World War II Vehicles, Tanks and Airplanes, picture of P-51 Mustang
World War II Vehicles, Tanks and Airplanes, picture of T-34/85
World War II Vehicles, Tanks and Airplanes, picture of Fw-190
World War II Vehicles, Tanks and Airplanes, picture of Churchill
wwiivehicles.com ©2016
Search:
Japan's Imperial Navy flag

Japan's Nakajima B6N Tenzan ("heavenly mountain", "mountain of the sky") torpedo bomber
Allied code name: Jill

Photos

Nakajima B6N, "Jill" torpedo bomber:
Japan's Nakajima B6N, "Jill" torpedo bomber

Design

In 1939 the Nakajima B6N was designed. This was to replace the B5N.

The B6N was similar to the B5N but had more power and torque delivered from the engine.

Prototype

The prototype of the B6N first flew in early 1941. There were difficulties during the carrier trials. The vertical tail surface was moved to counteract the torque from the engine. Directional stability was poor.

Production

  • Prototypes: 2
  • Nakajima B6N1: 133
  • Nakajima B6N2: 1,133
  • Total: 1,268
    • Manufacturer: Nakajima Hikoki K.K.
  • Nakajima B6N3 prototype: 2

Variants

  • Prototype: Had Nakajima Mamoru radial engine.
  • Nakajima B6N1: Had a Nakajima Mamoru 11 radial engine (1,870 HP).
  • Nakajima B6N2: The Mamoru engine production was suspended so the Mitsubishi Kasei 25 engine was used (1,850 HP). Tail wheel was fixed. Appeared in late 1943.
  • Nakajima B6N2a: Have 13 mm MG in the rear cockpit.
  • Nakajima B6N3: Undercarriage was made stronger. Larger wheels.

Usage

The B6N was put into service until late 1943.

Deployed to Carriers

The B6Ns were first deployed to the aircraft carriers Shokaku, Taiho, Hiyo, Junyo, and Zuikaku.

Philippine Sea Battle

They took part in the battle of the Philippine Sea in June 1944. Many B6Ns were lost when three of the carriers were sunk.

Battle of Leyte Gulf

The B6Ns took part in the Battle of Leyte Gulf, primarily from land based units.

Specifications

  Nakajima B6N
Type Carrier torpedo bomber
Crew 3
Engine (Type)  
Cylinders  
Cooling  
Net HP  
Propeller blades  
Dimensions  
Span  
Length  
Height  
Wing area  
Weight  
Empty  
Loaded  
Performance  
Speed  
Cruising speed  
Climb  
Service ceiling  
Range  
Maximum range  
Armament  
Rear cockpit 1: 7.7 mm MG
OR 1: 13 mm MG
Ventral turret 1: 7.7 mm MG
Torpedo 1
OR  
Bombs 1,764 lb
800 kg
  Nakajima B6N1
Type  
Crew  
Engine (Type) Nakajima NK7A Mamoru 11
Cylinders Radial 14
Cooling  
Net HP 1,870
Propeller blades 4
Dimensions  
Span  
Length  
Height  
Wing area  
Weight  
Empty 7,105 lb
3,223 kg
Loaded 12,456 lb
5,650 kg
Performance  
Speed  
Cruising speed  
Climb  
Service ceiling  
Range  
Maximum range  
Armament  
  Nakajima B6N2
Type Torpedo bomber
Crew 3
Engine (Type) Mitsubishi MK4T Kasei 25 piston
Cylinders Radial, Radial 14
Cooling Air
Net HP 1,850
Propeller blades 4
Dimensions  
Span 48' 10", 48' 10 3/8" , 48' 10.5"
14.89 m
Length 35' 7", 35' 7.5", 35' 7.75"
10.86 m, 10.87 m
Height 12' 5 1/8", 12' 5.5", 12' 6"
3.8 m
Wing area 400.42 ft2
37.2 m2
Weight  
Empty 6,636 lb
3,010 kg
Loaded 11,464 lb, 12,456 lb
5,650 kg
Performance  
Speed @ 16,075' /
4,900 m
299 mph
481 kph
Cruising speed 207 mph
333 kph
Climb 1,885'/minute
575 m/minute
Climb to 16,405' /
5,000 m
10.4 minutes
Service ceiling 29,660'
9,040 m
Range 1,085 miles, 1,892 miles
1,746 km, 1,747 km
Maximum range 1,892 miles
3,045 km
Armament 2: MG
Rear cockpit 1: 13 mm Type 2 MG
OR  
Ventral turret 1: 7.7 mm Type 97 MG
Torpedo 1: 1,764 lb
1: 800 kg
OR  
Bombs 1,764 lb
800 kg

Sources:

  1. Fighting Aircraft of World War II, Editor: Karen Leverington, 1995
  2. Aircraft of WWII, Stewart Wilson, 1998
  3. World War II Airplanes Volume 2, Enzo Angelucci, Paolo Matricardi, 1976
20th Century American Military History Crucial Site