Last site update: 03-10-2008

 

         

 

  

 

AgustaWestland EH101

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AgustaWestland EH101

The EH101 military utility medium lift helicopter is manufactured by AgustaWestland (formerly E.H. Industries), a joint venture company formed by Agusta of Italy and the British company GKN. The EH101 is also produced in naval and civil versions. In July 2002, AgustaWestland signed an agreements with Lockheed Martin and Bell Helicopters to jointly market and produce a version of the helicopter for the US market, the US101. The US101 helicopter is chosen for the US Marine One presidential transport fleet requirement.

The EH101 is the benchmark medium-lift helicopter, which is now in service with operators around the world. The three-engine EH101 is the most advanced aircraft in its category and incorporates advanced systems to provide outstanding performance. Originating from the requirements of the naval forces of both Italy and the UK, the EH101 is unique in being designed for maritime and other military missions.

       EH101 Multi-Mission Capability:

  • Combat & non-combat military search and rescue. 

  • Civilian search and rescue, disaster relief, medical evacuation. 

  • Mine countermeasures.

  • Anti-submarine warfare.

  • Onboard delivery of cargo. 

  • VIP & personnel transport.

  • Special Operations Forces.

  • Law-enforcement missions.

    US101

    The U.S. Navy selected (January 28, 2005) the US101 for a new fleet of "Marine One" helicopters for the President of the United States.  Lockheed Martin, which leads Team US101 as prime contractor, will receive a $1.7 billion contract from the Navy for the Marine One program's systems development and demonstration phase.  The team will build and equip the US101 medium-lift helicopter to provide a safe and secure "Oval Office in the Sky" for the President. 

    Based on the current contract schedule, the first US101 ready to transport the President is expected to be available in 2009, with the entire fleet of 23 US101 delivered to the Marine One squadron by late 2014.

    For the American version of the Merlin, the US101, Lockheed Martin would build the avionics; Bell Helicopter would make the airframe; and AgustaWestland would make the drive train, rotors and gearboxes. General Electric will power the engines (CT-7-8E) of the US-101.

    KHI-01

    AgustaWestland and Kawasaki Heavy Industries (KHI) signed a license and purchase agreement in 2003 to produce and support the Japanese EH101s (designated KHI-01). KHI has established manufacturing, test flight and support facilities at its Gifu works in Japan. Fourteen utility RTM322 powered, rear-ramped variants of the EH101 have been ordered to replace the Japan Maritime Self Defence Force’s (JMSDF) fleet of Sikorsky MH-53Es and S-61s. 

    One KHI01 is built by AgustaWestland’s Yeovilton facility in the UK. Aircraft kits for the remaining 13 aircraft will be prepared by AgustaWestland in the UK with final assembly taking place in Japan. The KHI build line is due to receive the first two aircraft in the last quarter of 2005 with delivery of the first aircraft to the JDA in 2006.

 

 

Developing Nation: UK/Italy.
Manufacturer/Designer:  AgustaWestland.
Task: Multi-role helicopter.
First Flight:

October 9,1987 serial ZF641.

First Delivery: January 2001.
Crew: 2 Cockpit crew, the ASW versions will also carry two more sensor operators / observers.
Troops: 30 troops or 16 stretchers.
Cargo volume: 29 m³.
Maine rotor blades: 5.
Maine rotor diameter: 18,59 m.
Maine rotor disc area: 271,5 m².
Tail rotor blades: 4.
Tail rotor diameter: 4,01 m.
Tail rotor disc area: 12,65 m².
Length overall, rotors turning: 22,81 m.
Length fuselage: 19,53 m.
Height overall: 6,65 m.
Engine (s):

3 x Rolls-Royce Turboméca RTM322-01/8 or RTM332-02/8 for UK military versions or General Electric T700-GE-T6A for Italian navy version. Civil models to get General Electric CT7-6 turbo shafts.

Weight:

- Empty: 10.500 Kg.

- Internal fuel: 3.222 Liters.

- External fuel: 5.370 Liters.

Payload:

- Internal: Naval variant 960 Kg.

                Merlin HC.3 3.120 Kg.

- External at slung: 5.443 Kg.

Max. Take off weight: 14.600 Kg.
Cruise Speed: 278 km/h.
Max. Speed: 309 km/h.
Service ceiling: 4.575 m.
Hovering ceiling:

- in ground effect 2.225 m.

- out of ground effect 1.128 m.

Max. Range: 2.093 km.
Performance: Max. endurance 7 hours.
Rate of climb: 609 m per minute.
Radar: GEC Ferranti Blue Kestrel 360°search radar.
Weapons:

- Pintle mounted 12.7/7.62 machine gun.

- Anti-ship missiles.

- Torpedoes.

- Depth charges.

- Marte Mk.2S missile.

 

AgustaWestland EH101 operators:

United Kingdom.

- 44 Merlin HM.1 (Navy).

- 22 Merlin HC.3 (RAF). 

US Navy - 23 US101 (Marine one's)
Italy.

- 16 EH101-110ASW.

Canada.

- 15 CH-149 Cormorant. 

Japan. - 14 KHI01
Denmark. - 14 EH101
Portugal. - 12 EH101 (first delivery December 22nd 2004)
Tokyo Metropolitan Police. - 1 EH101

 

 

 

 

AgustaWestland EH101 Crashes:

  • Prototype MM600 (PP-2) crashed January 21, 1993 during low altitude flight in Italy.

  • On October 27, 2000 ZH844 Merlin HM1 from 700M Initial Flying Trails Squadron, Royal Navy crashed in the water of the Inner Sound near Applecross, United Kingdom. The  Merlin HM1 broke in two pieces, and the crew was rescued by a fishers vessel.

  • ZH859/584  Merlin HM1 from 824 squadron Royal Navy crashed during take-off from RNAS Culdrose March 30, 2004. The crew of fife was wounded.

 

EH101 in service:

SFOR

In early April 2003, two Royal Air Force EH101 Merlin HC Mk3 aircraft self-deployed from the UK to Banja Luca, Bosnia, to support NATO's Stabilization Force (SFOR). By late July, the aircraft had logged 460 flight hours transporting security forces across a country strewn with an estimated five million anti-personnel mines. From November 2003 five Royal Air Force Merlin HC3, each aircraft was outfitted with a directional infrared countermeasures system (DIRCM) for anti-missile system defense and a winch for load lifting. Secondary roles included load lifting, aerial surveillance and transporting military and political VIPs. Aircraft availability is listed at 98 percent.

Gulf Region

In March 2003 Britain's Royal Navy assigned four EH101 Merlin Mk1 aircraft to fly surveillance missions in the Arabian Gulf.

Deployed with the Royal Fleet Auxiliary Fort Victoria, the Merlin Mk.1s flew 800 hours providing airborne radar coverage of the waters surrounding the Task Force. A Merlin was continuously on station 24/7 above the fleet for three weeks of the four-month deployment. During the critical 14 days of the conflict, the four aircraft flew a total 200 hours.

The Merlin's also proved their interoperability with coalition and other NATO forces. Each aircraft's Link 11 capability was fully integrated with the fleet's C4I network, allowing naval commanders to monitor EH101 radar-generated tracks and information in real time.

 

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