History

The Kawasaki Ki-61 Hien (meaning "Swallow", Allied codename "Tony") was another oft-forgotten but impressive WWII Japanese brand fighter design and joined the equally impressive Kawanishi N1K1 - J Shiden - in the author's opinion. Not without early development issues, the Ki-61 remained a well-oiled killing machine, with powerful weapons, enough pilot armor and fuel, and impressive performance figures to match anything the Allies offered at the time Comparable.

Ki-61 became a design reality in 1940, the brainchild of Nobu Owada and Takeo Doi. Because of their previous design experience, which saw them work under German aircraft designer Richard Vogt, seasoned aviation insiders can easily spot the German influence on the Ki-61.

In addition, the German branding of the family of aircraft is stronger, including the licensed Daimler-Benz DB 601A, operating under the well-known Japanese brand Ha-40 of the Kawasaki brand. The prototype would be ready for test flight in 1941, and full production would begin in 1943.

From an exterior design point of view, the Ki-61 has a sleek body design. The engine was placed in front of the cockpit, which was located in the center-forward position in the upper part of the fuselage.

The wings are low-profile monoplanes with rounded edges, as are the horizontal and vertical tail surfaces that adorn the tail. Power comes from a single Kawasaki V-12 piston engine that boasts performance figures like a top speed of 367 mph, a ceiling of 16,404 feet and an equally impressive range of 1,118 miles. To the trained observer, the Ki-61 certainly bears some resemblance to other countries' aircraft designs, which are almost always likened to the German Messerschmitt Bf 109 and the American North American P-51 Mustang. match.

The nose design can easily be associated with either design, as can the location of the cockpit, the smaller tail section and the bucket under the fuselage.

The Ki-61 proved to be a worthy platform to serve until the end of the war. The system was actually one of the few Japanese aircraft capable of attacking a Boeing B-29 Superfortress at normal operating altitude, and was able to counter it with some force thanks to the Hien's powerful 4 x 20mm artillery package.

The Kawasaki Ki-61 Hien, who joined the ranks of capable fighters in World War II, is sure to be a noteworthy mention in any discussion - at least it deserves the title of one of the better conflict fighters in the Japanese brand. About 3,000 Hiens in various forms were produced.

Specification

Basic

Year:
1943
Status:
Retired, out of service
Staff:
1

Production

[3,028 units]:
Kawasaki - Japan

Roles

- Fighter

- Intercept

Dimensions

Length:

8.94m

Width:

39.37 ft (12 m)

Height:

3.7m

Weight

Curb Weight:

2,630 kg

MTOW:

7,650 lb (3,470 kg)

(difference: +1,852 pt)

Performance

1 x Kawasaki Ha-40 V-12 piston engine, 1,180 hp.

Performance

Maximum Speed:

367 mph (590 km/h; 319 knots)

Service Limit:

32,808 ft (10,000 m; 6.21 mi)

Maximum range:

1,118 miles (1,800 km; 972 nautical miles)

Rate of climb:

714 m/min (2,343 ft/min)

Armor

Default:

2 x 20mm Ho-5 cannons in the nose

2 x 12.7mm Type 1 machine guns on the wings

Changes

Ki-61 - name of the basic series

Ki-61-I - first production aircraft; equipped with 4 x 12.7 mm machine guns.

Ki-61-I KAIc - In addition to the standard 4 x 12.7mm machine guns on the wings, the nose is armed with 2 x 20mm cannons.

Ki-61-I KAId - Limited production model; equipped with 2 x 30mm cannons instead of 4 x 12.7mm wing cannons.

Ki-61-II - "Improved" Ki-61-I model; equipped with 1,500 hp Kawasaki Ha-140 engine; equipped with 4 x 20mm cannons.

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