World War II Database

The N1K Kyofu ("Mighty Wind") fighters were offensive weapons designed to sit atop floats, providing capability to cover ground advances without needing airfields. The design work began in Sep 1940 as the Japanese Navy issued the request, with the intention to use such aircraft for the southward expansion. On 6 May 1942, the prototype flew atop of one primary float and two auxiliary ones. The response from the test pilot was positive, noting it was easy to fly and rather maneuverable. Service trials began in Aug 1942, and they were delivered to the Navy in Jul 1943 in extremely limited numbers. They were assigned the Allied codename "Rex".

Japan had reached their greatest reach of offensives by 1943, however, and had fell into a defensive stance, and N1K fighters never had a chance to fill the offensive roles they were designed for. Instead, they were assigned as interceptors based out of Balikpapan, Borneo. Though capable as floatplane fighters, floatplanes were not meant to fly against fighters. Consequently, production on the N1K ceased in Mar 1944 after a limited production number of only 89.

The N1k was too solid a design to abandon, however. In early 1944, the N1K-J Shiden ("Violet Lightning") variants entered production. The floats were removed from the aircraft, replaced with long landing gears. Combat flaps that were automatically adjusted during different flight conditions were also installed, which were an innovative technological revolution at the time, allowing the pilots to deal with one less thing during stressful combat situations. Reborn as true fighters, aircraft of this new generation of the N1K design soon proved to be highly effective against American fighters. They deployed in the Philippines, Formosa, and Okinawa in an attempt to stop the American juggernaut, though reliability issues due to a rushed production time table haunted pilots and mechanics alike. Before the end of the Pacific War, 1007 N1K1-J and a handful of the upgraded N1K2-J fighters were produced.

SPECIFICATIONS

N1K1

Machinery	One Mitsubishi MK4E Kasei 15 14-cylinder air-cooled radial engine rated at 1,530hp
Armament	2x7.7mm Type 97 machine guns, 2x20mm Type 99 Model 1 cannon, option 2x30kg bombs
Span	9.99 m
Length	9.99 m
Height	4.75 m
Wing Area	23.50 m²
Weight, Empty	2,752 kg
Weight, Loaded	3,500 kg
Weight, Maximum	3,712 kg
Speed, Cruising	486 km/h
Service Ceiling	10,560 m
Range, Normal	1,062 km
Range, Maximum	1,674 km

N1K1-J

Machinery	One Nakajima NK9H Homare 21 18-cylinder air-cooled radial engine rated at 1,990hp
Armament	2x7.7mm Type 97 machine guns, 4x20mm Type 99 Model 2 cannons, optional 2x60kg bombs or 1 drop tank
Span	9.99 m
Length	8.90 m
Height	4.05 m
Wing Area	23.50 m²
Weight, Empty	2,897 kg
Weight, Loaded	3,900 kg
Weight, Maximum	4,321 kg
Speed, Maximum	584 km/h
Speed, Cruising	370 km/h
Service Ceiling	12,497 m
Range, Normal	1,432 km
Range, Maximum	2,542 km

N1K2-J

Machinery	One Nakajima NK9H Homare 21 18-cylinder air-cooled radial engine rated at 1,990hp
Armament	4x20mmType 99 Model 2 Mk4 cannons, 2x250kg bombs
Span	9.99 m
Length	9.30 m
Height	3.90 m
Wing Area	23.50 m²
Weight, Empty	2,656 kg
Weight, Loaded	4,000 kg
Weight, Maximum	4,860 kg
Speed, Maximum	594 km/h
Rate of Climb	9.99 m/s
Service Ceiling	1,080 m
Range, Normal	1,716 km
Range, Maximum	2,395 km

Photographs

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Visitor Submitted Comments

1. Hobilar says:
   22 Sep 2007 03:34:42 AM
   
   The N1KI-J Shiden entered service with the J.N.A.F. early in 1944, and despite troubles with its Homare engine and shortcomings resulting from the inadequate development period, it soon proved itself a redoubtable warplane, and its pilots came to look upon the formidable Grumman Hellcat as a relatively easy kill.

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