Aérospatiale SA 330 Puma

The Aérospatiale SA 330 Puma is a four-bladed, twin-engined medium transport/utility helicopter that was designed and originally produced by the French aerospace manufacturer Sud Aviation. It is capable of carrying up to 20 passengers as well as a variety of cargoes, either internally or externally; numerous armaments have also been outfitted to some helicopters.

The Puma was originally developed as an all-new design during the mid-1960s in response to a French Army requirement for a medium-sized all-weather helicopter. On 15 April 1965, the first prototype Puma made its maiden flight; the first production helicopter flew during September 1968. Deliveries to the French Army commenced in early 1969; the type quickly proved itself to be a commercial success. Production of the Puma continued into the 1980s under Sub Aviation's successor company Aérospatiale. It was also license-produced in Romania as the IAR 330; two unlicensed derivatives, the Denel Rooivalk attack helicopter and Atlas Oryx utility helicopter, were built in South Africa. Several advanced derivatives have been developed, such as the AS332 Super Puma and AS532 Cougar, and have been manufactured by Eurocopter and its successor company Airbus Helicopters since the early 1990s. These descendants of the Puma remain in production in the 21st century.

The Puma has seen combat in a range of theatres by a number of different operators; significant operations include the Gulf War, the South African Border War, the Portuguese Colonial War, the Yugoslav Wars, the Lebanese Civil War, the Iraq War, and the Falklands War. Numerous operators have chosen to modernise their fleets, often adding more capabilities and new features, such as glass cockpits, Global Positioning System (GPS) navigation, and various self-defense measures. The type also saw popular use in the civilian field and has been operated by a number of civil operators. One of the largest civil operators of the Puma was Bristow Helicopters, which regularly used it for off shore operations over the North Sea.

Development

The SA 330 Puma was originally developed by Sud Aviation to meet a requirement of the French Army for a medium-sized all-weather helicopter capable of carrying up to 20 soldiers as well as various cargo-carrying duties. The choice was made to develop a completely new design for the helicopter, work began in 1963 with backing from the French government.McGowen 2005, p. 123. The first of two Puma prototypes flew on 15 April 1965; six further pre-production models were also built, the last of which flew on 30 July 1968. The first production SA 330 Puma flew in September 1968, with deliveries to the French Army starting in early 1969.Taylor 1976, p. 41.

In 1967, the Puma was selected by the Royal Air Force (RAF), who were impressed by the Puma's performance. It was given the designation ''Puma HC Mk 1''. A significant joint manufacturing agreement was signed between Aerospatiale and Westland Helicopters of the UK. The close collaboration between the French and British firms would lead to purchases of Aérospatiale Gazelle by the UK and the Westland Lynx by France. Under this agreement, Westland manufactured a range of components and performed the assembly of Pumas ordered by the RAF.Lake 2001, pp. 97–98.

The SA 330 was a success on the export market, numerous countries purchased military variants of the Puma to serve in their armed forces; the type was also popularly received in the civil market, finding common usage by operators for transport duties to off-shore oil platforms. Throughout most of the 1970s, the SA 330 Puma was the best selling transport helicopter being produced in Europe. By July 1978, over 50 Pumas had already been delivered to civil customers, and the worldwide fleet had accumulated in excess of 500,000 operational hours.

Romania entered into an arrangement with Aerospatiale to produce the Puma under license as the IAR 330, manufacturing at least 163 of the type for the Romanian armed forces, civil operators, and several export customers of their own.McGowen 2005, p. 124. Indonesia also undertook domestic manufacturing of the SA 330. South Africa, a keen user of the type, performed their own major modification and production program conducted by the government-owned Atlas Aircraft Corporation to upgrade their own Pumas, the resulting aircraft was named Oryx. In the 1990s, Denel would also develop an attack helicopter for the South African Air Force based on the Puma, known as the Denel Rooivalk.

In 1974, Aerospatiale began development of improved Puma variants, aiming to produce a successor to the type; these efforts would cumulate in the AS332 Super Puma. The first prototype AS332 Super Puma took flight on 13 September 1978, featuring more powerful engines and a more aerodynamically-efficient extended fuselage; by 1980, production of the AS332 Super Puma had overtaken that of the originating SA 330 Puma. Production of the SA 330 Puma by Aérospatiale ceased in 1987,Lake 2001, p. 100. by which time a total of 697 had been sold;Taylor 1988, p. 57. production in Romania would continue into the 21st Century.McGowen 2005, p. 154.

Design

The SA 330 Puma is a twin-engine helicopter intended for personnel transport and logistic support duties. As a troop carrier, up to 16 soldiers can be seated on foldable seats; in a casualty evacuation configuration, the cabin can hold six litters and four additional personnel; the Puma can also perform cargo transport duties, using alternatively an external sling or the internal cabin, with a maximum weight of 2500 kg. Civilian Pumas feature a variety of passenger cabin layouts, including those intended for VIP services. In a search and rescue capacity, a hoist is commonly installed, often mounted on the starboard fuselage.Neal 1970, pp. 814–815

A pair of roof-mounted Turbomeca Turmo turboshaft engines power the Puma's four-blade main rotor. The helicopter's rotors are driven at a speed of roughly 265 rpm via a five reduction stage transmission. The design of the transmission featured several unique and uncommon innovations for the time, such as single-part manufacturing of the rotor shaft and the anti-vibration measures integrated into the main gearbox and main rotor blades. The Puma also featured an automatic blade inspection system, which guarded against and alerted crews to fatigue cracking in the rotor blades. There are two hydraulic systems on board, these operate entirely independent of one another, one system powers only the aircraft's flight controls while the other serves the autopilot, undercarriage, rotor brake, and the flight controls.

