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Aérospatiale SA 321 Super Frelon

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(Redirected from Changhe Z-8) 1962 transport helicopter family This article is about the Super Frelon. For other uses, see Frelon (disambiguation).
SA 321 Super Frelon
A Super Frelon helicopter of the French Navy
General information
TypeTransport helicopter
National originFrance
ManufacturerSud Aviation
Aérospatiale
StatusIn service with the People's Liberation Army Naval Air Force
Primary usersFrench Navy People's Liberation Army Air Force
South African Air Force
Iraqi Air Force
Number built110
History
Manufactured1962–1981
Introduction date1966
First flight7 December 1962
Developed fromSNCASE SE.3200 Frelon
Developed intoAvicopter AC313

The Aérospatiale (formerly Sud Aviation) SA 321 Super Frelon ("Super Hornet") is a three-engined heavy transport helicopter produced by aerospace manufacturer Sud Aviation of France. It held the distinction of being the most powerful helicopter to be built in Europe at one point, as well as being the world's fastest helicopter.

The Super Frelon was a more powerful development of the original SE.3200 Frelon, which had failed to enter production. On 7 December 1962, the first prototype conducted the type's maiden flight. On 23 July 1963, a modified Super Frelon flew a record-breaking flight, setting the new FAI absolute helicopter world speed record with a recorded speed of 217.7 mph (350.4 km/h). Both civilian and military versions of the Super Frelon were produced; the type was predominantly sold to military customers. In 1981, Aerospatiale, Sud Aviation's successor company, chose to terminate production due to a lack of orders.

The Super Frelon was most heavily used by naval air arms, such as the French Naval Aviation and the People's Liberation Army Naval Air Force. On 30 April 2010, the type was retired by the French Navy, having been replaced by a pair of Eurocopter EC225 helicopters as a stopgap measure pending the availability of the NHIndustries NH90 helicopter. The Super Frelon was in use for an extended period within China, where it was manufactured under license and sold by the Harbin Aircraft Industry Group as the Harbin Z-8. A modernised derivative of the Z-8, marketed as the Avicopter AC313, performed its first flight on 18 March 2010.

Development

Background

The SA.3210 Super Frelon was developed by French aerospace company Sud Aviation from the original SE.3200 Frelon. During the type's development, Sud Aviation had risen to prominence as a major helicopter manufacturer, having exported more rotorcraft than any other European rival. Having produced the popular Aérospatiale Alouette II and Aérospatiale Alouette III, the firm was keen to establish a range of helicopters fulfilling various roles, functions, and size requirements; two of the larger models in development by the early 1960s were the Super Frelon and what would become the Aérospatiale SA 330 Puma. The Super Frelon was the largest helicopter in development by the firm, being substantially increased over the earlier Frelon, and was considered to be an ambitious design at the time.

The earlier Frelon had been developed to meet the requirements of both the French Navy and the German Navy, which both had released details on its anticipated demands for a heavy helicopter; however, these requirements were revised upwards by the customer, leading to the redesign and emergence of the Super Frelon. Changes included the adoption of much more powerful engines, using three Turbomeca Turmo IIIC turboshaft engines, each capable of generating 1,320 shp (980 kW) on the prototypes (later uprated to 1,500 shp (1,100 kW) on production models) in place of the Frelon's 750 / 800 shp (560 / 600 kW) Turbomeca Turmo IIIB engines; these drove a 62 ft (19 m) six-bladed main rotor, instead of the Frelon's 50 ft (15 m) four-bladed one, and a five-bladed (instead of four-bladed) tail rotor. Overall, the modified design provided for a greatly increased gross weight, from 17,650 to 26,450 lb (8,010 to 12,000 kg), whilst improving the rotorcraft's aerodynamic efficiency and handling qualities.

Additional external changes between the Frelon and Super Frelon had been made, such as the original stubby tail boom having been replaced by a more conventional one, albeit with a crank in it to raise the tail rotor clear of vehicles approaching the rear loading ramp. Taking note of American experiments with amphibious helicopters, the Super Frelon's fuselage was redesigned into a hull, featuring a bow, planing bottom and watertight bilge compartments. Various foreign manufacturers participated in the development and manufacturing of the type; American helicopter company Sikorsky was contracted to supply the design of a new six-bladed main rotor and five-bladed tail rotor, while Italian manufacturer Fiat supplied the design for a new main transmission.

