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{{Short description|Japanese flying boat}}
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
<!-- This article is a part of [[Wikipedia:WikiProject Aircraft]]. Please see [[Wikipedia:WikiProject Aircraft/page content]] for recommended layout. -->
{|{{Infobox Aircraft Begin
{|{{Infobox Aircraft Begin
|name = H1H
|name = H1H
|image = File:15siki-hikouti.jpg
|image = File:15siki-hikouti.jpg
|caption =Late production H1H1 on a launching trolly.<ref name="Mikesh">{{cite book|last1=Mikesh |first1=Robert C. |last2=Abe |first2=Shorzoe |title=Japanese Aircraft 1910-1941 |date=1990 |publisher=Naval Institute Press Annapolis |location=Maryland 21402 |isbn=1-55750-563-2 }}</ref><ref name="Januszewski">{{cite book|last1=Januszewski |first1=Tadeusz |last2=Zalewski |first2=Kryzysztof |title=Japońskie samoloty marynarski 1912-1945 |date=2000 |location=tiel2, Lampart |isbn=83-86776-00-5 }}</ref>
|caption =
}}{{Infobox Aircraft Type
}}{{Infobox Aircraft Type
|type = Patrol flying boat
|type = Patrol flying boat
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==Design and development==
==Design and development==
Following licensed production of the Felixstowe F.5 for the Imperial Japanese Navy the company developed an improved version known as the H1H or Navy Type 15. The aircraft was built with three different engine types fitted, the Navy Type 15-I had longer span upper wings and the Navy Type 15-II had four-bladed propellers. The H1H remained in front line naval service through the 1930s.<ref name="Orbis" />
Following licensed production of the Felixstowe F.5 for the Imperial Japanese Navy the company developed an improved version known as the H1H or Navy Type 15. The aircraft was built with three different engine types fitted, the Navy Type 15-I with a wooden hull had longer span upper wings and the Navy Type 15-II had four-bladed propellers. The H1H remained in front line naval service through the 1930s.<ref name="Mikesh" /><ref name="Januszewski" /><ref name="Orbis" />


==Variants==
==Variants==
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==Specifications (H1H1)==
==Specifications (H1H1)==
[[File:Hiro_H1H_flying_boat.jpg|thumb|right|H1H2 side elevation, all-metal hull with [[Claude Dornier|Dornier]]-type external stiffeners.<ref name="Mikesh" /><ref name="Januszewski" />]]
{{aerospecs
{{Aircraft specs
|ref=Illustrated Encyclopedia of Aircraft<ref name="Orbis">Orbis 1985, p 2173</ref>
|ref=Illustrated Encyclopedia of Aircraft<ref name="Orbis">Orbis 1985, p 2173</ref>
|prime units? = imp
|met or eng?=<!-- eng for US/UK aircraft, met for all others -->eng

|crew=
|capacity=
|length m=15.11
|length m=15.11
|length ft=49
|length ft=49
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|span m=22.97
|span m=22.97
|span ft=75
|span ft=75
|span in=4½
|span in=4.5

|width m=<!-- if applicable -->
|width ft=<!-- if applicable -->
|width in=<!-- if applicable -->
|height m=5.19
|height m=5.19
|height ft=17
|height ft=17
|height in=0½
|height in=0.5
|wing area sqm=125
|wing area sqm=125
|wing area sqft=1345.53
|wing area sqft=1345.53

|aspect ratio=<!-- sailplanes -->
|empty weight kg=4020
|empty weight kg=4020
|empty weight lb=8862
|empty weight lb=8862
|gross weight kg=6100
|gross weight kg=6100
|gross weight lb=13448
|gross weight lb=13448
|lift kg=<!-- lighter-than-air -->
|lift lb=<!-- lighter-than-air -->

|eng1 number=2
|eng1 number=2
|eng1 type=[[Lorraine 12E Courlis|Lorraine 12E]] 12-cylinder piston engine
|eng1 name=[[Lorraine 12E Courlis|Lorraine 12E]] 12-cylinder piston engine
|eng1 kw=<!-- prop engines -->336
|eng1 kw=<!-- prop engines -->336
|eng1 hp=<!-- prop engines -->450
|eng1 hp=<!-- prop engines -->450

|eng2 number=
|eng2 type=
|eng2 kw=<!-- prop engines -->
|eng2 hp=<!-- prop engines -->

|max speed kmh=170
|max speed kmh=170
|max speed mph=106
|max speed mph=106
|endurance=14 hours 30 minutes

⚫
|armament = *2 × 7.7 mm (0.303 in) machine guns (one at bow cockpit and one midships)
|cruise speed kmh=<!-- if max speed unknown -->
⚫
*up to 300 kg (661 lb) of bombs
|cruise speed mph=<!-- if max speed unknown -->
|range km=
|range miles=
|endurance h=<!-- if range unknown -->14
|endurance min=<!-- if range unknown -->30
|ceiling m=
|ceiling ft=
|climb rate ms=
|climb rate ftmin=

⚫
|armament1=2 × 7.7 mm (0.303 in) machine guns (one at bow cockpit and one midships)
⚫
|armament2=up to 300 kg (661 lb) of bombs
|armament3=
|armament4=
|armament5=
|armament6=
}}
}}


