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Tachikawa Ki-94-II



Defeat in the Battle of Midway essentially left Japan without means to project their aerial power over distant territories and started the three-year long retreat towards their home islands. Since 1942, US strategic bombers began regularly raiding imperial territories, and it culminated with the raid on Tokyo on the night of 9-10 March 1945 that included 334 B-29 heavy bombers and resulted in the almost total obliteration of mostly wooden civilian structures over 40 km2 of the Japanese capital, and the death of over 100,000 people.
The Japanese army command had considered such possibilities beforehand, and the means to deter long-range bombing raids were being developed from 1942. Koku Hombu, the aviation HQ of the Imperial Army, placed an order with the Tachikawa Hikoki HK company for a high altitude interceptor that would be able to destroy enemy bombers.
The initial requirements were the fighter was supposed to have a range of 3,000 km, up to 800 km/h speed, and a pressurized cockpit. Tachikawa started the Ki-94 project that was later split into two completely different designs - the Ki-94-I and Ki-94-II.
The Ki-94-I was a large twin-boom monoplane with two tandem 18-cylinder Mitsubishi Ha-211 Ru piston engines located in the front and rear sections of the fuselage. The rear-pushing propeller was located between the tail booms. The designers expected that this scheme would provide speeds of up to 780 km/h at a 10-kilometer altitude. The Ki-94 was supposed to carry two 37-mm Ho-204 and two 30-mm Ho-155 cannons, located in the wings.
By the end of 1943, Tachikawa had a wooden model built but the Koku Hombu technical department considered it to be exceedingly difficult to produce, and the high expectations of the aircraft’s characteristics were deemed overly enthusiastic. As a result, the design was discarded and the role of the fighter-interceptor was handed over to Nakajima Ki-87, while Tachikawa focused on the sister Ki-94-II design.


Engine: 1 x Nakajima Ha-44, 1835kW
Max take-off weight: 6450 kg / 14220 lb
Empty weight: 4690 kg / 10340 lb
Wingspan: 14 m / 45 ft 11 in
Length: 12 m / 39 ft 4 in
Height: 4.65 m / 15 ft 3 in
Wing area: 28 sq.m / 301.39 sq ft
Max. speed: 712 km/h / 442 mph
Cruise speed: 440 km/h / 273 mph
Ceiling: 14680 m / 48150 ft
Range: 2100 km / 1305 miles
Crew: 1
Armament: 2 x 30mm cannons, 2 x 20mm cannons, 500kg of bombs

Tachikawa Ki-94-II



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