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<!-- 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 = T.IV
|name = T.IV
|image = File:COLLECTIE TROPENMUSEUM Een Fokker T-IV watervliegtuig van de MLD op de vliegbasis in Soerabaja TMnr 10028258.jpg
|image = File:Fokker T.IVa drijvervliegtuig 2161 027462.jpg
|caption = <!--image caption; if it isn't descriptive it should be left blank-->
|caption = <!--image caption; if it isn't descriptive it should be left blank-->
}}{{Infobox Aircraft Type
}}{{Infobox aircraft type
|type = Maritime patrol floatplane
|type = Maritime patrol floatplane
|manufacturer = [[Fokker]]
|manufacturer = [[Fokker]]
|designer = <!--only appropriate for individuals, not for project leaders or a company or corporation-->
|designer = <!--only appropriate for individuals, not for project leaders or a company or corporation-->
|first flight = [[1927 in aviation|1927]]
|first flight = 7 June [[1927 in aviation|1927]]
|introduced = [[1927 in aviation|1927]]<!--date the aircraft entered military or revenue service-->
|introduced = [[1927 in aviation|1927]]<!--date the aircraft entered military or revenue service-->
|introduction= <!--date the aircraft will enter military or revenue service, if the aircraft is still in development -->
|introduction= <!--date the aircraft will enter military or revenue service, if the aircraft is still in development -->
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|}
|}


The '''Fokker T.IV''' was a [[Netherlands|Dutch]] torpedo bomber/maritime reconnaissance [[floatplane]] of the 1920s and 30s. First flying in 1927, it served with the [[Dutch Naval Aviation Service]] in the [[Dutch East Indies]] until the remaining aircraft were destroyed during the [[Netherlands East Indies campaign|Japanese invasion]] in 1942.
The '''Fokker T.IV''' was a Dutch torpedo bomber/maritime reconnaissance [[floatplane]] of the 1920s and 1930s. First flying in 1927, it served with the [[Dutch Naval Aviation Service]] in the [[Dutch East Indies]] until the remaining aircraft were destroyed during the [[Netherlands East Indies campaign|Japanese invasion]] in 1942.


==Development and design==
==Development and design==
The Fokker T.IV was developed to meet the requirements of the [[Royal Netherlands Navy]] for a maritime patrol/[[torpedo bomber]] aircraft for use in the Dutch East Indies. First flying on June 7, 1927,<ref name="gunston world combat"> Gunston 1977, p.85.</ref> the T.IV was a twin engined [[floatplane]] with a thick, cantilever, high mounted [[monoplane]] wing and a deep, slab sided [[fuselage]]. An open cockpit housed the two pilots, while the aircraft had a defensive armament of three machine guns in nose, dorsal and ventral positions, while carrying either a torpedo or 800&nbsp;kg (1,764&nbsp;lb) of bombs. The initial version was powered by two {{convert|450|hp|abbr=on}} [[Lorraine-Dietrich]] [[w engine|broad arrow]] engines.
The Fokker T.IV was developed to meet the requirements of the [[Royal Netherlands Navy]] for a maritime patrol/[[torpedo bomber]] aircraft for use in the Dutch East Indies. First flying on June 7, 1927,<ref name="gunston world combat">Gunston 1977, p.85.</ref> the T.IV was a twin engined [[floatplane]] with a thick, cantilever, high mounted [[monoplane]] wing and a deep, slab-sided [[fuselage]] with an open cockpit housing the two-man crew. The aircraft could carry either a torpedo or 800&nbsp;kg (1,764&nbsp;lb) of bombs, and had a defensive armament of three machine guns in nose, dorsal and ventral positions, The initial version was powered by two {{convert|450|hp|abbr=on}} [[Lorraine-Dietrich 12E]] [[W engine|W-12]] engines.