Into flight

On 7 December 1962, the first prototype Super Frelon conducted the type's maiden flight. On 28 May 1963, it was followed by the second prototype. The first prototype was tailored towards meeting the needs of the French Air Force, while the second was fully navalised, including lateral stabilising floats fixed to the undercarriage. On 23 July 1963, a modified prototype Super Frelon helicopter was used to break the FAI absolute helicopter world speed record, having attained a maximum speed of 217.7 mph (350.4 km/h) during the flight. Flown by Jean Boulet and Roland Coffignot, a total of three international records were broken, these being: speed over 3 km at low altitude, 212.03 mph (341.23 km/h); speed at any altitude over 15 and 25 km, 217.77 mph (350.47 km/h); and 100km closed circuit 207.71 mph (334.28 km/h).

By April 1964, the two prototypes had accumulated 388 flying hours, which included 30 hours of seaworthiness trials performed with the second prototype. In January 1964, the third Super Frelon prototype made its first flight, the fourth first flew during May 1964, and a pair of pre-production models were completed during the latter half of 1964. The third prototype participated in a series of accelerated wear trials to establish component endurance and overhaul lifespan, while the fourth prototype was assigned to further tests of equipment for the naval environment.

By July 1964, the French Government had placed an initial order for the Super Frelon, intended to perform logistic support duties at the Centre Experimental du Pacifique; negotiations for a further order was already being negotiated for the naval version, which were to be equipped for anti-submarine duties. However, West German support for the Super Frelon programme had already declined by this point, partially due to interest in the rival Sikorsky SH-3 Sea King, which was evaluated against the type.

Both civilian and military versions of the Super Frelon were built, with the military variants being the most numerous by far, entering service with the French military as well as being exported to Israel, South Africa, Libya, China and Iraq. Three military variants were produced: military transport, anti-submarine and anti-ship. The transport version is able to carry 38 equipped troops, or alternatively 15 stretchers for casualty evacuation tasks.

Design

The load deck of a Super Frelon

The Aérospatiale SA 321 Super Frelon is a large, heavy-lift single-rotor helicopter, furnished with a relatively atypical three-engine configuration; these are Turboméca Turmo IIIC turboshaft engines set on top of the fuselage, a pair of turbines positioned side by side at the front and one located aft of the main rotor. The naval anti-submarine and anti-ship variants are usually equipped with navigation and search radar (ORB-42), and a 50-metre rescue cable. They are most often fitted with a 20 mm cannon, countermeasures, night vision, a laser designator and a Personal Locator System. The Super Frelon can also be fitted for inflight refueling.

The front engines have simple individual ram intakes, while the rear one is fitted with a semi-circular scoop to provide air; all three bifurcated exhausts are near to the rotor head. The three engines and the reduction gearbox are mounted on a horizontal bulkhead and firewall which forms the roof of the cabin and upper structural member of the fuselage. The engines are isolated by multiple firewalls, including transverse firewalls separating front and rear engines from the rotor gearbox, and zonal engine firewalls. Eight sturdy hinged doors provide access to the compact Turmo engines, which have ample space around them to enable ground crew to service them without using external platforms.

The fuselage is actually a hull, which makes use of a semi-monocoque light alloy construction; according to aerospace publication Flight International, the hull design was "reminiscent of flying-boat engineering". The main cabin lacks any transverse bracing, except for a single bulkhead between the cockpit and cabin. Substantial built-up frames connect the strengthened roof structure with the floor/planing-bottom of transverse under-floor bulkheads and outer skin. A conventional exterior skin is used, employing longitudinal stiffeners as well as two lines of deep channel members, while the under-floor cross members are reinforced with vertical stiffeners. There is no keel, at the floor level there are horizontal members between frames which are stiffened by transverse shear angles. Flexible fuel cells are stored in four watertight under-floor compartments lying fore and aft of the rotor axis, while the floor itself is fitted with removable panels. A hatch set into the floor, positioned approximately underneath the rotor axis, is used for sling-load operations.

At the rear of the cabin is a tapered section of simple semi-monocoque construction, which is closed by a robust hinged rear loading ramp, which serves as the main entrance for bulky loads or equipment. The loading ramp is jettisonable in emergency situations. Additionally, there is a sliding door located on the forward starboard side, while a small hinged emergency door is set on the aft port side. The tail boom uses conventional semi-monocoque construction, supported by closely spaced notched channel-section frames and continuous stringers, absent of any major longitudinal sections or longerons. The cranked section carrying the tail rotor and trim plane is more robust, strengthened by a solid-web spar, frames, and stiffeners. The juncture of the main boom and cranked section is hinged in order to reduce the rotorcraft's folded length to 58 ft (18 m). Along the top of the boom, the shaft for the tail rotor is covered by a fairing.

