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AgustaWestland Merlin HM.1

1995 · Three-engine super-medium turbine helicopter

Factory at UK Yeovil

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Royal Navy variant with manufacturer designation Mk.111 and built at Yeovil, Somerset UK.

The British MoD placed an initial order for 44 Merlin HM.1 airframes in Sep 1991.

Major Milestones:
  • First flight by a production Merlin, Dec 06, 1995
  • First mission system fitted Merlin flew in Jan 1997
  • First Merlin HM Mk1 Squadron, 700M Naval Air Squadron, commissioned on Dec 1998
  • In Service Date (ISD) achieved on Mar 1999, 12 aircraft delivered
  • Delivery of last aircraft, Oct 2003
  • Upgraded to HM.2 variant from 2012
  • Specifications

    Engine3 x Rolls-Royce RTM322 2200 shp
    Capacity3
    Length (m)19.63
    Height (m)6.63
    Blades5
    Rotor diam. (m)18.6
    Disc area (m2)271.72
    Weight (kgs)Empty: 9080 Max: 14600
    Speed (km/h)Cruise: 280 Max: 309
    Range (km)1157
    Ceiling (m)4572
    Rate/Climb (m/min)612
    blueprints Merlin HM.1

    Operators

    1998- UK Fleet Air Arm EH101
    2000- UK Leonardo UK EH101