C

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Engine Rating (2 x  Pratt & Whitney PT6C – 67C)
Take off power (5 min)

2 x 1252

kW

2 x 1679

shp

Maximum continuous power

2 x 1142

kW

2 x 1531

shp

O.E.I. max contingency power

1396

kW

1872

shp

O.E.I. max continuous power

1252

kW

1679

shp

Transmission Rating
Take off power (5 min)

1641

kW

2200

shp

Maximum continuous power

1491

kW

2000

shp

O.E.I. min contingency power

1193

kW

1600

shp

O.E.I. max continuous power

1044

kW

1400

shp

Technical data leonardocompany.com

Performance

14976634_1833574240196815_5463135927948066849_o.jpg

The AW139M helicopter has a maximum cruise speed of 306km/h. It can climb at a rate of over 10.9m/s up to a maximum altitude of 6,096m. The helicopter has a range of 1,250km. It can endure for up to six hours.

Military operators: Here

Technical Data

Weights
Max take off

6400 / 6800*

kg

14110 / 14991*

lb

Max useful load

2650 / 3050

kg

5843 / 6724

lb

Fuel Capacity
Standard

1568

l

414

USgal

Auxiliary

500

l

132

USgal

Crew
Pilots / passengers

1 – 2 / 15

External Dimensions
Length (rotors turning)

16.66

m

54

ft

08

in

Overall height

4.98

m

16

ft

04

in

Main rotor diameter

13.80

m

45

ft

03

in

Performance (ISA, 6400 kg / 14110 lb)
VNE

310

km/h

167

kt

Max cruise speed

306

km/h

165

kt

Rate of climb

10.9

m/s

2140

ft/min

Hovering IGE (TOP)

4682

m

15360

ft

Hovering OGE (TOP)

2478

m

8130

ft

Service ceiling (MCP)

6096

m

20000

ft

Max range **

1250

km

675

nm

Max endurance **

5 h 56 m

         * An Increased Gross Weight up to 7000 kg (15430 lb) is available as an kit
         ** with 1654 kg fuel – no reserve – @ 6000 ft

Technical data leonardocompany.com

Main material source army-technology.com

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