Fokker T.IV

The Fokker T.IV was a 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 Japanese invasion in 1942.


Fokker T.IV
Class Aircraft
Type Utility
Manufacturer Fokker
Origin Netherlands
Country Name Origin Year
Netherlands 1927
Country Name Operational Year Retirement Year
Netherlands 1927 1942 View
Portugal View
ManufacturerName Production From Production To Quantity
Fokker 33 View

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, 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. 12 were built for the Dutch Naval Aviation Service, while the remaining T-IVs were rebuilt to the T-IVa standard.

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

The T.IV proved to be a reliable and seaworthy aircraft, 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. All the remaining TIVs were destroyed during the Japanese invasion, either by Japanese bombing or scuttling.

Role Maritime patrol floatplane
Manufacturer Fokker
First flight 1927
Introduction 1927
Retired 1942
Primary users Netherlands
Portugal
Number built 33


General characteristics

  • Crew: 4
  • Length: 17.60 m (57 ft 8¾ in)
  • Wingspan: 26.20 m (85 ft 11½ in)
  • Height: 6.00 m (19 ft 8¼ in)
  • Wing area: 97.80 m² (1,053 ft²)
  • Empty weight: 4,665 kg (10,285 lb)
  • Max. takeoff weight: 7,200 kg (15,873 lb)
  • Powerplant: 2 × Wright SR-1820-F2 Cyclone 9 cylinder radial, 559 kW (750 hp) each

Performance

  • Maximum speed: 260 km/h (140 kn, 161 mph)
  • Cruise speed: 215 km/h (116 kn, 134 mph)
  • Range: 1560 km (843 NM, 969 mi)
  • Service ceiling: 5900 m (19,355 ft)
  • Wing loading: 73.6 kg/m² (15.1 lb/ft²)
  • Power/mass: 160 W/kg (0.095 hp/lb)

Armament

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

End notes