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Dr. George A. Spratt and George G. Spratt



Spratt's "Turntable Wing"




A website devoted to the work of the father and son team of Dr. George A. Spratt and George G. Spratt can be found at the link shown here. The site is a magnificent archival record of the work of two aviation pioneers. There is a video of their car/plane at that site, and it must surely be the oldest surviving movie of a roadable aircraft. The pictures shown here are from that movie. The images are somewhat faded and also somewhat confusing. The pilot is preparing for flight in his very small light aircraft. He is parked in front of another more substantial airplane, and it takes some study to determine the features of the Spratt vehicle. It is worth the trouble though, because the Spratt "Turntable Wing" is most ingenious.



http://www.georgespratt.org


SprattCarPlane

This design was one of the earlier attempts to build a dual purpose vehicle, but it was a successful design. It did fly, and it was driven down a road, although it would probably be more correct to say it was "taxied" down the road. The propeller was the motive power when the machine was used as a land vehicle. The engine and pusher propeller were mounted aft of the wing in the center of the fuelage, so pedestrians would have some protection from the rotating prop.


SprattCarPlane

The unique feature was its "rotary" wing. It was not rotary in the sense that a rotary wing is now used in a helicopter or a gyroplane. It was rotary in the sense that the wing was supported on a centerpost. It was manually turned, then secured to a position along the top of the fuselage when the machine was used on a road. For flight purposes, the wing was turned and secured at 90 degrees to the fuselage. Perhaps it could have been called a "Rotary Wing With A Twist".


SprattCarPlane


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12/15/02