In 1935, Fokker produced a developed version, the T-IVa, to supplement the existing T-IVs in Dutch service. [[Wright Cyclone]] [[radial engine]]s replaced the Lorraine Dietriches, while the pilots were provided with an enclosed cockpit in a hump over the wing root, and enclosed nose and dorsal gun turrets were fitted.<ref name="taylorp145"/> 12 were built for the Dutch Naval Aviation Service, while the remaining T-IVs were rebuilt to the T-IVa standard.<ref name="taylorp145"/>
In 1935, Fokker produced a developed version, the T-IVa, to supplement the existing T-IVs in Dutch service. [[Wright Cyclone]] [[radial engine]]s replaced the Lorraine Dietriches, while the pilots were provided with an enclosed cockpit in a hump over the wing root, and enclosed nose and dorsal gun turrets were fitted.<ref name="taylorp145"/> 12 were built for the Dutch Naval Aviation Service, while the remaining T-IVs were rebuilt to the T-IVa standard.<ref name="taylorp145"/>


==Operational history==
==Operational history==
Deliveries of the original T.IV to the Dutch Naval Aviation Service in the Dutch East Indies started in 1927 and continued until 1930.<ref name="aeroflight T4"> Hayles,John. [http://www.aeroflight.co.uk/waf/neth/mld/types/fokker_TIV.htm Netherlands Naval Aviation: Aircraft Types: Fokker T.IV] ''Aeroflight''. Retrieved 25 March 2008.</ref> The second batch of 12 TIVa aircraft was delivered to the East Indies from 1936 to 1938,<ref name="aeroflight T4"/> with the original T.IVs being rebuilt as T.IVas.<ref name="Janes encyclopediap408"> Taylor 1989, p.408</ref>
Deliveries of the original T.IV to the Dutch Naval Aviation Service in the Dutch East Indies started in 1927 and continued until 1930.<ref name="aeroflight T4">{{cite web | last = Hayles | first = John | url = http://www.aeroflight.co.uk/waf/neth/mLd/types/fokker_TIV.htm | archive-url = https://web.archive.org/web/20220812232154/http://www.aeroflight.co.uk/waf/neth/mLd/types/fokker_TIV.htm | archive-date = 2022-08-12 | title = Netherlands Naval Aviation: Aircraft Types: Fokker T.IV | work = Aeroflight }}</ref> The second batch of 12 TIVa aircraft was delivered to the East Indies from 1936 to 1938,<ref name="aeroflight T4"/> and the original T.IVs were rebuilt as T.IVas.<ref name="Janes encyclopediap408">Taylor 1989, p.408</ref>


The T.IV proved to be a reliable and seaworthy aircraft,<ref name="donald world p440"/> and continued in use for local patrols and air-sea rescue operations from the naval base at [[Surabaya|Soerabaja]] on [[Java]] until 1942, when the [[Empire of Japan|Japanese]] [[Netherlands East Indies campaign|attacked the Dutch East Indies]].<ref name="Purnellp2336"> Purnell 1978-79, p. 2336.</ref> All the remaining TIVs were destroyed during the Japanese invasion, either by Japanese bombing or scuttled.<ref name="Purnellp2336"/><ref name="aeroflight T4"/>
The T.IV proved to be a reliable and seaworthy aircraft,<ref name="donald world p440"/> and continued in use for local patrols and air-sea rescue operations from the naval base at [[Surabaya|Soerabaja]] on [[Java]] until 1942, when the [[Empire of Japan|Japanese]] [[Netherlands East Indies campaign|attacked the Dutch East Indies]].<ref name="Purnellp2336">Purnell 1978–79, p. 2336.</ref> All the remaining T.IVs were destroyed during the Japanese invasion, either by Japanese bombing or scuttling.<ref name="aeroflight T4"/><ref name="Purnellp2336"/>


==Variants==
==Variants==
;T.IV
;T.IV
:Original production version, powered by 336&nbsp;kW (450&nbsp;hp) Lorraine Dietrich engines. 18 built.<ref name="donald world p440"/>
:Original production version, powered by 336&nbsp;kW (450&nbsp;hp) [[Lorraine-Dietrich 12E]] engines. 18 built.<ref name="donald world p440"/>
;T.IVa
;T.IVa
:Refined version with Cyclone radial engines, enclosed cockpit and gun turrets. 12 built.
:Refined version with [[Wright SR-1820-F2 Cyclone]] radial engines, enclosed cockpit and gun turrets. 12 built.