In flight, the Puma was designed to be capable of high speeds, exhibit great maneuverability, and have good hot-and-high performance; the engines have an intentionally high level of reserve power to enable a Puma to effectively fly at maximum weight with only one functioning engine and proceed with its mission if circumstances require. The cockpit has conventional dual controls for a pilot and copilot, a third seat is provided in the cockpit for a reserve crew member or commander. The Puma features a SFIM-Newmark Type 127 electro-hydraulic autopilot; the autopilot is capable of roll and pitch stabilization, the load hook operator can also enter corrective adjustments of the helicopter's position from his station through the autopilot.

The Puma is readily air-transportable by tactical airlift aircraft such as the Transall C-160 and the Lockheed C-130 Hercules; the main rotor, landing gear, and tailboom are all detachable to lower space requirements. Ease of maintenance was one of the objectives pursued in the Puma's design; many of the components and systems that would require routine inspection were positioned to be visible from ground level, use of life-limited components was minimised, and key areas of the mechanical systems were designed to be readily accessed. The Puma is also capable of operating at nighttime, in inhospitable flying conditions, or in a wide range of climates from Arctic to desert environments."Puma HC1."
''Royal Air Force'', Retrieved: 10 April 2013.

Although not included during the original production run, numerous operators of Pumas have installed additional features and modern equipment over the aircraft's service life. The RAF have equipped their Puma fleet with Global Positioning System (GPS) navigation equipment, along with an assortment of self-defense measures including infrared jammers and automatic flares/chaff dispensers, and night vision goggles for night-time flights. The French Army Light Aviation have modernised their Pumas to meet International Civil Aviation Organization standards, this involved additional digital systems to the aircraft, this has included new mission command and control systems, such as the Sitalat data link. Third party companies such as South Africa's Thunder City have provided life extension and modernisation programmes for the Puma, some operators have chosen to refurbish their fleets with glass cockpits.

Operational history

Argentina

During the Falklands War/Guerra de Malvinas in 1982, five SA 330 Pumas of the Argentine Army and one of the Argentine Coast Guard were deployed to the theatre; these could either operate from the decks of Navy vessels as well as performing missions across the breadth of the islands; all were lost in the ensuing conflict. On 3 April, while landing Argentine troops as part of the capture of South Georgia, a Puma was badly damaged by small arms fire from British ground forces and crashed into terrain shortly after. On 9 May, a single Puma was destroyed by a Sea Dart anti-aircraft missile launched from . On 23 May, a pair of Royal Navy Sea Harriers intercepted three Argentine Pumas in the middle of a supply mission to Port Howard; during the subsequent engagement one Puma was destroyed by colliding with the terrain and a second was disabled and subsequently destroyed by cannon fire from the Sea Harriers, the third Puma escaped. On 30 May, a Puma was lost in the vicinity of Mount Kent under unknown circumstances, possibly due to friendly fire. An article in the Argentine newssite MercoPress states however that on 30 May, at about 11.00 a.m., an Aerospatiale SA-330 Puma helicopter was brought down by a Stinger missile, fired by the SAS, in the vicinity of Mount Kent. Six National Gendarmerie Special Forces were killed and eight more wounded.

France

In September 1979, four Pumas were employed during Operation Barracuda to transport a French assault team directly upon the government headquarters of the Central African Empire; after which confiscated valuables and assorted diplomatic and political records were quickly extracted to the nearby French embassy by continuous air lifts by the Pumas.

One distinctive use of the Puma in French service was as a VIP transport for carrying the President of France both at home and during overseas diplomatic engagements; these duties were transferred to the larger AS332 Super Puma as that became available in sufficient numbers.

During the 1991 First Gulf War, France chose to dispatch several Pumas in support of coalition forces engaged in a conflict with Saddam Hussein's Iraq. Those Pumas that had been assigned to the role of performing combat search-and-rescue duties were quickly retrofitted with GPS receivers to enhance their navigational capabilities.

As part of France's contribution to the 1990s NATO-led intervention in the Yugoslav Wars, a number of French Pumas operated in the region alongside other Puma operators such as Britain and the United Arab Emirates; one frequent mission for the type was the vital provision of humanitarian aid missions to refugees escaping ongoing ethnic genocide. In April 1994, a French Puma performed a nighttime extraction of a British SAS squad and a downed Sea Harrier pilot from deep inside hostile Bosnian territory, the aircraft came under small arms fire while retreating from the area. On 18 June 1999, a single coordinated aerial insertion of two companies of French paratroopers was performed by 20 Pumas, helping to spearhead the rapid securing of Kosovska Mitrovica by NATO ground forces.

As of 2010, both the French Army and French Navy have opted to procure separate variants of the NHIndustries NH90 to ultimately replace the Puma in French military service.

About 20 SA 330 Pumas remain in French Air and Space Force service as of 2016. Two Pumas of ''Escadron d'Hélicoptères 1/67 'Pyrénées'' (EH 1/60) were deployed to Chad and Niger

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