Aichi E16A
The Aichi E16A Zuiun (瑞雲 "Auspicious Cloud", Allied reporting name "Paul") was a two-seat reconnaissance seaplane operated by the Imperial Japanese Navy during World War II.
| E16A Zuiun | |
|---|---|
![]()  | |
| A E16A1 Yo-53 of the Yokosuka Kōkutai (Naval Air Group), as can be seen by its tail markings. | |
| Role | Reconnaissance Floatplane | 
| Manufacturer | Aichi Kokuki | 
| First flight | 22 May 1942 | 
| Introduction | February 1944 | 
| Primary user | IJN Air Service | 
| Produced | 1944–1945 | 
| Number built | 256[1] | 
Design and development
    
The Aichi E16A originated from a 1939 specification for a replacement for the Aichi E13A, which at that time had yet to be accepted by the Imperial Japanese Navy Air Service (IJNAS).[2] Disagreements about the requirements in the 14-Shi specification prevented most manufacturers from submitting designs, but in 1941 a new 16-Shi specification was drafted by the IJNAS around the Aichi AM-22 design which had already been made by Aichi engineers Kishiro Matsuo and Yasuhiro Ozawa.[2] The first AM-22, which first got the experimental designation Navy Experimental 16-Shi Reconnaissance Seaplane and later the short designation E16A1, was completed by May 1942 and was a conventional, low-wing monoplane equipped with two floats and had the unusual (for a seaplane) feature of being equipped with dive brakes, located in the front legs of the float struts, to allow it to operate in a secondary role as a dive bomber.
Variants
    
- E16A1 Experimental Type 16 reconnaissance seaplane (16試水上偵察機, 16-Shi Suijō Teisatsuki)
 - Initial named Experimental Type 14 two-seat reconnaissance seaplane (14試2座水上偵察機, 14-Shi 2-Za Suijō Teisatsuki). 3 prototypes produced. Mounted 1,300 hp (970 kW) Mitsubishi MK8A Kinsei 51 engine, 2 × forward-firing 7.7 mm (.303in) Type 97 machine guns, 1 × rearward-firing 7.7 mm Type 92 machine gun.
 - E16A1 Zuiun Model 11 (瑞雲11型, Zuiun 11-gata)
 - General production model. Mounted 1,300 hp (970 kW) Mitsubishi MK8N Kinsei 54 engine, 2 × forward-firing 20 mm Type 99-2 cannons, 1 × rearward-firing 13 mm Type 2 machine gun.
 - E16A2 Provisional name Zuiun Model 12 (仮称瑞雲12型, Kashō Zuiun 12-gata)
 - Initial named Zuiun Model 22. Single prototype with a 1,560 hp (1,160 kW) Mitsubishi MK8P Kinsei 62 radial engine. One plane converted from E16A1, incomplete.
 
Operators
    
- Imperial Japanese Navy Air Service
 - Naval vessel
- Battleship Ise, supplied from 634th Kōkūtai.
 - Battleship Hyūga, supplied from 634th Kōkūtai.
 
 - Air unit
- Kitaura Kōkutai
 - Yokosuka Kōkutai
 - 634th Kōkutai
 - 801st Kōkutai
 - 301st Reconnaissance Hikōtai
 - 302nd Reconnaissance Hikōtai
 
 
Specifications (E16A1 Zuiun Model 11)
    

Data from Japanese Aircraft of the Pacific War[1]
General characteristics
- Crew: 2
 - Length: 10.833 m (35 ft 6 in)
 - Wingspan: 12.81 m (42 ft 0 in)
 - Height: 4.791 m (15 ft 9 in)
 - Wing area: 28 m2 (300 sq ft)
 - Empty weight: 2,945 kg (6,493 lb)
 - Gross weight: 3,900 kg (8,598 lb)
 - Max takeoff weight: 4,553 kg (10,038 lb)
 - Powerplant: 1 × Mitsubishi MK8D Kinsei 54 14-cylinder air-cooled radial piston engine, 970 kW (1,300 hp) for take-off
 
- 895 kW (1,200 hp) at 3,000 m (9,843 ft)
 - 820 kW (1,100 hp) at 6,200 m (20,341 ft)
 
- Propellers: 3-bladed constant-speed propeller
 
Performance
- Maximum speed: 439 km/h (273 mph, 237 kn) at 5,500 m (18,045 ft)
 - Cruise speed: 333 km/h (207 mph, 180 kn) at 5,000 m (16,404 ft)
 - Range: 1,176 km (731 mi, 635 nmi)
 - Ferry range: 2,420 km (1,500 mi, 1,310 nmi)
 - Service ceiling: 10,000 m (33,000 ft)
 - Rate of climb: 10 m/s (2,000 ft/min)
 - Time to altitude: 3,000 m (9,843 ft) in 4 minutes 40 seconds
 - Wing loading: 139.3 kg/m2 (28.5 lb/sq ft)
 - Power/mass: 0.2491 kW/kg (0.1515 hp/lb)
 
Armament
- Guns: 
- 2 fixed forward-firing 20 mm (0.787 in) Type 99 Mark 2 machine guns in the wings
 - 1 flexible rearward-firing 13 mm (0.512 in) Type 2 machine gun for the observer
 
 - Bombs: 
- 250 kg (551 lb) of bombs
 
 
See also
    
Aircraft of comparable role, configuration, and era
Related lists
References
    
- Notes
 
- Francillon 1979, p. 287.
 - Francillon 1979, p. 284.
 - Bunrindō (1983), p. 110–111, p. 159–163
 - Bunrindō (1994), p. 8, p. 25, p. 71–77
 
- Bibliography
 
- Francillon, Ph.D., René J. Japanese Aircraft of the Pacific War. London: Putnam & Company Ltd., 1979. ISBN 0-370-30251-6.
 - Green, William. "Aichi E16A1 Zui-un (Paul)" War Planes of the Second World War, Volume Six: Floatplanes. London: Macdonald & Co.(Publishers) Ltd., 1962, pp. 116–118.
 - Taylor, Michael J.H. Jane's Encyclopedia of Aviation. London: Studio Editions, 1989, p. 43.
 
- Bunrindō (Japan)
- Kōku-Fan Illustrated Special, Japanese Military Aircraft Illustrated Vol. 3 "Recinnaissance/Flying-boat/Trainer/Transport", January 1983
 - Famous Airplanes of the World No. 47 "Imperial Japanese Navy Reconnaissance Seaplane", July 1994
 
 