==Operators==
==Operators==
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*[[Dutch Naval Aviation Service]]
*[[Dutch Naval Aviation Service]]
;{{POR}}
;{{POR}}
*Portugal received three T.IVs,<ref name="donald world p440"/> powered by [[Rolls-Royce Eagle]] engines.<ref name="taylorp145"> Taylor 1981, p.145.</ref>
*[[Portuguese Naval Aviation]] - Portugal received three T.IVs,<ref name="donald world p440"/> powered by [[Rolls-Royce Eagle]] engines.<ref name="taylorp145">Taylor 1981, p.145.</ref>


==Specifications (T.IVa)==
==Specifications (T.IVa)==
[[File:Fokker_T.IV_3-view_Les_Ailes_January_19,1928.png|thumb|Fokker T.IV 3-view drawing from Les Ailes January 19, 1928]]
{{aircraft specifications
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|ref= The Encyclopedia of World Aircraft <ref name="donald world p440"> Donald 1997, p.440</ref>
|crew=4
|crew=4
|length m=17.6
|capacity=
|span m=26.2
|length main= 17.60 m
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|wing area sqm=97.8
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|empty weight main= 4,665 kg
|empty weight kg=4665
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|max speed main= 260 km/h
|eng1 note = or 2 x {{cvt|450|hp|order=flip}} [[Lorraine 12Eb]] W-12 engines
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|cruise speed main= 215 km/h
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|range alt= 843 NM, 969 mi
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<!--
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Armament
*1 × 7.9 mm (.31 in) [[M1919 Browning machine gun|Browning machine gun]] each in nose and dorsal turrets and ventral position
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*Up to 800 kg (1,764 lb) bombs internally ''or'' 1 × torpedo externally.
|guns= 3 × 7.9 mm (.31 in) [[M1919 Browning machine gun|Browning machine gun]] one each in nose and dorsal turrets and ventral position
|avionics=
|bombs= Up to 800 kg (1,764 lb) bombs internally ''or'' 1 × torpedo externally.
}}
}}


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|lists=
|lists=
* [[List of aircraft of World War II]]
* [[List of aircraft of World War II]]
*[[List of seaplanes and flying boats]]
*[[List of flying boats and floatplanes]]
|see also=<!-- other relevant information -->
|see also=<!-- other relevant information -->
}}
}}


==References==
==References==

===Notes===
===Notes===
{{Reflist}}
{{Reflist}}
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===Bibliography===
===Bibliography===
{{refbegin}}
{{refbegin}}
* "THE FOKKER T. IV SEAPLANE: A Twin-Engined Torpedo or Bombing Monoplane". ''[[Flight International|Flight]]''. 26 January 1928. Pages 49-50.
* "THE FOKKER T. IV SEAPLANE: A Twin-Engined Torpedo or Bombing Monoplane". ''[[Flight International|Flight]]''. 26 January 1928. Pages 49–50.
* Donald, David (ed.) ''The Encyclopedia of World Aircraft.'' Aerospace Publishing. 1997. ISBN 1-85605-375-X.
* Donald, David (ed.) ''The Encyclopedia of World Aircraft.'' Aerospace Publishing. 1997. {{ISBN|1-85605-375-X}}.
* Gunston, Bill. ''The Encyclopedia of the World's Combat Aircraft''. Feltham, Middlesex, UK,: Hamlyn, 1977. ISBN 0 600 331 44 X.
* Gunston, Bill. ''The Encyclopedia of the World's Combat Aircraft''. Feltham, Middlesex, UK,: Hamlyn, 1977. {{ISBN|0-600-33144-X}}.
* Taylor, M.J.H. ''Warplanes of the World: 1918-1939''. Shepperton, Surry, UK: Ian Allen, 1981. ISBN 07110 1078 1.
* Taylor, M.J.H. ''Warplanes of the World: 1918–1939''. Shepperton, Surrey, UK: Ian Allan, 1981. {{ISBN|0-7110-1078-1}}.
* Taylor M.J.H.(Editor). ''Jane's Encyclopedia of Aviation''. London: Bracken, 1989. ISBN 1 85170 324 1.
* Taylor M.J.H.(Editor). ''Jane's Encyclopedia of Aviation''. London: Bracken, 1989. {{ISBN|1-85170-324-1}}.
* ''Purnell's Illustrated Encyclopedia of Modern Weapons and Warfare'' (Part work 1978-1979). London : Phoebus. p.2336.
* ''Purnell's Illustrated Encyclopedia of Modern Weapons and Warfare'' (Part work 1978–1979). London : Phoebus. p.&nbsp;2336.


