|Primary user||IJN Navy Air Service (Intended)|
|Number built||2 Prototypes
|Developed from||Aichi D3A|
The Yokosuka Myojo (ビーナス "Venus"?) was a Japanese two-seat dive bomber/trainer designed and built by the Yokosuka Naval Air Technical Arsenal. Derived from the Aichi D3A, it was made from nearly entirely of wood due to shortage of materials. Only five aircraft were built.
Design and development
The D3Y was a two-seat bomber trainer constructed of wood, so as not to use more valuable materials. It was based on the successful Aichi D3A, with design starting in late 1942. Like the D3A, it was a two-seat low-winged monoplane with a fixed tailwheel undercarriage. To allow construction by unskilled workers, the elliptical wing and rounded tail of the D3A was replaced by straight tapered alternatives, while the fuselage was lengthened to improve stability. Two prototypes were built during 1944, these proved heavier than expected. Three production aircraft, which were redesigned to save weight, were completed for the Imperial Japanese Navy Air Service before the end of the war, designated the Navy Type 99 Bomber Trainer Myojo Model 22.
- Aichi D3A2-K
- (Navy Type 99 Bomber Trainer Model 12) The bomber trainer version of the D3A retaining the metal airframe and general design features.
- A two seat wooden dive-bomber trainer. Powered by a 970 kW (1,300 hp) Mitsubishi Kinsei 54 radial engine, based on the Aichi D3A2-K with signifiacant changes to allow production in wood. Two prototypes and three production aircraft built.
- Single seat suicide attack derivative of D3Y1 with jettisonable undercarriage, powered by a 1,160 kW (1,560 hp) Mitsubishi Kinsei 62, armed with two 20 mm (0.787 in) Type 99 cannon in the engine cowling and one 1,800 lb (800 kg) bomb. Later redesignated D5Y1 Myojo Kai the prototype was not completed.
- D5Y1 Myojo Kai
- The D3Y2-K re-designated
- Navy Experimental Bomber Trainer Myojo
- Long designation for the two prototype D3Y1-K aircraft built at the yokosuka arsenal.
- Navy Type 99 Bomber Trainer Myojo Model 22
- Long designation for the three production D3Y1-K aircraft, built by Matsushita Koku Kogyo K.K. (Matsushita Air Industries Co.).
- Navy Special Attacker Myojo Kai
- Long designation for the D3Y2-K / D5Y1 suicide bombers
- Crew: Two (pilot and gunner)
- Length: 11.215 m (36 ft 9½ in)
- Wingspan: 14.00 m (45 ft 11⅛ in)
- Height: 4.185 m (13 ft 8¾ in)
- Wing area: 32.8 m² (353 ft2²)
- Empty weight: 3,200 kg (7,055 lb)
- Max. takeoff weight: 3,650 kg (8,047 lb)
- Powerplant: 1 × Mitsubishi Kinsei 44, 798 kW (1,070 hp)
- 2 × fixed, forward-firing 20 mm Type 99-1 cannon in Engine Cowling.
- 1 × flexible, rearward-firing 7.7 mm (0.303 in) Type 92 machine gun
- 1 × 800kg (1764 lb) for Kamikaze Operations
- Related lists
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