The fixed landing gear has twin wheels on each of the three vertical shock absorber-equipped struts. The main leading gear units are mounted on triangulated tubular structures, while the nose gear is bracketed to the cockpit bulkhead via a watertight seal in the planing bottom. The main wheels have hydraulic brakes operated from the pedals, complete with a parking hand brake, while the nose unit is fully castoring. The nose, which is covered by large glazed panels, has a bow chine and planing bottom built as a unit with the flight deck, which is higher than the main cabin floor.

Operational history

China

A Z-8KH of the PLAAF

From December 1975 to April 1977, China took delivery of a batch of 12 SA 321 Super Frelon navalised helicopters. These helicopters came in two variants: anti-submarine warfare (ASW) and search and rescue (SAR) versions. The Super Frelon was the first helicopter of the People's Liberation Army (PLA) to be capable of operating from the flight deck of surface vessels.

China has also manufactured a number of Super Frelons locally, where it is known under the designation Z-8 (land-or-ship based ASW/SAR helicopter). The Super Frelon remains operational with the PLA Navy as of 2014.

Since the early 1980s, the Super Frelons have been frequently used by the People's Liberation Army Navy (PLAN) for conducting shipborne ASW and SAR operations. For ASW missions, the Z-8 is equipped with surface search radar and a French HS-12 dipping sonar while carrying a Whitehead A244S torpedo under the starboard side of the fuselage. The rotorcraft were also used to ferry supplies from replenishment ship to surface combatants, and transport marines from the landing ship to the shore.

A naval SAR version, designated as the Z-8S, was outfitted with upgraded avionics, a searchlight, FLIR turret and a hoist, made its first flight in December 2004. Another rescue variant, furnished with dedicated medivac equipment on board, was also developed for the Navy, designated as the Z-8JH.

The Z-8A version was developed as an army transport variant and received certification in February 1999. In 2001, a pair of Z-8As were delivered to the Army for evaluation, however, it ultimately decided to procure additional Mi-17V5s instead. Only a single batch of about six Z-8A were delivered to the Army in November 2002; these still retained the nose weather radar and side floats. Starting in 2007, the People's Liberation Army Air Force (PLAAF) also acquired dozens of upgraded Z-8Ks and Z-8KAs for conducting SAR missions; these were equipped with a FLIR turret and a searchlight underneath the cabin, plus a hoist and a flare dispenser.

China has also developed a domestic civil helicopter variant of the Z-8, which is marketed as the Avicopter AC313. The AC313 has a maximum takeoff weight of 13.8 tonnes, is capable of carrying up to 27 passengers, and has a maximum range of 900 km (559 miles).

After the 2008 Sichuan earthquake, Z-8 helicopter production received a massive boost as the event had proved the helicopter's value in humanitarian missions. New engine acquisition and design changes were implemented in order to iron out some of known existing issues which had affected the Z-8 for decades. The Chinese People's Armed Police ordered 18 Z-8 helicopters; by 2013, at least five helicopters had been delivered, the majority of these having been assigned to forestry fire fighting units. During subsequent earthquake relief operations, Z-8 helicopters have been deployed to perform rescue and logistical missions.

In 2018, the PLA Army Aviation announced that it would begin phasing out its fleet of Z-8 helicopters due to low performance and high maintenance requirements, even though some examples have only been in service for 6 years, the Z-8s will likely to be replaced by the Harbin Z-20 medium lift helicopter.

France

In October 1965, the SA 321G ASW helicopter joined the French Naval Aviation (Aeronavale). Apart from ship-based ASW missions, the SA321G also carried out sanitisation patrols in support of Redoutable-class ballistic missile submarines. Some aircraft were modified with nose-mounted targeting radar for 'Exocet' anti-ship missiles. Five SA321GA freighters, originally used in support of the Pacific nuclear test centre, were transferred to assault support duties.

In 2003, the surviving Aeronavale Super Frelons were assigned to transport duties, including commando transport, VertRep and SAR.

The SA321G Super Frelon served with Flotille 32F of the French Aviation navale, operating from Lanvéoc-Poulmic in Brittany in the Search and Rescue role. They were retired on 30 April 2010, replaced by two Eurocopter EC225 helicopters purchased as stop-gaps until the NHIndustries NH90 came into service in 2011–12.