{{refend}}
{{refend}}


==External links==
==External links==
{{Commons category}}
{{CommonsCat}}
*http://www.airwar.ru/enc/bww1/fokt4.html
*http://www.airwar.ru/enc/bww1/fokt4.html
*http://www.dutch-aviation.nl/index5/Military/index5-1%20T4.html
*http://www.dutch-aviation.nl/index5/Military/index5-1%20T4.html


{{Fokker aircraft}}
{{Fokker aircraft}}
{{aviation lists}}


[[Category:Fokker aircraft|T 04]]
[[Category:Fokker aircraft|T 04]]
[[Category:Dutch military reconnaissance aircraft 1920–1929]]
[[Category:1920s Dutch military reconnaissance aircraft]]
[[Category:High-wing aircraft]]

[[Category:Aircraft first flown in 1927]]
[[fr:Fokker T.IV]]
[[Category:Twin piston-engined tractor aircraft]]
[[fy:Fokker T. IV]]
[[nl:Fokker T.IV]]
[[pl:Fokker T.IV]]

Latest revision as of 03:44, 31 July 2023

T.IV
Role Maritime patrol floatplane
Manufacturer Fokker
First flight 7 June 1927
Introduction 1927
Retired 1942
Primary users Netherlands
Portugal
Number built 33

The Fokker T.IV was a Dutch torpedo bomber/maritime reconnaissance floatplane of the 1920s and 1930s. First flying in 1927, it served with the Dutch Naval Aviation Service in the Dutch East Indies until the remaining aircraft were destroyed during the Japanese invasion in 1942.

Development and design[edit]

The Fokker T.IV was developed to meet the requirements of the Royal Netherlands Navy for a maritime patrol/torpedo bomber aircraft for use in the Dutch East Indies. First flying on June 7, 1927,[1] the T.IV was a twin engined floatplane with a thick, cantilever, high mounted monoplane wing and a deep, slab-sided fuselage with an open cockpit housing the two-man crew. The aircraft could carry either a torpedo or 800 kg (1,764 lb) of bombs, and had a defensive armament of three machine guns in nose, dorsal and ventral positions, The initial version was powered by two 450 hp (340 kW) Lorraine-Dietrich 12E W-12 engines.

In 1935, Fokker produced a developed version, the T-IVa, to supplement the existing T-IVs in Dutch service. Wright Cyclone radial engines replaced the Lorraine Dietriches, while the pilots were provided with an enclosed cockpit in a hump over the wing root, and enclosed nose and dorsal gun turrets were fitted.[2] 12 were built for the Dutch Naval Aviation Service, while the remaining T-IVs were rebuilt to the T-IVa standard.[2]

Operational history[edit]

Deliveries of the original T.IV to the Dutch Naval Aviation Service in the Dutch East Indies started in 1927 and continued until 1930.[3] The second batch of 12 TIVa aircraft was delivered to the East Indies from 1936 to 1938,[3] and the original T.IVs were rebuilt as T.IVas.[4]

The T.IV proved to be a reliable and seaworthy aircraft,[5] and continued in use for local patrols and air-sea rescue operations from the naval base at Soerabaja on Java until 1942, when the Japanese attacked the Dutch East Indies.[6] All the remaining T.IVs were destroyed during the Japanese invasion, either by Japanese bombing or scuttling.[3][6]

Variants[edit]

T.IV
Original production version, powered by 336 kW (450 hp) Lorraine-Dietrich 12E engines. 18 built.[5]
T.IVa
Refined version with Wright SR-1820-F2 Cyclone radial engines, enclosed cockpit and gun turrets. 12 built.

