Puneet Varma (Editor)

Häfeli DH 4

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Top speed
  
148 km/h

Length
  
6 m

Wingspan
  
9.8 m

Manufacturer
  
Eidgenoessische Konstruktionswerkstaette

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.

Contents

Operational history

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

  Switzerland
  • Swiss Air Force

    • Specifications

    General characteristics

  • Crew: Two
  • Length: 6.00m (19 ft 8¼ in)
  • Wingspan: 9.80 m (32 ft 2 in)
  • Height: 2.60 m (8 ft 6⅓ in)
  • Wing area: 22.00m² (236.8 ft²)
  • Empty weight: 640 kg (1,410 lb)
  • Loaded weight: 885 kg (1,951 lb)
  • Powerplant: 1 × Hispano-Suiza HS-41 eight-cylinder water-cooled engine, 112 kW (150 hp)

    • Performance

  • Maximum speed: 148 km/h (92 mph)
  • Range: 300 km (186 miles)
  • Rate of climb: 4.5m/s (886 ft/min)
  • Time to 6,000 ft: 14 minutes
  • Endurance: 4.5 hours

    • Armament

  • Guns: 1 x synchronised machine gun

    • References

    Häfeli DH-4 Wikipedia
    (Text) CC BY-SA


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