Curtiss XF8C Helldiver

The Curtiss XF8C was the prototype of the Helldiver, a two-seat fighter and dive bomber developed for the U.S. Navy and Marine Corps in the late 1920s. First flown in 1928, it was among the first purpose-built dive bombers in American service, combining the agility of a fighter with the ability to deliver bombs in a steep dive. The airframe was built around a welded steel-tube fuselage with fabric-covered wooden wings, and the XF8C-2 introduced the 450-horsepower Pratt & Whitney R-1340 Wasp radial engine that powered the production versions.

Armament typically comprised two fixed forward-firing machine guns plus a flexible gun for the observer, with provision for bombs under the wings or fuselage. The Helldiver served with Marine Corps units and helped establish dive bombing as a core U.S. naval tactic, lending its name to a long line of later Curtiss aircraft.