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Old December 8th 03, 10:21 AM
Charles Gray
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Default Bell Textron D-314 tiltrotor designs.

During the 1970's, Bell came up with a variety of Tiltrotor concepts,
including several gunship models. Does anyone know where a good place
to start looking for conceptual art or planned specifications would
be?

Also, isn't a tilt-rotor considerably less effecient than a
helicopter in vertical flight?