Design and Development
In the late 1930s, Vought engineer Rex B. Beisel was tasked with designing an observation monoplane aircraft for the U.S. Navy suitable for a multitude of tasks including directing battleship fire. In replacing the standard biplane observation aircraft with a more modern monoplane design, Beisel incorporated innovations becoming the first production type to be assembled with spot-welding, a process Vought and the Naval Aircraft Factory jointly developed to create a smooth fuselage that resisted buckling and generated less drag. Beisel also introduced high-lift devices, spoilers and in a unique arrangement, deflector plate flaps and drooping ailerons located on the trailing edge of the wing were deployed to increase the camber of the wing and thus create additional lift.
For combat missions, the pilot had a .30-caliber machine gun while the radio operator/gunner manned another .30-caliber machine gun (or a pair) on a flexible ring mount. The aircraft could also carry two 100 lb bombs or two 325 lb depth charges. Additionally, the "Kingfisher", as it was designated, served as a trainer in both its seaplane and landplane configurations.
Beisel’s first prototype flew in 1938, powered by an air-cooled, 450 hp Pratt & Whitney R-985-4 Wasp radial engine.
Read more about this topic: Vought OS2U Kingfisher
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