Fokker Dr.I

Specifications

1st Flight 1917

Crew: 1

Length: 5.77 m (18 ft 11 in)

Upper wingspan: 7.19 m (23 ft 7 in)

Height: 2.95 m (9 ft 8 in)

Wing area: 18.7 m2 (201 sq ft)

Aspect ratio: 4.04

Empty weight: 406 kg (895 lb)

Gross weight: 586 kg (1,291 lb)

Powerplant: 1 × Oberursel Ur.II 9-cylinder air-cooled rotary piston engine, 82 kW (110 hp)

Propellers: 2-bladed fixed-pitch wooden propeller

Performance

Maximum speed: 180 km/h (110 mph, 97 kn) at 2600m

Stall speed: 72 km/h (45 mph, 39 kn)

Range: 300 km (190 mi, 160 nmi)

Service ceiling: 6,100 m (20,000 ft)

Rate of climb: 5.7 m/s (1,120 ft/min)

Lift-to-drag: 8:1

Zero-lift drag coefficient: 0.0323

Frontal area at zero-lift drag coefficient: 0.62 m2 (6.7 sq ft)

Armament

Guns: 2 × 7.92 mm (0.312 in) Maschinengewehr 08 “Spandau” machine guns.

Variants

The Fokker Dr.I, often known simply as the Fokker Triplane, was a World War I fighter aircraft.

V.4 – Initial prototype

V.5 – First production prototype

V.6 – Enlarged prototype with Mercedes D.II engine

V.7 – Prototype with Siemens-Halske Sh.III engine

Vagel Grip SP.5 Greif – German post-war two seat copy of the Dr.I.

320 aircraft built.

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