Häfeli DH-4
| Häfeli DH-4 | |
|---|---|
| Role | fighter |
| Manufacturer | K+W |
| Designer | August Häfeli |
| First flight | early 1918 |
| Primary user | Swiss Air Force |
| Number built | 1 |
The Häfeli DH-4 was a Swiss fighter prototype in the late 1910s, build by the Eidgenoessische Konstruktionswerkstaette. The DH-4 was a single-seat fighter based on the successful Häfeli DH-3 design. It was made of wood with fabric covering, and carried one machine gun.
Operational history[edit]
The Swiss Air Force trialled it from May 1918 to August 1918, but the DH-4 was found to possess disappointing performance and poor handling. As such only one was ever produced and production ceased in late 1918.
List of operators[edit]
Specifications[edit]
Data from The Complete Book of Fighters[1]
General characteristics
- Crew: 1
- Length: 6 m (19 ft 8 in)
- Wingspan: 9.8 m (32 ft 2 in)
- Height: 2.6 m (8 ft 6 in)
- Wing area: 22 m2 (240 sq ft)
- Empty weight: 640 kg (1,411 lb)
- Gross weight: 885 kg (1,951 lb)
- Powerplant: 1 × Hispano-Suiza HS-41 V-8 water-cooled piston engine, 112 kW (150 hp)
- Propellers: 2-bladed fixed-pitch propeller
Performance
- Maximum speed: 148 km/h (92 mph, 80 kn)
- Range: 300 km (190 mi, 160 nmi)
- Endurance: 4 hours 30 minutes
- Rate of climb: 4.5 m/s (890 ft/min)
- Time to altitude: 1,829 m (6,000 ft) in 14 minutes
Armament
- Guns: 1 x synchronised machine gun
References[edit]
- ^ Green, William; Swanborough, Gordon (1994). The Complete Book of Fighters. London: Salamander. p. 272. ISBN 1-85833-777-1.
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