Iraq

Starting in 1977, a total of 16 Super Frelons were delivered to the Iraqi Air Force; equipped with radar and Exocet missiles, the Iraqi models were designated as the SA 321H. These rotorcraft were deployed in the lengthy Iran–Iraq War and during the 1991 Gulf War, in which at least one example was destroyed.

During the Iran–Iraq War, Iraq started using Super Frelon and its other newly purchased Exocet-equipped fighters to target Iranian shipping in Persian Gulf in an event now known as the Tanker War. Two of the Iraqi Super Frelons were downed by Iranian fighters, one by a long-range shot of AIM-54A Phoenix by an F-14 Tomcat (during Operation Pearl) while under way over Persian Gulf, and one by an AGM-65A Maverick fired from an Iranian F-4 Phantom in July 1986, while attempting to take off from an oil rig.

Israel

An Israeli Air Force Super Frelon at the Air Force Museum in Hatzerim

Israel placed an order for six SA 321K Super Frelons in 1965 to equip the Israeli Air Force with a heavy lift transport capability. The first of these helicopters arrived on 20 April 1966, enabling the inauguration of 114 Squadron, which operated the type out of Tel Nof. An additional six Super Frelons were ordered during the following year.

The Israeli military had initially hoped to use the Super Frelons for deploying Panhard AML-90 light armoured cars in support of airborne operations, but this concept was dropped when tests revealed the helicopter was incapable of handling the vehicle's combat weight. A total of four helicopters had arrived by the start of the 1967 Six-Day War, during which they flew 41 sorties. Israeli Super Frelons saw extensive service during the War of Attrition, participating in operations such as Helem, Tarnegol 53 and Rhodes.

The type was once again in service during the Yom Kippur War, following which Israel replaced the original Turbomeca Turmo engines with the 1,390 kW (1,870 shp) General Electric T58-GE-T5D engine. The Super Frelons also took part in the Israeli invasion of Lebanon in June 1982. Due to their relatively high maintenance cost and poor performance capabilities compared to the IAF CH-53s, they were eventually retired in 1991.

Libya

In 1980–1981, six radar-equipped SA 321GM helicopters and eight SA 321M SAR/transports were delivered to Libya.

South Africa

South Africa ordered sixteen SA 321L helicopters in 1965, which were delivered by 1967 and assigned to 15 Squadron of the South African Air Force (SAAF). At least two were deployed to Mozambique in support of Rhodesian military operations against insurgents of the Zimbabwe African National Liberation Army between 1978 and 1979. Others were mobilised for evacuating South African paratroops from Angola during Operation Reindeer.

In August 1978, the South West African People's Organization sparked a major border incident between South Africa and Zambia when its guerrillas fired on an SAAF Super Frelon landing at Katima Mulilo from Zambian soil. The South Africans retaliated with an artillery strike, which struck a Zambian Army position.

Syria

In October 1975, it was widely reported that Syria had ordered fifteen unspecified Super Frelons from France as part of an arms deal funded by Saudi Arabia. While the Syrian Air Force did issue a requirement for fifteen of the specific aircraft, and recommended purchasing up to fifty, by 1984 the sale had still not materialized.

Variants

A Super Frelon loading and about to take off from the flight deck of the aircraft carrier Clemenceau
A Super Frelon of the 32F wing, landing on Ouragan
A South African Air Force SA 321L
Changhe Z-8L with its widened airframe
SE.3200 Frelon
Prototype transport helicopter powered by three 597 kW (800 hp) Turbomeca Turmo IIIB engines driving a four-bladed rotor of 15.2 m (50 ft) diameter. Two built, the first flying on 10 June 1958.
SA 321
Preproduction aircraft. Four built.
SA 321G
Anti-submarine warfare version for the French Navy, it was powered by three Turbomeca IIIC-6 turboshaft engines; 26 built.
SA 321Ga
Utility and assault transport helicopter for the French Navy.
SA 321GM
Export version for Libya, fitted with Omera ORB-32WAS radar.
SA 321H
Export version for Iraq, it was powered by three Turbomeca Turmo IIIE turboshaft engines, fitted with Omera ORB-31D search radar, and armed with Exocet anti-ship missiles.
SA 321F
Commercial airline helicopter, powered by three Turbomeca IIIC-3 turboshaft engines, with accommodation for 34 to 37 passengers.
SA 321J
Commercial transport helicopter and accommodation for 27 passengers.
SA 321Ja
Improved version of the SA 321J.
SA 321K
Military transport version for Israel.
SA 321L
Military transport version for South Africa, fitted with air inlet filters.
SA 321M
Search and rescue, utility transport helicopter for Libya.
Changhe Z-8 [zh]
Chinese built version with three Changzhou Lan Xiang WZ6 turboshaft engines.
Changhe Z-8A
Army transport.
Changhe Z-8F
Chinese built version with Pratt & Whitney Canada PT6B-67A turboshaft engines.
Changhe Z-8AEW
Chinese AEW helicopter with retractable radar antenna, AESA radar, 360 degree coverage, redesigned nose similar to the AC313, and FLIR.
Changhe Z-8L
Chinese variant with wide-body fuselage and enlarged fuel sponsons, first spotted in January 2019. The internal width of the load area has been increased from 1.8m to 2.4 m, making it larger than old Z-8 and SA321 variants.

