Fokker TV

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Fokker TV
Fokker TVjpg
Type: Bomb plane
Design country:

NetherlandsNetherlands Netherlands

Manufacturer:

Fokker

First flight:

October 16, 1937

Number of pieces:

16

The Fokker TV is a medium bomber aircraft that was developed in the Netherlands in the second half of the 1930s. It was used against opposing forces during the German raid in May 1940 .

development

The TV arose out of a request by the Royal Dutch Air Force for a heavy "Jagdkruiser" (jachtkruiser) from 1935. In early 1937, an order for 16 copies was placed for the model, which was still in the development phase. The first of these made its maiden flight on October 16 of the same year. It was also the first series model, because there was no real prototype . The TV had a somewhat difficult control and the flight stability left a lot to be desired. Nevertheless, by 1938, all TVs ordered were delivered and combined in the only bomber squadron of the Dutch armed forces. The aircraft had different engines; In total there were three different variants with different engines (see technical data).

When the fighting began in May 1940, the TV was no longer up to date; the T.IX replacement pattern had been in development since 1938 and had flown for the first time in 1939. Also only nine of the 16 were ready for use. These were used to repel the invasion, for example to bomb the Meuse bridges in order to slow down the German advance. At the end of the fighting there was only one TV left.

construction

The TV is a cantilevered middle decker in a composite construction . The fuselage consists of three parts, with the center piece and the wing forming a unit. The front part is made of duralumin with sheet metal paneling made of the same material. The rear part is made up of a tubular steel frame with fabric covering. The wing is made in one piece with two spars. It consists of a wooden frame with plywood and Bakelite planking . The fuel tanks with a total capacity of 1500 l are housed in it on both sides. The ailerons have static and dynamic compensation and consist of a wooden frame with plywood fittings. The tail unit is formed from the horizontal stabilizer and two rudder units and is supported on the fuselage with a V-strut on each side. Elevator and rudder are made of welded tubular steel with fabric covering, elevator and vertical fin are made of wood with plywood paneling. The wheels of the main landing gear are designed to be retractable backwards into the rear engine pods, while the rear wheel is rigid.

Technical specifications

The values ​​relate to the performance with normal payload, those in brackets after them refer to the performance with maximum payload.

Parameter TV with Gnome Rhône engines TV with Bristol engines TV with Armstrong-Siddeley engines
crew 5
span 21.00 m
length 16.00 m
height 5.00 m
Wing area 66.20 m²
Wing extension 6.7
Empty mass 5000 kg 4750 kg 5000 kg
payload 2350 kg (2750 kg) 2600 kg (3000 kg) 2350 kg (2750 kg)
Takeoff mass 7350 kg (7750 kg)
Wing loading 111 kg / m² (117 kg / m²)
Power load 3.8 kg / PS (4.0 kg / PS) 3 kg / PS (4.2 kg / PS) 4.7 kg / hp (5.0 kg / hp)
Area performance 29.6 hp / m² 28 hp / m² 26 hp / m²
drive two air-cooled 14-cylinder double radial engines
Gnome-Rhône 14N1		 two air-cooled 9-cylinder radial engines
Bristol Pegasus XXVI 		two air-cooled 14-cylinder double radial engines
Armstrong-Siddeley Tiger VIII
power 980 PS (721 kW) each in 4900 m 925 PS (680 kW) each in 3050 m 860 hp (633 kW) each in 2060 m
780 hp (574 kW) each in 4350 m
Top speed 445 km / h (443 km / h) 415 km / h (414 km / h) 401 km / h (400 km / h)
Marching speed 374 km / h (371 km / h) 348 km / h (346 km / h) 337 km / h (335 km / h)
Rise time 2.5 min (2.75 min) at 1000 m
4.9 min (5.35 min) at 2000 m
9.4 min (10.1 min) at 4000 m
14.9 min (16.1 min) 6000 m		 2.5 min (2.7 min) at 1000 m
5.0 min (5.4 min) at 2000 m
10.4 min (11.3 min) at 4000 m
19.4 min (21.5 min) 6000 m		 3.1 min (3.45 min) at 1000 m
6.1 min (6.75 min) at 2000 m
12.8 min (14.2 min) at 4000 m
22.8 min (25.9 min) 6000 m
Service ceiling 8450 m (8200 m) 7700 m (7400 m) 7400 m (7100 m)
Range 1630 km (1610 km) 1550 km (1550 km) 1760 km (1750 km)
Armament a 20-mm-MK or a 7.9-mm-twin-MG in the bow stand
, one 7.9-mm-MG in each of the fuselage back, fuselage floor, side and stern stands
up to 1000 kg of drop ammunition in the fuselage and on Under wing suspension points

literature

  • De Agostini (Ed.): Aircraft . The new encyclopedia of aviation. No. 102 . Topic, S. 2856 .
  • Peter All-Fernandez (ed.): Aircraft from A to Z . Volume 2: Consolidated PBY - Koolhoven FK 55. Bernard & Graefe, Koblenz 1988, ISBN 3-7637-5905-0 , p. 271 .
  • Wilfried Copenhagen : The great aircraft type book . Motorbuch, Stuttgart 2005, ISBN 3-613-02522-1 , p. 348 .

Web links

Commons : Fokker TV  - collection of pictures, videos and audio files

Individual evidence

  1. ↑ a b c d Werner von Langsdorff : Handbook of aviation . Born in 1939. 2nd, unchanged edition. J. F. Lehmann, Munich 1937, p. 325 ff .