He was born in 1919 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.
Kaman's first wife was the former Helen Sylvander. They married in 1945 and divorced in 1971.
Kaman died in Bloomfield, Connecticut, aged 91, on January 31, 2011.