The Koolhoven F.K.58 was a single engine, interceptor-fighter aircraft designed and mainly manufactured by N V Koolhoven in the Netherlands under contract by France.
Intended for Armée de l’Air use, the F.K.58 saw limited service in the Battle of France.
Variants
F.K.58 Prototype
Prototype powered by 1,080 hp Hispano-Suiza 14AA engine, 2 built.
FK-58
[Bristol Taurus]
Dutch version powered by Bristol Taurus engine, projected Dutch aircraft, none built.
F.K.58
First production variant powered by Hispano-Suiza 14AA radial engine, 7 built.
F.K.58A
Production version powered by Gnome-Rhône 14N-16 engine, 11 built.
Specifications
Crew
1
Length
8.69 m (28 ft 6 in)
Wingspan
9.96 m (32 ft 8 in)
Wing area
17.3 m2 (186 sq ft)
Empty weight
1,810 kg (3,990 lb)
Fuel capacity
505 l (133 US gal; 111 imp gal) in three wing tanks
Powerplant
1 × Hispano-Suiza 14AA-10 14-cylinder air-cooled radial piston engine, 810 kW (1,080 hp) at 4,511 m (14,800 ft)
Alternative powerplants include
670 kW (900 hp) Bristol Taurus
&
770 kW (1,030 hp) Gnome-Rhône 14N-16
Propellers
3-bladed variable-pitch propeller
Performance
Maximum speed
483 km/h (300 mph, 261 kn) at 4,493 m (14,740 ft)
Cruise speed
431 km/h (268 mph, 233 kn)
Range
853 km (530 mi, 461 nmi)
Service ceiling
10,200 m (33,500 ft)
Rate of climb
16.3 m/s (3,210 ft/min) at 4,001 m (13,126 ft)
Time to altitude
6,998 m (22,960 ft) in 8 minutes 48 seconds
Wing loading
147 kg/m2 (30.2 lb/sq ft)
Power/mass
0.31 kW/kg (0.19 hp/lb)
Armament
Guns
4 × 7.5 mm FN-Browning machine guns in underwing fairings.
