Eurocopter EC725 3D model

The Eurocopter EC725 Caracal, now called Airbus Helicopters H225M, is a long-range tactical transport military helicopter developed from the Eurocopter AS532 Cougar for military use. It is a twin-engined aircraft and can carry up to 28 seated troops along with two crew, depending on customer configuration. The helicopter is marketed for troop transport, casualty evacuation, and combat search and rescue duties, and is similar to the civilian EC225 Super Puma. The EC725 was developed to meet a French Air Force requirement for a specialist helicopter for Combat Search and Rescue operations. The AS 532 A2 Cougar model was examined and rejected for this purpose following extensive trials between 1996 and 1999. The primary improvements desired by the French Air Force were more powerful engines, greater flight endurance and improved combat durability.[3] Eurocopter opted to pursue development of a more ambitious derivative of the AS 532 to meet this need, which was later designated as the EC725. The EC725 was initially named Cougar Mk II+ due to treaty reasons. The new aircraft also featured new mission equipment and autonomous avionics, along with other changes to meet the French specification.[3]

On 27 November 2000, the first EC725 prototype performed its maiden flight at Marignane, and on 15 January 2001, the first public presentation of the new helicopter took place.[4] In concurrent development of the military-orientated EC725, Eurocopter also developed a civil-orientated counterpart, which was designated as the EC225. The French Air Force subsequently ordered an initial six EC725s to perform the Combat Search & Rescue mission, the first of these was delivered in February 2005. A follow-on order for eight more EC725s was placed for the French Armed Forces in November 2002; a total fleet of 20 EC725s in French service was envisioned in 2004.[3][5][unreliable source?]

By 2015, the EC725, since re-designated as the H225M, was being manufactured on two separate production lines in France and Brazil. In July 2015, Airbus Helicopters announced that it was considering setting up a third assembly line in India if the firm was successful at winning an Indian tender for naval helicopters The EC725 is based on the Eurocopter AS 532 Cougar, improving upon the design with a five-blade composite main rotor incorporating a new airfoil shape to reduce vibration levels. The helicopter can be fitted with removable armour plating to protect the troops and is powered by two Turbomeca Makila 1A4 turboshaft engines mounted over the cabin, which feature a dual-channel full authority digital engine control (FADEC) system. They can be fitted with an anti-icing system to enable the aircraft to operate in very cold climates. Other improvements include a reinforced main rotor gearbox and an all glass cockpit. The cockpit is equipped with an integrated display system featuring a digital map and active-matrix liquid-crystal display.[3]

The helicopter has day and night time search and rescue capabilities by way of a search radar and forward-looking infrared (FLIR); these allow the EC725 to be flown under visual meteorological and instrument flight rules conditions.[7] The EC725 can be equipped with various military equipment and armaments, such as a pair of 7.62 mm FN MAG machine guns mounted within forward left and right windows, or a pair of 68 mm (2.75") Thales Brandt or Forges de Zeebrugge side-mounted rocket launchers, each with 19 rockets, or the MU90 Impact aerial-launched torpedo.[7]

An FN MAG mounted on an EC725 Brazilian EC725s are equipped with a Helibras-built countermeasures suite, which includes chaff and flares to confuse radar and heat-guided missiles respectively;[8] Thales has also produced self-protection systems to equip French EC725s.[9] The Exocet anti-ship missile has also been integrated upon Brazilian Navy EC725s.[10]

Eurocopter developed four primacy cabin configurations for the type. The Troop Transport version contains a seating arrangement for a maximum of 29 troops, in addition to the crew. A dedicated VIP transport version is designed to contain between 8 and 12 passengers. The Casualty Evacuation version can carry up to 12 stretchers along with a total of four seated medical staff. The Combat SAR configuration is fully equipped to perform search and rescue duties in a combat environment.[3] According to Airbus Helicopters, the H225M is capable of undertaking various mission roles including combat search and rescue, long-range tactical transport, aeromedical transport, logistic support and shipboard maritime operations.[11]

The armed version carries gun pods, rocket pods and Hellfire air-to-surface missiles (HForce Generic Weapon System (GWS) with Thales Scorpion helmet-mounted sight display (HMSD) and Wescam electro-optical sensor)