The Alouette II is a light helicopter originally manufactured by Sud Aviation and later Aérospatiale, both of France. The Alouette II was the first production helicopter to use a gas turbine instead of a conventional heavier piston engine.
It was mostly used for military purposes in observation, photography, air/sea rescue, liaison and training but it has also carried anti-tank missiles and homing torpedoes. As a civilian helicopter it was used for casualty evacuation (with two external stretcher panniers), crop-spraying and as a flying crane (with a 500 kg external sling load).
Although Sud-Est's previous helicopter design, the SE 3120 Alouette, broke helicopter speed and distance records in July 1953, it was too complex an aircraft to market successfully. With the records falling, the French government started showing interest but with their financial backing the state gave an ultimatum that within 2 years a helicopter had to be in production otherwise all activities around rotary wings would cease. SNCASE came up with 7 turbo-engine helicopters designs: X.310A - X.310G. Earlier Joseph Szydlowski, the founder of Turboméca had successfully managed to develop the Artouste, a 260 hp (190 kW) single shaft turbine engine derived from his OrédonSE 3130 Alouette II. turbine. The X.310G design was chosen and together with the Artouste engine was fast tracked towards production as the
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