Yokosuka D3Y

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D3Y Myojo
Role Dive bomber
Manufacturer Yokosuka
First flight 1945
Status Cancelled
Primary user IJN Navy Air Service (Intended)
Produced 1945
Number built 2 Prototypes
3 Production
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[edit]

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.[1] 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.[2]


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.[3]
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



Specifications (D3Y1-K)[edit]

General characteristics



See also[edit]

Related lists


  1. ^ Francillon 1979, p. 469.
  2. ^ Francillon 1979, pp. 469–470.
  3. ^ Francillon 1979, pp. 470–471.
  4. ^ Climb to 6,000 m (19,700 ft): 13 min 23 s