Operators

A Super Frelon helicopter of the 35F wing of the French Navy
Olympic Airways SA321F Super Frelon F-OCMF now preserved at The Helicopter Museum Weston-super-Mare
 China
 France
 Greece
 Indonesia
 Iraq
  • Iraqi Air Force - 10 delivered in 1980-1981 but status unknown since Gulf War and not with current fleet
 Israel
 Libya
 South Africa
 Zaire

Specifications (Naval Super Frelon)

Super Frelon
Super Frelon

Data from Jane's All The World's Aircraft 1976–77,

General characteristics

  • Crew: 5
  • Capacity:
    • 27 passengers or
    • 15 stretchers
  • Length: 23.03 m (75 ft 7 in) (overall, rotors turning)
  • Fuselage length: 19.40 m (63 ft 8 in)
  • Height: 6.66 m (21 ft 10 in)
  • Empty weight: 6,863 kg (15,130 lb)
  • Max takeoff weight: 13,000 kg (28,660 lb)
  • Fuel capacity: 3,975 L (1,050 US gal; 874 imp gal) (normal)
  • Powerplant: 3 × Turboméca Turmo IIIC turboshafts, 1,160 kW (1,550 shp) each
  • Main rotor diameter: 18.90 m (62 ft 0 in)
  • Main rotor area: 280.6 m (3,020 sq ft)

Performance

  • Cruise speed: 249 km/h (155 mph, 134 kn) at sea level
  • Never exceed speed: 275 km/h (171 mph, 148 kn)
  • Range: 1,020 km (630 mi, 550 nmi)
  • Endurance: 4 hr
  • Service ceiling: 3,150 m (10,330 ft)
  • Rate of climb: 6.66 m/s (1,312 ft/min)

Armament

  • 4× homing torpedoes in the ASW role or
  • 2× Exocet missiles in the anti-ship role

