STATUS: Retired, Out-of-Service
MANUFACTURER(S): Aichi Kokuki KK - Japan
OPERATORS: Imperial Japan; Indonesia
LENGTH: 33.46 feet (10.2 meters)
WIDTH: 47.18 feet (14.38 meters)
HEIGHT: 12.63 feet (3.85 meters)
WEIGHT (EMPTY): 5,666 pounds (2,570 kilograms)
WEIGHT (MTOW): 8,378 pounds (3,800 kilograms)
ENGINE: 1 x Mitsubishi Kinsei 54 radial piston engine developing 1,300 horsepower.
SPEED (MAX): 267 miles-per-hour (430 kilometers-per-hour; 232 knots)
RANGE: 840 miles (1,352 kilometers; 730 nautical miles)
CEILING: 34,449 feet (10,500 meters; 6.52 miles)
RATE-OF-CLIMB: 1,640 feet-per-minute (500 meters-per-minute)
Detailing the development and operational history of the Aichi D3A (Val) Carrier-Borne Bomber / Dive Bomber.
Entry last updated on 11/28/2018.
Authored by Staff Writer. Content ©www.MilitaryFactory.com.
The D3A series of aircraft (dubbed "Val" by the Allies) were thought to be all but extinct when the war in the Pacific began. The rude awakening came in the form of the surprise attack on Pearl Harbor in Hawaii - home to the US Navy's Pacific Fleet - as D3A's made up the principle attack air arm in that assault. Though appearing very much from the image of a bygone era of aviation, complete with a fixed undercarriage in spatted housings, the D3A was used effectively as carrier-based bombers and dive bombers in the Imperial Japanese Navy throughout the early portion of the Second World War.
Aichi (along with Nakajima and Mitsubishi) submitted their monoplane design to a 1936 Japanese Navy specification (11-Shi) for a carrier-based dive-bomber to replace the aging D1A biplane series. Only Aichi's and Nakajima's submissions were pressed for further development with the request for a full working prototype.
The initial prototype was completed in December of 1937 and first flew in 1938 and fitted with Nakajima Hikari 710 horsepower engines. Despite a poor showing, a second improved prototype was made in an attempt to address issues in stability, strength and power. The second prototype hit the mark and was selected for production over the Nakajima model. This new version from Aichi, now designated D3A1, would feature revised wings of a larger span, improved dive brakes, a 1,000 horsepower Mitsubishi Kinsei 43 radial piston engine in a redesigned cowling and improvements to maneuverability via the lengthening of the dorsal fin.
Standard armament of production models would consist of an assortment of 3 x 7.7mm machine guns. Two Type 97 Light Machine Guns were fixed to fire forward and controlled by the pilot while a single Type 92 Heavy Machine Gun was fitted in a flexible mount in the rear cockpit. As a dive bomber, the Aichi D3A could sport a single 550lb bomb under the fuselage or 2 x 130lb bombs under each wing.
Early "Vals" were flown in limited land-based operations in the Indo-China theater though the rest of the war would see them operating in unison with her Imperial Japanese Navy carrier-based counterparts. D3As, in fact, would end up being responsible for the destruction of more Allied shipping vessels than any other Axis aircraft during the war - such was the reach of this "obsolete" aircraft.
The D3A's were maintained in frontline service up until the Battle of Coral Sea which saw disastrous results for the type - effectively signaling the end of the aircraft's usefulness. Vals, therefore, were systematically phased out from much frontline action as, by 1944, the D3A was simply outclassed by the plethora of American fighters appearing throughout the theater. Many Vals therefore ended up as dual-control, two-seat trainers while some were featured in Kamikaze attacks, the latter focusing in and around the areas of Leyte and Okinawa during the final year of the war.
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Our Data Modules allow for quick visual reference when comparing a single entry against contemporary designs. Areas covered include general ratings, speed assessments, and relative ranges based on distances between major cities.
Relative Maximum Speed Rating
This entry's maximum listed speed (267mph).
Graph average of 225 miles-per-hour.
Graph showcases the Aichi D3A2 (Val)'s operational range (on internal fuel) when compared to distances between major cities.
Useful in showcasing the era cross-over of particular aircraft/aerospace designs.
Unit Production Comparison
Comm. Market HI*: 44,000 units
Military Market HI**: 36,183 units