History
The Koolhoven Fk46 was a two seat trainer and sports plane. The first prototype, a wooden biplane with open cockpits was built in 1933 and made the first flight in the autumn 1933. It was designed so that it can not be exaggerated, a convenient feature for training aircraft.
The aircraft was extensively tested by the NLS (National Aviation School) and eventually purchased, followed by an order for five aircraft. These had a fuselage of steel tube with linen and a different engine, a DeHavilland Gipsy Major I. The bonnet was a different shape. Further, a plexi glass was cockpit hood is placed over both cockpits, whereby also the rear end of the hull was increased.
| Dimensions: | |||
| Length: | 7,1 m | Wingspan: | 8 m |
| Height: | - m | Wing area: | - m2 |
| Weights: | |||
| Empty weight: | 850 kg | Max. start weight: | - kg |
| Performances: | |||
| Max. speed: | 175 km/hr | Climbing speed: | - m/min |
| Cruising speed: | - km/hr | ||
| Range: | - km | Service ceiling: | - m |
| Miscellaneous: | |||
| Engine type: | One De Havilland Gipsy Major I rated 130 hp | ||
| Crew: | Two | ||
| Armament: | None | ||
The LVA bought one example unit as a trainer. They wanted a little spicier and brighter version to test for use as a trainer for fighter pilots. It would thereby be used for practising aerobatics.
The LVA version was therefore modified and got both upper and lower wing ailerons and also the tail fin was reduced and also the tail surfaces were modified. The type could now be easier perform in a tailspin
Because of flying upside down behind the engine a little fuel tank was applied to provide the engine inverted flight with fuel. The aircraft made on April 2, 1937 the first flight.
Around the same time for the same purpose a Bücker Bu-131 Jungmann was purchased.
The Koolhoven proved to be inferior, and in mid-1937 it was sold back to Koolhoven, who eventually sold it to the South Sumatra club in Palembang.
| Serial | Construction nr. | Date in service | Date out of service | Notes |
|---|---|---|---|---|
| 76 | 4608 | 04-1937 | 08-1937 |
1/72nd Scale
Kits
- Vami
- Kit 7210: a resin kit of a Koolhoven FK46
Modelling add-on
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Decals
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1/48th Scale
Kits
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- Kit --: --
Modelling add-on
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- Set --: --
Decals
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- Set --: ---
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| Scheme | Colour name | FS number | WEM | Humbrol | XtraColor | Vallejo Model Color | Vallejo Model Air | |
|---|---|---|---|---|---|---|---|---|
| Standard #1 | Overall | LVA Blue | AC D05 | 115 ? | X-214? | |||
Check www.paint4models.com for an extensive conversion table with lots of colour and paint systems.
Literature.
| Van Brik tot Starfighter | H. Hooftman | 1965 | La Rivière en Voorhoeve - Zwolle | |
| Nederlandse Militaire Luchtvaart in Beeld. deel 1. | Hugo Hooftman | Pag. 128 - 129 | 1977 | Uitgever: Europese Bibliotheek, Zaltbommel |
| Koolhoven Nederlandse vliegtuigbouwer in de schaduw van Fokker | Theo Wesselink & Thijs Postma | Pag. 77 - 81 | 1981 | Uitgever: Unieboek b.v., Houten |
| De Nederlandse Vliegtuigen: Alle vliegtuigen ooit in Nederland ontworpen en gebouwd | Theo Wesselink & Thijs Postma | Pag. 86 | 1982 | Uitgever: Romen Luchtvaart, Haarlem |
| Camouflage en Kentekens | J.Greuter e.a. | 1997 | Bonneville – Bergen (NH) |
Websites.
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Nederlands (nl-NL) 
English (United Kingdom)