The U.S. Navy contacted Kaman to design and built a tilt-wing vertical take-off and landing (VTOL) craft. In order to get the project done in a minimal amount of time it was decided to use a Grumman JRF-5 "Goose" amphibious airplane as the fuselage which served the purpose for this application. The tilt-wing was built by Kaman and would rotate to a maximum 50 degree position.
This test craft was completed in late 1959 and was run through some tethered and wind tunnel tests but was never test flown and the project was cancelled in 1962. In 1989, 27 years later, this same concept and design would reappear on the Bell Boeing V-22 "Osprey" which is in use today with the U.S. Air Force and Marine Corps.