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Japan's Imperial Navy flag

Aichi H9A1 flying boat, Navy Type 2 Training Flying Boat Model 11

Photos

  • Aichi H9A-1 flying boat

Design

The Imperial Japanese Navy told Aichi in January 1940 to build a flying boat trainer. Morishige Mori designed the H9A1 between May and December 1940.

Construction

The H9A1 was of an all metal frame with allow, ply, and fabric coverings.

Crew and Students

There was room for three students in addition to the pilot, co-pilot, observer, flight engineer, and radio operator.

Armament Training

There were two 7.7 mm machine guns, one in each of the bow and dorsal positions for training. For depth charge training there was room for two.

Prototype

The first prototype was flown in September 1940. The flying and alighting characteristics were found to be lacking. To fix these problems the engines were positioned lower in the wings, flaps modified, and the span and wing area were increased.

Production

  • Aichi H9A1 prototypes: 3
    • Manufacturer: Aichi Kokuki K.K. at Eitoku
    • Production: 1940
  • Aichi H9A1, Navy Type 2 Training Flying Boat Model 11: 28
    • Manufacturer: Aichi Kokuki K.K. at Eitoku (24), Nippon Hikoki K.K. Service (4)
    • Production: 1942 - 1943 (Aichi), 1944 (Nippon)

Variants

  • Aichi H9A1 prototypes:
  • Aichi H9A1, Navy Type 2 Training Flying Boat Model 11:

Usage

Used to train flying boat crews for the Kawanishi H8K.

Specifications

  H9A1 Prototype
Type Training Flying Boat
Crew 5
Students 3
Engine (Type) 2: Nakajima Kotobuki 41 Kai 2
Cylinders Radial 9
Cooling Air
Net HP 710 each
Propeller blades 2 wood
Dimensions  
Span 69' 10 25/32"
21 m
Wing area 630.978 sq ft
58.62 sq m
Armament  
Bow 1: 7.7 mm Type 92
Dorsal 1: 7.7 mm Type 92
Bombs or Depth Charges 2: 551 lb
2: 250 kg
  H9A1
Type Training Flying Boat
Crew 5
Students 3
Engine (Type) 2: Nakajima Kotobuki 42 or 43
Cylinders Radial 9
Cooling Air
Net HP 710 each
Propeller blades 3
Dimensions  
Span 78' 8 7/8"
24 m
Length 55' 7 5/16"
16.95 m
Height 17' 2 11/16"
5.25 m
Wing area 630.978 sq ft
58.62 sq m
Weight  
Empty 10,803 lb
4,900 kg
Loaded 15,432 lb
7,000 kg
Performance  
Speed at 9,845' / 3,000 m 197 mph
171 knots
Speed - Cruising at 3,280' / 1,000 m 138 mph
120 knots
Climb to 9,845' / 3,000 m 11 minutes 14 seconds
Service ceiling 22,245' / 6,780 m
Range 1,335 statute miles
1,160 nautical miles
Armament  
Bow 1: 7.7 mm Type 92
Dorsal 1: 7.7 mm Type 92
Bombs or Depth Charges 2: 551 lb
2: 250 kg

Sources:

  1. Japanese Aircraft of the Pacific War, René J Francillon, 1970
20th Century American Military History Crucial Site