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Japan's Imperial Navy flag

Japan's Yokosuka P1Y Ginga (milky way) attack bomber, night fighter
Allied code name: Frances

Design

The P1Y Ginga was intended to be a multirole military aircraft along the same lines as the Mosquito and Ju 88. It has much promise but the war ended before its full potential was realized.

The P1Y was to meet an Imperial Japanese Navy requirement issued in 1940.

Prototype

The first prototype to fly was in summer 1943 / August 1943. Pilots enjoyed the aircraft, but ground crews disliked its problems with the engines and hydraulic systems.

Production

  • Prototype: 6
  • Yokosuka P1Y1, Yokosuka P1Y1-S: 996
    • Manufacturer: Nakajima
    • Production: mid 1944 - ?
  • Yokosuka P1Y2, Yokosuka P1Y2-S: 96
    • Manufacturer: Kawanishi
  • Total: 1,098
    • Manufacturer: Nakajima Hikoki K.K.
    • Production: ? - October 1944 (453)

Variants

  • Prototype:
  • Yokosuka P1Y:
  • Yokosuka P1Y1 Model 11:
  • Yokosuka P1Y1a: Primarily changes in armament.
  • Yokosuka P1Y1b: Primarily changes in armament.
  • Yokosuka P1Y1c: Primarily changes in armament.
  • Yokosuka P1Y1-S: Night fighter. Four oblique firing 20 mm guns in fuselage.
  • Yokosuka P1Y2: Bomber.
  • Yokosuka P1Y2-S Kyokko ("Aurora"): Night fighter.
  • Yokosuka P1Y3: Was to be parent aircraft for the Yokosuka MXY-7 Ohka suicide rocket aircraft.
  • Yokosuka P1Y4: Better engines. Only drawing board.
  • Yokosuka P1Y5: Better engines. Only drawing board.
  • Yokosuka P1Y6: Better engines. Only drawing board.

Usage

The P1Y1 wasn't used extensively because of engine problems.

Specifications

  Yokosuka P1Y Ginga
Type Attack bomber, night fighter
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  
Nose 1: 20 mm
Rear cockpit 1: 13 mm MG
OR 2: 13 mm MG
Bombs 2,205 lb
1,000 kg
OR  
Torpedo 1
  Yokosuka P1Y1 Ginga
Type Bomber
Crew 3
Engine (Type) 2: Nakajima NK9B Homare 11
2: Nakajima Nk9C Homare 12
Cylinders Radial 18
Cooling Air
Net HP 1,820, 1,825
Propeller blades 3
Dimensions  
Span 65' 7", 65' 7.5"
20 m
Length 49' 2", 49' 2.5"
15 m
Height 14' 1", 14' 1.25"
4.3 m
Wing area  
Weight  
Empty 16,017 lb
7,265 kg
Loaded 29,762 lb, 30,840 lb
13,500 kg
Performance  
Speed  
Speed @ 19,355' /
5,900 m
340 mph
547 kph
Cruising speed 230 mph
370 kph
Climb  
Climb to 9,840' /
3,000 m
4.3 minutes
Service ceiling 30,840'
9,400 m
Range 1,192 miles, 3,338 miles
1,918 km
Maximum range 3,337 miles
5,370 km
Armament 2: 20 mm
Bombs 2,200 lb
  Yokosuka P1Y2 Ginga
Type  
Crew  
Engine (Type) 2: Mitsubishi MK4T-A-Kasei 25a
Cylinders Radial 14
Cooling  
Net HP 1,850
Propeller blades 3
Dimensions  
Span 65' 7.5"
20 m
Length 49' 2.5"
15 m
Height 14' 1.25"
4.3 m
Wing area  
Weight  
Empty  
Loaded  
Performance  
Speed  
Cruising speed  
Climb  
Service ceiling  
Range  
Maximum range  
Armament  

Sources:

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