Charles Huron Kaman (/kəˈmɑːn/ kə-MAHN; June 15, 1919 – January 31, 2011)[1] was an American aeronautical engineer, businessman, inventor, and philanthropist, known for his work in rotary-wing flight[2] and also in musical instrument design via the Kaman Music Corporation.

He later attended Catholic University of America, gaining an engineering degree magna cum laude in 1940.

[2] The Kaman K-225, first flown in 1951, also used intermeshing rotors with servo-flap control and was the world's first helicopter to be powered by a gas turbine.

[2] Kaman was an aficionado of the guitar, and in 1966, he founded Ovation Instruments.

[2] His other honors included: 13 < https://airandspace.si.edu/collection-objects/kaman-k-225 (retrieved 7/5/2018) U.S. patent 2,668,595 — Rotor Control Mechanism for Aircraft of Rotary Wing Type