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Charles Huron Kaman (born June 15, 1919) is an American aeronautical engineer and philanthropist, known for his work in rotary-wing flight.

Kaman was born in Washington, D.C., the son of a construction supervisor. He later attended Catholic University of America, graduating magna cum laude in 1940. Kaman's first aircraft experience was working for Igor Sikorsky. In 1945, he started his own aircraft company, Kaman Aircraft, to pursue his own designs. In January 1947, the Kaman K-125 helicopter first flew. It utilized intermeshing rotors and Kaman's patented servo-flap stability control. In 1951, the Kaman K-225 also used intermeshing rotors with servo-flap control and was the world's first helicopter to be powered by a gas turbine.

Kaman's first love was the guitar, and in 1966, he founded Ovation Instruments. The company would become the Ovation Guitar Company and developed an acoustic guitar using aerospace materials, featuring a rounded back design. He and his wife Roberta also created the Fidelco Guide Dog Foundation and developed a breed of German Shepherd to act as guide dogs.
(from Wikipedia website)

          Charles H.Kaman, founder 
                of Ovation guitars