See also

Related development

Aircraft of comparable role, configuration, and era

Related lists

References

Citations

  1. ^ Stevens 1964, p. 55.
  2. Stevens 1964, p. 58.
  3. Stevens 1964, pp. 55–56.
  4. Taylor 1966, p. 63.
  5. ^ Stevens 1964, p. 56.
  6. Stevens 1964, pp. 56–57.
  7. ^ Stevens 1964, p. 57.
  8. "AC313 Civil Helicopter". AirForceWorld.com. Archived from the original on 9 December 2011. Retrieved 5 April 2011.
  9. "Z8 Helicopter production boost from 2008". AirForceWorld.com. Archived from the original on 27 October 2014. Retrieved 5 October 2014.
  10. 曾思敏 (22 March 2018). "再见，直8！". 解放军报社南部战区分社. Retrieved 17 April 2018.
  11. Grolleau 2009, pp. 56–60.
  12. Grolleau 2010, p. 12.
  13. Williams, Anthony G.; Gustin, Emmanuel (2004). Flying Guns of the Modern Era. Marlborough: Crowood Press. p. 172. ISBN 9781861266552.
  14. Farrokh, Kaveh (2011). Iran at War, 1500–1988. Oxford: Osprey Publishing. p. 638. ISBN 9781780962214.
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  16. "The Israel Digest of Press and Events in Israel and the Middle East." Archived 2018-03-20 at the Wayback Machine The Israel Digest, 1966. Collected Issues Volumes 9–10.
  17. ^ Norton, Bill (2004). Air War on the Edge: A History of the Israel Air Force and its Aircraft since 1947. Midland Publishing. pp. 212–216. ISBN 1-85780-088-5.
  18. Donald and Lake 1996, p. 16.
  19. ^ Baxter, Peter (February 2013). SAAF's Border War: The South African Air Force in Combat 1966–89. Solihull: Helion and Company Ltd. p. 24. ISBN 978-1908916235.
  20. ^ Steenkamp, Willem (2006). Borderstrike! South Africa Into Angola 1975–1980 (2006 ed.). Just Done Productions. pp. 132–226. ISBN 1-920169-00-8.
  21. The Syrian Arab Republic: a handbook. Anne Sinai, Allen Pollack, 1976. p. 101.
  22. Hewish, Mark. Air Forces of the World: An Illustrated Directory of All the World's Military Air Powers. New York: Simon & Schuster, 1979. ISBN 0-671-25086-8. pp. 155–156.
  23. "Chinese Military Aviation | China Air Force". Archived from the original on 13 March 2012. Retrieved 2012-03-19.
  24. Tate, Andrew (21 January 2019). "Image emerges of Z-8G helicopter variant". Jane's 360. London. Archived from the original on 21 January 2019. Retrieved 21 January 2019.
  25. Rupprecht, Andreas (21 August 2020). "Update: Images show wide-body variant of Z-8G helicopter undergoing load-carrying trials". Janes.
  26. ^ "World Air Forces 2013" (PDF). Flightglobal Insight. 2013. Archived (PDF) from the original on 16 December 2012. Retrieved 7 March 2013.
  27. "World Air Forces 2022". Flightglobal. 2022. Retrieved 16 July 2022.
  28. "World's Air Forces 1990 pg. 50". flightglobal.com. Archived from the original on 30 July 2013. Retrieved 7 March 2013.
  29. "Aéronautique Navale". Archived from the original on 6 December 2012. Retrieved 7 March 2013.
  30. "V/STOL 1970". flightglobal.com. Archived from the original on 30 July 2013. Retrieved 7 March 2013.
  31. "Olympic Airlines Sud Aviation SA-321 Super Frelon F-OCMF". airplane-pictures.net. Archived from the original on 24 December 2013. Retrieved 7 March 2013.
  32. ^ "SA321J Super Frelon - Jejak Sejarah Helikopter Angkut Berat TNI AU dan Pelita Air Service". Indomiliter.com (in Indonesian). 2019-12-09. Retrieved 2019-12-10.
  33. "Al Quwwa al Jawwiya al Iraqiya". Archived from the original on 24 December 2013. Retrieved 7 March 2013.
  34. "SE3210 Super Frelon in Al Quwwa al Jawwiya al Iraqiya". Retrieved 6 April 2023.
  35. "World's Air Forces 1981 pg. 349". flightglobal.com. Archived from the original on 30 July 2013. Retrieved 7 March 2013.
  36. "Heil Ha'Avir". Archived from the original on 24 December 2013. Retrieved 7 March 2013.
  37. "World's Air Forces 1981 pg. 359". flightglobal.com. Archived from the original on 18 February 2013. Retrieved 7 March 2013.
  38. "World's Air Forces 1997 pg. 53". flightglobal.com. Archived from the original on 30 July 2013. Retrieved 7 March 2013.
  39. "Suid-Afrikaanse Lugmag". Archived from the original on 11 September 2014. Retrieved 7 March 2013.
  40. Taylor 1976, pp. 40–41.

Bibliography

  • Donald, David and Jon Lake. Encyclopedia of World Military Aircraft. London: Aerospace Publishing, Single Volume Edition, 1996. ISBN 1-874023-95-6.
  • Grolleau, Henri-Paul. "French Navy Super Hornets". Air International, May 2009, Vol 76 No. 5. Stamford, UK:Key Publishing. ISSN 0306-5634. pp. 56–60.
  • Grolleau, Henri-Pierre. "Hello EC225, Goodbye Super Frelon". Air International, June 2010, Vol 78 No. 6. UK:Key Publishing. ISSN 0306-5634. p. 12.
  • Roux, Robert J. (November 1970). "Les records de vitesse du Super Frélon" [The Super Frélon's Speed Records]. Le Album de Fanatique de l'Aviation (in French) (16): 27–29. ISSN 0757-4169.
  • Stevens, James Hay. "Super Frelon: Western Europe's Most Powerful Helicopter". Flight International, 9 July 1964. pp. 55–59.
  • Taylor, John W.R. Jane's All The World's Aircraft 1966–1967, London: Sampson Low, Marston & Company, 1966.
  • Taylor, J.W.R. Jane's All the World's Aircraft 1976–77. London:Macdonald and Jane's, 1976. ISBN 0-354-00538-3.
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