The Curtiss SB2C Helldiver was an American military carrier scout and dive bomber developed to replace the Douglas SBD Dauntless. Its introduction was delayed by serious technical problems, but improved versions became standard equipment in the U.S. Navy's later wartime carrier air groups.[1][2]
A difficult introduction
The Navy contracted for the new aircraft in 1939, and the prototype first flew on 18 December 1940. Curtiss had to resolve a succession of faults before the design could become an effective fleet aircraft. Hydraulic equipment and arresting gear were among the troublesome systems, giving the Helldiver a poor reputation before widespread combat employment.[1][2]
Initial squadron deliveries began in December 1942. The long interval between the original contract and service entry illustrates the difficulty of introducing a larger, more capable carrier bomber while meeting the practical demands of deck operations and landing aboard ship.[1][2]
Armament and successive versions
A Wright R-2600 radial engine powered the Helldiver. Its offensive weapons could be carried in an internal bomb bay and on external wing racks. Early aircraft used wing-mounted machine guns; the SB2C-1C introduced two 20 mm cannon, while rear-facing flexible guns protected the aft sector.[1]
Later versions incorporated further changes. The SB2C-4 used perforated dive flaps, and the SB2C-5 added fuel capacity and improvements to the cockpit and fuselage. These developments addressed both combat capability and the practical experience accumulated with preceding production models.[1]
Production beyond Curtiss
Canadian manufacturers also built Helldivers, using the SBF and SBW designations. The related land-based A-25A was procured for the U.S. Army but did not see combat; examples were used for training. By the final Navy delivery in October 1945, the programme had produced thousands of aircraft across its several manufacturers and designations.[1]