Operators[edit]

 Netherlands
 Portugal

Specifications (T.IVa)[edit]

Fokker T.IV 3-view drawing from Les Ailes January 19, 1928

Data from The Encyclopedia of World Aircraft,[5] Jane's all the World's Aircraft 1931[7]

General characteristics

  • Crew: 4
  • Length: 17.6 m (57 ft 9 in)
  • Wingspan: 26.2 m (85 ft 11 in)
  • Height: 6 m (19 ft 8 in)
  • Wing area: 97.8 m2 (1,053 sq ft)
  • Empty weight: 4,665 kg (10,285 lb)
  • Max takeoff weight: 7,200 kg (15,873 lb)
  • Fuel capacity: 1,500 L (400 US gal; 330 imp gal) in several wing tanks and 2x 30 L (7.9 US gal; 6.6 imp gal) oil tanks in the engine nacelles.
  • Powerplant: 2 × Wright SR-1820-F2 Cyclone 9-cylinder air-cooled radial piston engines, 560 kW (750 hp) each or 2 x 340 kW (450 hp) Lorraine 12Eb W-12 engines
  • Propellers: 2-bladed fixed-pitch propellers

Performance

  • Maximum speed: 260 km/h (160 mph, 140 kn)
  • Cruise speed: 215 km/h (134 mph, 116 kn)
  • Range: 1,560 km (970 mi, 840 nmi)
  • Service ceiling: 5,900 m (19,400 ft)
  • Wing loading: 73.6 kg/m2 (15.1 lb/sq ft)
  • Power/mass: 0.160 kW/kg (0.097 hp/lb)

Armament

  • Guns: 3 × 7.9 mm (.31 in) Browning machine gun one each in nose and dorsal turrets and ventral position
  • Bombs: Up to 800 kg (1,764 lb) bombs internally or 1 × torpedo externally.

See also[edit]

Related lists

References[edit]

Notes[edit]

  1. ^ Gunston 1977, p.85.
  2. ^ a b c Taylor 1981, p.145.
  3. ^ a b c Hayles, John. "Netherlands Naval Aviation: Aircraft Types: Fokker T.IV". Aeroflight. Archived from the original on 2022-08-12.
  4. ^ Taylor 1989, p.408
  5. ^ a b c d Donald 1997, p.440
  6. ^ a b Purnell 1978–79, p. 2336.
  7. ^ Grey, C.G., ed. (1931). Jane's all the World's Aircraft 1931. London: Sampson Low, Marston & company, ltd. pp. 185c–186c.

Bibliography[edit]

  • "THE FOKKER T. IV SEAPLANE: A Twin-Engined Torpedo or Bombing Monoplane". Flight. 26 January 1928. Pages 49–50.
  • Donald, David (ed.) The Encyclopedia of World Aircraft. Aerospace Publishing. 1997. ISBN 1-85605-375-X.
  • Gunston, Bill. The Encyclopedia of the World's Combat Aircraft. Feltham, Middlesex, UK,: Hamlyn, 1977. ISBN 0-600-33144-X.
  • Taylor, M.J.H. Warplanes of the World: 1918–1939. Shepperton, Surrey, UK: Ian Allan, 1981. ISBN 0-7110-1078-1.
  • Taylor M.J.H.(Editor). Jane's Encyclopedia of Aviation. London: Bracken, 1989. ISBN 1-85170-324-1.
  • Purnell's Illustrated Encyclopedia of Modern Weapons and Warfare (Part work 1978–1979). London : Phoebus. p. 2336.

External links[edit]

Wikimedia Commons has media related to Fokker T.IV.
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