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Westland Wah-64 Apache




The WAH-64D is a licence-built version of the Boeing AH-64 Apache Longbow attack Helicopter for the British Army . The first eight helicopters were built by Boeing, the remaining 59 by Westland at Yeovil .

In British Army service the Apache AH Mk.1 will replace the Westland Lynx Anti-tank helicopters and will be operated by three regiments of the Army Air Corps as part of 16 (Air Assault) Brigade . The Apache will also operate in attack raids as US Army Apaches did on the first night of the Gulf War , destroying a major air defence node. Another mission is armed reconnaissance. Like the US Apache Longbow AH-64Ds the Westland Apache carries a Fire-control Radar (FCR) and Radar Frequency Interferometer (RFI), providing an integrated surveillance and attack system. the 'Longbow’ radar is the bulbous unit over the rotor hub assembly.

The UK's Strategic Defence Review called for Apaches to undertake amphibious attack missions, operating from HMS ''Ocean'' , the ''Invincible'' Class aircraft carriers and their successors, the ( Royal Navy CVF Programme ), and possibly the amphibious assault vessels HMS ''Bulwark'' and HMS ''Albion'' .

As such, one of the major differences between the WAH-64 and AH-64 Apache variants is the folding blade mechanism, required to stow the helicopters in the confined space onboard ship.

There are other differences between them, including
  • Rolls-Royce (ie British) RTM322 engines instead of the US General Electric T700 s. The Rolls-Royce engines fitted actually produce far more power than their GE counter-parts, and are currently under evaluation by the U.S. Government , with a view to updating the American AH-64s.

  • Blade anti-ice protection

  • BAE Systems (formerly GEC ) Helicopter Integrated Defensive Aids System (HIDAS).

  • Bowman secure communications system

  • Capability to carry CRV7 rockets

  • Capability to carry the advanced Brimstone missile.

  • A downgrading of the Laser used by the Apache for designating targets, as it is deemed too powerful for use in Britain , where the risks posed to the civilian population by blinding are higher than that in America.



PROJECT HISTORY

Procurement of the Apache has been somewhat protracted. The UK began the search in 1991 with an initial requirement for 127 aircraft. This number was further reduced to 97, and then 67, by the time the contract was signed in March 1996 . The first helicopter, built by Boeing, was delivered in March 1999. The first Westland built aircraft was delivered in July 2000 . The 67th and final Apache was handed over in July 2004 . The cost of the helicopter is currently expected to be £3.1 billion, £71 million above the original approved cost. This increase is due to increased costs of trials. The total acquisition cost of the project, including the training package, is expected to be £4.117 billion.

Further problems occurred when it was realised that there were not enough trained pilots for the new aircraft and as such many were put into storage at RAF Shawbury in 2004.

The Apache's first operation tour will be as part of 16 Air Assault Brigade in Afghanistan .


SPECIFICATIONS

  plane Or Copter copter
  jet Or Prop prop
  switch Order Of Units no
  crew 2
  length Main 58 ft 4 in
  length Alt 177 m with rotors
  span Main 16 ft 4 in
  span Alt 49 m
  height Main 12 ft 8 in
  height Alt 387 m
  area Main 1,8095 ft&sup2
  area Alt 16811 m&sup2
  empty Weight Main 11,387 lb
  empty Weight Alt 5,165 kg
  loaded Weight Main 17,650 lb
  loaded Weight Alt 8,006 kg
  useful Load Main lb
  useful Load Alt kg
  max Takeoff Weight Main 21,000 lb
  max Takeoff Weight Alt 9,525 kg
  thrust Main lbf
  thrust Alt kN
  engine (prop) Rolls-Royce
  type Of Prop RTM322 Turboshaft s
  number Of Props 2
  power Main 2,241 hp
  power Alt 1,671 kW
  max Speed Main 2268 mph
  max Speed Alt 365 km/h
  cruise Speed Main mph
  cruise Speed Alt km/h
  never Exceed Speed Main mph
  never Exceed Speed Alt km/h
  stall Speed Main mph
  stall Speed Alt km/h
  range Main 300 mi
  range Alt 482 km
  ceiling Main 21,000 ft
  ceiling Alt 6,400 m
  climb Rate Main 2,500 ft/min
  climb Rate Alt 127 m/s
  loading Main lb/ft&2
  loading Alt kg/m&2
  power/mass Main hp/lb
  power/mass Alt kW/kg
  armament '''Guns:'''




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