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Sud-Ouest Djinn
| S.O.1221 Djinn | |
|---|---|
| Type | Light helicopter |
| Manufacturer | Sud-Ouest |
| Maiden flight | 1953 |
| Primary users | French Army German Army |
| Number built | 178 |
The Sud-Ouest S.O.1221 Djinn is a French two-seat light helicopter designed and built by Sud-Ouest later Sud Aviation. The helicopter rotors were driven by compressed-air jets at then end of each blade.
Development
Experience with the earlier Ariel experimental tip jet helicopter led Sud-Ouest to develop a practical light helicopter the S.O.1221 Djinn. It did not use the same tip jet system but relied on compressed air being fed to the ends of the rotor blades. The Djinn was apart from the propulsion a conventional helicopter with a two-seat side-by-side cabin with a Turbomeca Palouste turbo-compressor behind. The aircraft had an uncovered tail-boom with a twin fins and a rudder, because of the non-torque rotor propulsion it did not need an anti-tourque tail rotor. A prototype (designated S.O.1220) first flew on 2 January 1953 it was a simple uncovered structure with an exposed seat for the pilot. This proved the viability of the propulsion system and five two-seat prototypes were then built as the S.O.1221, the first flew on 16 December 1953. Within a few days the helicopter had climbed to a altitude of 4789m (15,712 ft) to establish a record in its class.
The French Army encouraged the building of a pre-production batch of 22 helicopters for evaluation. The first pre-production aircraft flew on 23 September 1954. Three of these pre-production helicopters were acquired by the United States Army for evaluation as the YHO-1. The French Army ordered 100 helicopters and six were bought by the German Army. The French Army used the helicopter for liaison, observation, training, and with one-pilot and two external litters for casualt evacuation.
Production ended in the mid-1960s after 178 Djinns had been built, some helicopters were sold to civil operators for agricultural use fitted with chemical tanks and spray bars.
Operators
Specifications
Related development
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| Military | Air forces · Aircraft weapons · Missiles · Unmanned aerial vehicles (UAVs) · Experimental aircraft |
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| Records | Flight airspeed record · Flight distance record · Flight altitude record · Flight endurance record · Most produced aircraft |
References
- The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 2975
Lists relating to aviation | |
|---|---|
| General | Timeline of aviation · Aircraft · Aircraft manufacturers · Aircraft engines · Aircraft engine manufacturers · Airports · Airlines |
| Military | Air forces · Aircraft weapons · Missiles · Unmanned aerial vehicles (UAVs) · Experimental aircraft |
| Notable incidents and accidents | Military aviation · Airliners · General aviation · Famous aviation-related deaths |
| Records | Flight airspeed record · Flight distance record · Flight altitude record · Flight endurance record · Most produced aircraft |
| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Sud-Ouest Djinn". |
