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Japan's Imperial Navy flag

Japan's Nakajima G8N Renzan (mountain range) bomber
Allied code name: Rita

Photos

  • Nakajima G8N Renzen bomber
  • Nakajima G8N1 Renzan bomber

Design

After the failure of the G5N the Imperial Japanese Navy decided to try to build another four engine bomber. It was to be able to fly deep into Allied territory to carry out its missions.

In February 1943 Nakajima was asked to come up with a design for the bomber. The bomber was to have these specifications:

  • Speed: 368 / 370 mph / 320 knots
  • Bombs: 8,000 / 8,816 lbs / 4,000 kg
  • Range: 4,600 miles / 4,605 statue miles / 4,000 nautical miles
  • Climb to 26,000' / 26,245' / 8,000 m in 10 minutes

The G8N was an all metal design.

Wings

The wings were midway up the fuselage.

Landing Gear

The G8N used a tricycle landing gear.

Defensive Armament

Armament was mounted in the sides, and in turrets located forward, in the back, in the belly, and in the tail.

Prototype

The G8N1 prototype first flew on October 23, 1944. Flight tests were good but proceeded slowly because of Allied air attacks. The 3rd prototype was destroyed on the ground by US Navy aircraft.

Production

Initially production was to make 64 bombers by September 1945. Due to shortages of strategic materials the project was cancelled.

  • Total: 4
    • Manufacturer: Nakajima Hikoki K.K. at Koizumi
    • Production: October 1944 - June 1945

Variants

  • Nakajima G8N1, Navy Experimental 18-Shi Attack Bomber Renzan (mountain range) G8N1:

Usage

After World War II

The United States conducted tests on a captured G8N after the war and found that it had good performance.

Specifications

  Nakajima G8N1
Type Bomber, Heavy Bomber
Crew 10
Engine (Type) 4: Nakajima NK9K-L Homare 24
Cylinders Radial 18
Cooling Air
Net HP 2,000 each
Propeller blades 4 metal, 4 metal constant speed
Dimensions  
Span 106' 9", 106' 9 3/32"
32.54 m
Length 75' 2 15/16", 75' 3"
22.935 m
Height 23' 7", 23' 7 15/32"
7.2 m
Wing area 1,205.553 sq ft
112 sq m
Weight  
Empty 38,360 lb
17,400 kg
Loaded - Normal 59,084 lb
26,800 kg
Loaded - Maximum 70,879 lb, 70,897 lb
32,150 kg
Performance  
Speed at 26,245' / 8,000 m 368 mph
320 knots
Speed - Cruising at 13,125' / 4,000 m 230 mph
200 knots
Climb to 26,245' / 8,000 m 17 minutes 34 seconds
Service ceiling 33,465'
10,200 m
Range 2,452 statute miles
2,130 nautical miles
Range - Maximum 4,639 miles
4,639 statute miles
4,030 nautical miles
Armament 4: MG
6: 20 mm
Turret - Dorsal 2: 20 mm Type 99
Turret - Ventral 2: 20 mm Type 99
Turret - Tail 2: 20 mm Type 99
Turret - Nose 2: 13 mm Type 2
Beam Positions 2: 13 mm Type 2
Bomb Load - Normal 4: 551 lb
4: 250 kg
Bomb Load - Maximum 8,818 lb
2: 4,409 lb
2: 2,000 kg

Sources:

  1. World War II Airplanes Volume 1, Enzo Angelucci, Paolo Matricardi, 1976
  2. Japanese Aircraft of the Pacific War, René J Francillon, 1970
20th Century American Military History Crucial Site