Aérospatiale SA 360 Dauphin

1st Flight 1972

Military Users-Royal Hong Kong Auxiliary Air Force.

Aérospatiale SA 360 Dauphin

The Aérospatiale SA 360 Dauphin was a single-engine French utility helicopter. Much of its design was originally derived from the Alouette III that the Dauphin had been developed as a successor to, and thus shares many features, such as the rotor blades of its four-bladed main rotor, with this earlier rotorcraft.

The Dauphin featured a fully enclosed cabin while could be provisioned with seating for a maximum of nine passengers.

It was fitted with a fixed tail wheel undercarriage with spatted main wheels; this arrangement was reportedly was a source of difficulties while landing on compact helipads.

Aérospatiale SA 360 Dauphin

One of the Dauphin’s more noticeable innovations over the Alouette III was the adoption of a thirteen-bladed fenestron anti-torque device embedded within its tail.

While the fenestron had been first introduced a few years earlier upon another of Aérospatiale’s rotorcraft, the Gazelle, the Dauphin’s implementation featured considerable refinement over the earlier arrangement, the direction of rotation was reversed so that the blade on the bottom was the advancing blade, the original direction having proved unfavourable when encountering the downwash of the main rotor during early testing of the Dauphin.

Testing demonstrated the fenestron to have clear performance advantages over the conventional tail rotor, leading to it being applied to numerous other rotor craft following the Dauphin as well.

Aérospatiale SA 360 Dauphin

According to aviation author J. Mac McClellan, even in its original guise, the flying qualities of the Dauphin were generally appreciated by pilots.

One small area of criticism was that pilots had to enter and exit the front seats via the main cabin, as the rotorcraft lacked forward crew doors, passengers were also inconvenienced by the presence of a sizable vertical column in the center of the cabin that accommodated the main pushrods.

These shortcomings were addressed in subsequent versions of the twin-engined Dauphin 2.

Aérospatiale SA 360 Dauphin

Specifications-

Crew: 1 or 2 pilots

Capacity: 8–9 passengers

Length: 13.20 m (43 ft 4 in) including rotor

10.98 m (36 ft) (fuselage length)

Height: 3.5 m (11 ft 6 in)

Empty weight: 1,580 kg (3,483 lb)

Max take off weight: 3,000 kg (6,614 lb)

Aérospatiale SA 360 Dauphin

Power plant: 1 × Turbomeca Astazou XVIIIA turboshaft, 783 kW (1,050 hp)

Main rotor diameter: 11.5 m (37 ft 9 in)

Main rotor area: 103.9 m2 (1,118 sq ft)

Blade section NACA 0012

Performance

Cruise speed: 274 km/h (170 mph, 148 kn)

Never exceed speed: 315 km/h (196 mph, 170 kn)

Range: 675 km (419 mi, 364 nmi) (max fuel)

Service ceiling: 4,600 m (15,100 ft)

Rate of climb: 9 m/s (1,800 ft/min)

Aérospatiale SA 360 Dauphin

Credits-

Aeroscopia Museum, Toulouse, France.

Helicopters: An Illustrated History of Their Impact-Stanley McGowen.

Jane’s pocket guide: Modern military helicopters- Tim Ripley.

Wikipedia.

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