330-ps-8332-111-sc-498460 16216452300 o
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330-PS-8332 (111-SC-498460): First tilt-wing aircraft. Working with the Naval Research Laboratory, this unusual-looking aircraft was the first tilt-wing model ever built and developed by Vertol Aircraft Corporation. When the wing and rotor-propellers are tilted vertically (top), the new aircraft took off and landed like a helicopter. When tilted horizontally, (bottom), it flew like an airplane. Photograph released on April 4, 1957. (1/29/2015).
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