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Sud-Aviation SA340
Sud-Aviation SA341 Gazelle
Sud-Aviation SA342 Gazelle


sa341gazelle
SA341 Gazelle


The SA 341 Gazelle all-purpose lightweight helicopter began as a proposal for a new observation helicopter for the French army. It was re-named the SA 340 soon afterwards. The Gazelle features a fully enclosed fuselage structure and, while it can be flown by a single pilot, has provision for two pilots with side-by-side seating.
The SA.340 prototype F-WOFH flew for the first time on 7 April 1967, with an Astazou UN turbine and the same transmission, landing skids, anti-torque rotor and tail plane as the Alouette. Following the first flight, development continued throughout 1967 at Sud-Aviation's factory at Marignane, near Marseille. This first aircraft utilises the tail rotor and skid of the Alouette II and the engine and transmission system of the Alouette II Astazou, but the second prototype (F-ZWRA, first flown on 17 April 1968) was representative of production SA.341's in having the Astazou IIN2 and a 'solid' vertical fin with a circular cut-out in its centre, within which its small 13-blade tail rotor rotates. The main rotor blades, made of laminated glassfibre, are of the type developed by Bolkow of Germany in collaboration with Sud-Aviation. In 1967 while still in the final design stages, Westland joined a production-sharing agreement signed on 22 February 1967 and officially confirmed on 2 April 1968, and performed final assembly of the first British military version in 1970.


The first prototype, designated SA 340.001, was flown on 7 April 1967, and the second on 12 April 1968. The first French Gazelle had a longer cabin than its predecessors, an enlarged tail unit and an uprated Astazou IIIA engine. These were followed by four pre-production SA 341 Gazelles (first flown on 2 August 1968), of which the third was equipped to British Army requirements, assembled in France, and then re-assembled by Westland in the UK as the prototype Gazelle AH.1. It was first flown on 28 April 1970.


The initial Westland-assembled Gazelles followed early in 1972 (first flown on 31 January 1972). Westland Helicopters Ltd of Weston-Super Mare in Somerset delivered 32 Gazelles to the Royal Air Force. Others served with the Army Air Corps and Fleet Air Arm.

 

west-gazell


On 14 May 1970 the first Aerospatiale-built SA 341 pre-production aircraft, in slightly modified form, established three new speed records for helicopters of its class.
Manufacture of the Gazelle began with a civil-registered aircraft on 6 August 1971.

 

sa-342m

SA-342M

 

The upgraded SA 342 first flew in 1976.


Two military models are; the SA.342L-1 for export customers, and the similar SA.342M for the French Army. Armament options include four or six HOT anti-tank missiles, a GIAT M621 20mm cannon, and machine-gun or rocket pods.


Armament which can be carried by the military versions includes machine-guns, rockets and reconnaissance flares, plus a variety of missiles, including the anti-tank HOT missile (High-subsonic Optically-guided Tube-launched).


The Gazelle has been built under licence by Egypt and Yugoslavia where the Serbs used Yugoslav-built Gazelles in the Balkan civil war during the 1990s. Soko built the Aerospatiale/Westland Gazelle helicopter under license in several versions, including Partizan, GAMA antiarmor model and HERA reconnaissance model.

 

 Aerospat-SA341-01
SA 341

 

Variants:
SA 341B Gazelle AH.1
British Army version; Astazou IIIN engine; Nightsun searchlight, Decca Doppler 80 radar and automatic chart display; first Westland-assembled example flown on 31. January 1972; entered operational service on 6 July 1974 (total 158)

SA 341C Gazelle HT.2
Fleet Air Arm training versions; Astazou IIIN engine; stability-augmentation system and a hoist incorporated; first flown on 6 July 1972 and first entered service on 10 December 1974 (total 30)

SA 341D Gazelle HT.3
RAF training version; Astazou IIIN engine; stability-augmentation system; Schermuly flares installation; first deliveries to service on 16 July 1973 (total 14)

SA 341E Gazelle HCC.4
RAF communications version; Astazou IIIN engine (total 1)

SA 341F Gazelle
Basic French army version; Astazou IIIC engine (total 166)

SA 341G Gazelle
Civil commercial version; Astazou IIIA engine; officially certificated for passenger service on 7 June 1972; subsequently became the first helicopter to obtain US approval for operations under IFR Cat.1 conditions with a single pilot; also developed into a so-called 'Stretched Gazelle', with rear section of the cabin modified to provide additional 20cm legroom for the rear passengers

