– FS2004 Sud Ouest SO-1221 Djinn

FS2004 Sud Ouest SO-1221 Djinn helicopter, version 2. The Djinn was the world’s first production helicopter to make use of the ‘cold jet’ principle of propulsion. The term ‘cold jet’ indicates simply that compressed air from the gas turbine engine is ducted through channels inside the rotor blades and expelled through nozzles at their tips. By Lasse Lindh.
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