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Eurocopter AS332 Super Puma

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Eurocopter AS332 Super Puma

The Airbus Helicopters H215 (formerly Eurocopter AS332 Super Puma) is a four-bladed, twin-engined, medium-sized, utility helicopter developed and initially produced by French aerospace company Aérospatiale. It has been subsequently manufactured by the successor companies Eurocopter and Airbus Helicopters. The Super Puma is a re-engined and larger version of the original Aérospatiale SA 330 Puma.

The Super Puma was developed during the 1970s, based on the successful SA 330 Puma. While retaining a similar layout, the fuselage was redesigned to increase its damage tolerance and crashworthiness, and composite materials were more extensively used. A pair of more powerful Turbomeca Makila turboshaft engines was used, the nose was more streamlined, and there were other changes. Two alternative fuselage lengths, a shortened and stretched form, were developed from the onset. On 5 September 1977, the SA 331 preproduction prototype performed its maiden flight; the first true Super Puma made its first flight roughly one year later. By 1980, the Super Puma had succeeded the SA 330 Puma as Aérospatiale's principal utility helicopter. The Super Puma quickly proved itself to be a commercial success for both military and civilian customers. The French Army was a keen early customer, using the type in its new rapid-response task force, and routinely dispatching Super Pumas to support France's overseas engagements in Africa and the Middle East.

The Indonesian state-owned aircraft manufacturer PT Dirgantara Indonesia manufactured the model under license. In the civilian sector, it has been heavily used to support offshore oil rigs and aerial firefighting. Since 1990, Super Pumas in military service have been marketed under the AS532 Cougar name. In civilian service, a next-generation successor to the AS 332 was introduced in 2004, the further-enlarged Eurocopter EC225 Super Puma.

During 1974, Aérospatiale commenced development of a new medium transport helicopter based on its successful SA 330 Puma. The project's existence was publicly announced at the 1975 Paris Air Show. While the new design retained a similar general layout to the preceding AS 330, it was powered by a pair of Turbomeca Makila turboshaft engines, which had recently been developed and were more powerful than the preceding Turbomeca Turmo. The rotorcraft's four-bladed main rotor was redesigned to make use of composite materials. The design team paid substantial attention to increasing the new model's damage resistance; a more robust fuselage structure and a new crashworthy undercarriage were adopted, the rotor blades are able to withstand some battle damage, and various other key mechanical systems were modified.

External features that distinguish the new helicopter from the SA 330 include a ventral fin underneath the tail boom and a more streamlined nose. From the project's onset, it had been planned for the new rotorcraft to be available in two fuselage lengths: a short-fuselage version with similar capacity to the SA 330 while providing superior performance under "hot and high" conditions, and a stretched version which allowed more internal cargo or passengers to be carried in circumstances where overall weight was deemed to be less critical.

On 5 September 1977, a preproduction prototype, the SA 331, modified from a SA 330 airframe by the addition of Makila engines and a new gearbox, performed its maiden flight. The first prototype of the full Super Puma made its first flight on 13 September 1978, and was quickly followed by a further five prototypes. Flight testing found that the AS 332 Super Puma had a higher cruise speed and more range than the SA 330 Puma,, in part due to the Makila engine providing greater power output, and also a 17% reduction in fuel consumption. The Super Puma was also far more stable in flight, and was less reliant on automated corrective systems. The development of military and civilian variants was carried out in parallel, including at the certification stage. During 1981, the first civil Super Puma was delivered.

By 1980, the AS 332 Super Puma had replaced the preceding SA 330 Puma as Aérospatiale's principal utility helicopter. It quickly proved to be highly popular amongst its customers; between July 1981 and April 1987, on average, three helicopters per month were being built for operators from both the military and civilian sectors. The success of the AS 332 Super Puma led to the pursuit of additional development programs that produced further advanced models. These included the introduction of features including lengthened rotor blades, more powerful engines and gearboxes, increases in takeoff weight, and modernised avionics. Overseas manufacturing was established; Indonesian Aerospace (IPTN) produced both the SA 330 and AS 332 under license from Aerospatiale; IPTN-build rotorcraft were produced for both domestic and some overseas customers.

A wide variety of specialised Super Puma variants followed the basic utility transport model into operation, including dedicated search-and-rescue (SAR) and antisubmarine warfare (ASW) versions. Since 1990, military-orientated Super Pumas have been marketed under the AS532 Cougar name. As a fallback option to the NHIndustries NH90 programme, a Mark III Super Puma was considered for development at one stage. By 2005, various models of Super Puma had been operated by numerous customers across 38 nations for a wide variety of purposes. 565 Super Pumas (including military-orientated Cougars) had been delivered or were on order at this time.

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