==See also==
==See also==
[[File:Hiro_H1H_in_flight.jpg|thumb|right|H1H in flight.]]
{{aircontent|
{{aircontent|
<!-- designs which were developed into or from this aircraft: -->
<!-- designs which were developed into or from this aircraft: -->
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*[[Hiro H2H]]
*[[Hiro H2H]]
|similar aircraft=
|similar aircraft=
*[[English Electric Kingston]]
*[[Supermarine Swan]]
*[[Supermarine Southampton]]
*[[Supermarine Southampton]]
*[[Saunders A.14]]
*[[Naval Aircraft Factory PN]]
*[[Naval Aircraft Factory PN]]
*[[Supermarine Scapa]]
*[[Supermarine Scapa]]
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===Bibliography===
===Bibliography===
{{refbegin}}
{{refbegin}}
*{{cite book|title=Illustrated Encyclopedia of Aircraft (Part Work 1982-1985)|year= |publisher= Orbis Publishing|location= |issn=|pages=}}
*{{cite book|title=Illustrated Encyclopedia of Aircraft (Part Work 1982-1985)|publisher= Orbis Publishing}}
{{refend}}
{{refend}}
<!-- ==External links== -->
<!-- ==External links== -->
{{Hiro Naval Arsenal}}
{{Hiro Naval Arsenal}}
{{Japanese Navy Flying Boats}}
{{Japanese Navy short aircraft designations}}


[[Category:Japanese patrol aircraft 1920–1929]]
[[Category:1920s Japanese patrol aircraft]]
[[Category:Hiro aircraft|H1H]]
[[Category:Hiro aircraft|H1H]]
[[Category:Flying boats]]
[[Category:Flying boats]]
⚫
[[Category:Twin-engined tractor aircraft]]
[[Category:Biplanes]]
[[Category:Biplanes]]
⚫
[[Category:Twin piston-engined tractor aircraft]]
[[Category:Aircraft first flown in 1925]]

Latest revision as of 16:35, 23 February 2022

H1H
Late production H1H1 on a launching trolly.[1][2]
Role Patrol flying boat
National origin Japan
Manufacturer Hiro Naval Arsenal
First flight 1925
Retired 1938
Primary user IJN Air Service
Produced 1927–1934
Number built 65
Developed from Felixstowe F.5

The Hiro H1H (or Navy Type 15) was a 1920s Japanese bomber or reconnaissance biplane flying boat developed from the Felixstowe F.5 by the Hiro Naval Arsenal for the Imperial Japanese Navy. The aircraft were built by Hiro, the Yokosuka Naval Arsenal and Aichi.[3]

Design and development

[edit]

Following licensed production of the Felixstowe F.5 for the Imperial Japanese Navy the company developed an improved version known as the H1H or Navy Type 15. The aircraft was built with three different engine types fitted, the Navy Type 15-I with a wooden hull had longer span upper wings and the Navy Type 15-II had four-bladed propellers. The H1H remained in front line naval service through the 1930s.[1][2][3]

Variants

[edit]
H1H1
Variant powered by two 450hp (336kW) Lorraine W-12 engines.
H1H2
Variant powered by either two 450hp (336kW) Lorraine W-12 or two 500hp (373kW) BMW VII engines.
H1H3
Variant powered by two 450hp (336kW) Lorraine W-12 engines.

Operators

[edit]
 Japan

Specifications (H1H1)

[edit]
H1H2 side elevation, all-metal hull with Dornier-type external stiffeners.[1][2]

Data from Illustrated Encyclopedia of Aircraft[3]

General characteristics

  • Length: 49 ft 7 in (15.11 m)
  • Wingspan: 75 ft 4.5 in (22.97 m)
  • Height: 17 ft 0.5 in (5.19 m)
  • Wing area: 1,345.53 sq ft (125 m2)
  • Empty weight: 8,862 lb (4,020 kg)
  • Gross weight: 13,448 lb (6,100 kg)
  • Powerplant: 2 × Lorraine 12E 12-cylinder piston engine , 450 hp (336 kW) each

Performance

  • Maximum speed: 106 mph (170 km/h, 92 kn)
  • Endurance: 14 hours 30 minutes

Armament

  • 2 × 7.7 mm (0.303 in) machine guns (one at bow cockpit and one midships)
  • up to 300 kg (661 lb) of bombs

See also

[edit]
H1H in flight.

Related development

Aircraft of comparable role, configuration, and era

Related lists

References

[edit]
Wikimedia Commons has media related to Hiro H1H.

Notes

[edit]
  1. ^ a b c Mikesh, Robert C.; Abe, Shorzoe (1990). Japanese Aircraft 1910-1941. Maryland 21402: Naval Institute Press Annapolis. ISBN 1-55750-563-2.{{cite book}}: CS1 maint: location (link)
  2. ^ a b c Januszewski, Tadeusz; Zalewski, Kryzysztof (2000). Japońskie samoloty marynarski 1912-1945. tiel2, Lampart. ISBN 83-86776-00-5.{{cite book}}: CS1 maint: location (link) CS1 maint: location missing publisher (link)
  3. ^ a b c Orbis 1985, p 2173

Bibliography

[edit]
  • Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.
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