Yokosuka E1Y
E1Y | |
---|---|
Role | Reconnaissance floatplane |
National origin | Japan |
Manufacturer | Yokosuka |
First flight | 1923 |
Introduction | 1926 |
Primary user | Imperial Japanese Navy |
Number built | 320[1] |
The Yokosuka E1Y was a Japanese floatplane of the 1920s. A single-engined biplane that was designed and developed by the Yokosuka Naval Air Technical Arsenal as a reconnaissance aircraft for the Imperial Japanese Navy, 320 were built as the Type 14 Reconnaissance Seaplane, entering service in 1925 and remained in operational service until 1932.
Development and design
In 1921, the Japanese Naval Arsenal at
Although the Type 10 was not adopted by the Japanese Navy,[2] it was again redesigned, reducing the wingspan from 16.16 m (53 ft 0¼ in) to 13.99 m (45 ft 11 in) and reducing the empty weight from 1,912 kg (4,215 lb) to 1,660 kg (3,659 lb).[3] In this form, the revised design was accepted in January 1926 as the Type 14 Reconnaissance Seaplane, later receiving the short designation E1Y.[4]
Two versions entered service in 1926, a two-seater powered by a 400 hp (300 kW)
As the Type 90-3 showed little improvement over the Type 14-2 from which it was developed, in 1931, Yokosuka developed the further refined Type 14-3 Reconnaissance aircraft, with a new tail, a geared Lorraine-Dietrich 3 engine and significantly improved performance.[5]
A total of 218 E1Y1 and E1Y2s were built by Yokosuka (23), Nakajima Aircraft Company (47) and Aichi (148). 102 E1Y3s were built by Aichi.[7]
Operational history
The E1Y1 and E1Y2 entered service in 1926, replacing Yokosuka Ro-Go Ko-Gata and
Many E1Ys were sold as civil aircraft from 1932, usually converted with a cabin for three or four passengers. Some were fitted with Napier Lion engines.[8]
Variants
- Navy Type 10 Reconnaissance Seaplane
- Prototype reconnaissance seaplane, powered by 400 hp (298 kW) Lorraine-Dietrich 1 V-12 engine but overweight. Two built.[2]
- Navy Type 10 Model A Reconnaissance Seaplane
- Revised prototype, one built.[2]
- Navy Type 10 Model B Reconnaissance Seaplane
- Further modified prototype and pre-production aircraft.[2]
- Navy Type 14-1 Reconnaissance Seaplane (E1Y1)
- Initial production version, powered by 400 hp (298 kW) Lorraine-Dietrich 1.[5]
- Navy Type 14-2 Reconnaissance Seaplane (E1Y2)
- Modified version, with new all metal floats and 450 hp (336 kW) Lorraine-Dietrich 2 W-engine.[5]
- Navy Experimental Type 14-2 Kai-1 Reconnaissance Seaplane
- an experimental version of the Type 14-2
- Navy Type 14-3 Reconnaissance Seaplane (E1Y3)
- Further improved version with new tail and improved performance.[5]
- Navy Type 14 Modified Transport Seaplane
- Civil conversion.[8]
Operators
Specifications (E1Y2)
Data from Japanese Aircraft, 1910-1941[7]
General characteristics
- Crew: 3
- Length: 10.59 m (34 ft 9 in)
- Wingspan: 14.22 m (46 ft 8 in)
- Height: 4.15 m (13 ft 7 in)
- Wing area: 54.2 m2 (583 sq ft)
- Empty weight: 1,889 kg (4,165 lb)
- Gross weight: 2,750 kg (6,063 lb)
- Powerplant: 1 × Lorraine 2W-12 water-cooled piston engine, 336 kW (451 hp)
Performance
- Maximum speed: 178 km/h (111 mph, 96 kn)
- Cruise speed: 130 km/h (81 mph, 70 kn)
- Range: 1,156 km (718 mi, 624 nmi)
- Endurance: 9 hours
- Service ceiling: 4,000 m (13,000 ft)
- Time to altitude: 3,000 m (9,800 ft) in 28 minutes 13 seconds
- Wing loading: 50.7 kg/m2 (10.4 lb/sq ft)
- Power/mass: 0.1226 kW/kg (0.0746 hp/lb)
Armament
- Guns: 1× flexibly mounted 7.7 mm machine gun
- Bombs: 2× 110 kg (240 lb) or 4× 30 kg (66 lb) bombs
See also
Related development
- Yokosuka E5Y1
Aircraft of comparable role, configuration, and era
Footnotes
- a The type number was the year of the Taishō Emperor's reign, i.e. Type 10 = 1921.[9]
References
Notes
- ^ Donald 1997, p. 922.
- ^ a b c d e Mikesh & Abe 1990, p. 272.
- ^ Mikesh & Abe 1990, pp. 272, 275
- ^ Mikesh & Abe 1990, p. 273.
- ^ a b c d e f Mikesh & Abe 1990, p. 274.
- ^ Mikesh & Abe 1990, pp. 278–279.
- ^ a b Mikesh & Abe 1990, p. 275.
- ^ a b Mikesh & Abe 1990, pp. 274–275.
- ^ Mikesh & Abe 1990, p. 2.
Bibliography
- Donald, David, ed. (1997). The Encyclopedia of World Aircraft. Leicester, UK: Blitz Editions. ISBN 1-85605-375-X.
- Mikesh, Robert; Abe, Shorzoe (1990). Japanese Aircraft, 1910-1941. London: Putnam & Company Ltd. ISBN 0-85177-840-2.