SA 341H Gazelle
Military export version; Astazou IIIB engine; subject to licence-production agreement signed on 1 October 1971 with SOKO in Yugoslavia (total 112)

SA 342J Gazelle
Civil version of SA 342L; 649kW Astazou XIV engine, improved fenestron tail rotor, increased take-off weight; approved for service on 24 April 1976; deliveries commenced in 1977

SA 342K Gazelle
Military export version for 'hot and dry' areas; 649kW Astazou XIVH engine with momentum-separation shrouds over air intakes; first flown on 11 May 1973; initial sales to Kuwait.

SA 342L Gazelle
Military counterpart of SA 342J; 649kW Astazou XIV engine; adaptable for wide range of armaments and equipment, including six Euromissile HOT anti-tank missiles

SA 342M Gazelle
French army antitank version with four Euromissile HOT missiles, SFIM APX M397 stabilised sight

Specifications:


Aérospatiale SA 341 Gazelle
Engine: Turboméca Astazou III N, 584 shp
Length: 31.234 ft / 9.52 m            
Overall length: 11.97 m
Height: 9.711 ft / 2.96 m            
Rotor diameter: 34.449 ft / 10.5 m    
Empty weight: 908 kg                 
MTOW: 3748.5 lb / 1700.0 kg
Max. speed: 143 kts / 265 km/h        
Service ceiling: 16732 ft / 5100 m
Range: 351 nm / 650 km            
Crew: 1+4
Armament: ext.

Aerosatiale SA 341G Gazelle
Engines: Turbomeca Astazou IIIA, 590 hp
Disc loading: 4.26 lb/sq.ft 
Main rotor dia: 34 ft 5.5 in / 10.05m
Fuselage length: 31 ft 2 in / 9.53m
Cabin length: 7 ft 2 in / 2.20m
Cabin max width: 4 ft 4 in / 1.32m
Cabin max height: 3 ft 11.5 in / 1.21m
Cabin volume: 63.7 cu.ft / 1.80 cu.m
Baggage hold volume: 15.9 cu.ft / 0.45 cu.m
Pwr loading: 6.7 lb/hp
Max TO wt: 3970 lb / 1800 kg
Empty wt: 2022 lb / 917 kg
Equipped useful load: 1796 lb
Payload max fuel: 845 lb
Range max fuel/ cruise: 318 nm/ 2.2 hr
Range max fuel / range: 361 nm / 416 mi / 670 km / 2.6 hr
Range 1102 lb / 500 kg payload: 193 nm / 223 mi / 360 km
Service ceiling: 16,400 ft / 5000 m
Max cruise SL: 142 kt / 164 mph / 264 kph
Max range cruise: 125 kt
ROC SL: 1770 fpm / 540 m/min
HIGE: 9180 ft
HOGE: 6890 ft
Max sling load: 1540 lb
Fuel cap: 794/951 lb
Seats: 5

 

HT.Mk.3
Rotor dia: 34ft 5.5 in (10.5 m)
Max cruise: 164 mph (264 km/h)

 

AS.342L Gazelle
Engine: 1 x Turbomeca Astazou XIVM turboshaft: 640kW
Fuselage Length: 31.27 ft (9.53m)
Height: 10.43 ft (3.18m)
Rotor dia: 10.5 m    
Main rotor: three blade
Empty Weight: 2,202lbs (999kg)
Maximum Take-Off Weight: 4,409lbs (2,000kg)
Fuel cap (+aux): 240 lt (80 lt)
Maximum Speed: 165mph (265kmh; 143kts)
Maximum Range: 441miles (710km)
Rate-of-Climb: 2,400ft/min (732m/min)
Ceiling:     4300 m    
HIGE: 2315 m
HOGE: 1770 m    
Accommodation: 2 + 3
Hardpoints: 2 (with wing stubs)

AS.342L1 Gazelle
Engine: 1 x Turbomeca Astazou X1VM    
Instant pwr: 600 kW
MTOW: 2000 kg                
Payload: 700 kg
Max speed: 260 kts                
Max range: 710 km
Crew: 1                
Pax: 4

AS.342M Gazelle

 

gazelle
 

 Aerospat-SA341-ld-02

SA 341G

 

 

 

 

 

 


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