Koolhoven F.K.51
Koolhoven · Netherlands · first flew 1935 · light aircraft
The Koolhoven F.K.51 was a 1930s Dutch two-seat basic training biplane built by the Koolhoven Company.
Recognition (WEFT)
| W — Wings | Mid-mounted, straight |
|---|---|
| E — Engines | 1 × piston, nose-mounted |
| F — Fuselage | 7.85 m fuselage |
| T — Tail | Conventional |
WEFT is AircraftIQ's four-point recognition method — how it works.
Spot it by:
- Equal-span two-seat biplane
- Single radial engine in the nose driving a fixed-pitch two-blade propeller
- Armstrong Siddeley Cheetah IX seven-cylinder radial
It is a two-seat tractor biplane with a nose-mounted radial engine and a wingspan of 9 m.
Specifications
- The Koolhoven F.K.51 has a length of 7.85 m (26 ft).
- It has a wingspan of 9 m (30 ft).
- Its maximum speed is 253 km/h (157 mph).
- Typical crew: 2.
Figures are for the representative variant described above; marks differ. See how AircraftIQ sources figures.
History
It first flew in 1935. It was powered by a single 261 kW Armstrong Siddeley Cheetah IX seven-cylinder radial engine.
Variants
Koolhoven built 142 F.K.51s in total, and the type had provision for one camera for reconnaissance work.
Where you'll see it
The primary user was the Royal Netherlands Air Force, and the Spanish Republican Air Force also used the type. A replica stands at the Militaire Luchtvaart Museum at Soesterberg.
Related aircraft
- Koolhoven F.K.49
- Koolhoven F.K.50
- Koolhoven F.K.48
- Koolhoven F.K.53 Junior
- Adaro 1.E.7 Chirta
- Ambrosini SAI.1
- American Gyro AG-4 Crusader
- Arup S-4
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