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    Bell Model 204 / XH-40 / UH-1 Iroquois competitors, projects and modifications

    In 1955, the US Army issued a requirement for the development of a next generation gas turbine-powered medivac helicopter The winner of this competition would be awarded to Bell with their Model 204, then designated as the XH-40, and later again in 1962 it was changed to UH-1 Iroquois. I have...
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