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The Häfeli DH-4 was a Swiss fighter prototype in the late 1910s. 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.

but efforts to build a Swiss fighter (the Häfeli DH-4) were halted in 1918 because of the prototypes' poor performance.1
DH-4Häfeli DH-4The Häfeli DH-4 was a Swiss fighter prototype in the late 1910s. The DH-4 was a single seat fighter based on the successful Häfeli DH-3 design.2

Made by K+W.

Le Häfeli DH-4 & DH-5 fut utilisé par l'aviation militaire suisse entre 1922 et 1940. - Le Häfeli fut construit en 3 variantes, le DH-3, DH-4 et DH-5.3
The Häfeli DH-4 was a Swiss fighter prototype in the late 1910s. The DH-4 was a single seat fighter based on the successful Häfeli DH-3 design.4
Height Main
2.60 m
Height Alt
8
Designer
August Häfeli
Length Alt
19
Jet Or Prop
prop
Range Main
300.0
Loaded Weight Main
885.0
Max Speed Alt
92 mph
Type Of Prop
eight cylinder water-cooled engine
Max Speed Main
148.0
Number Built
1
Crew
Two
Climb Rate Main
4.5m-s
Area Main
22.00m²
Primary user
Swiss Air Force
Span Alt
980.44
Plane Or Copter?
plane
Power Alt
150 hp
Engine(prop)
Hispano-Suiza HS-41
Manufacturer
K+W
First Flight
early
Loaded Weight Alt
1951.0
More Performance
17040.0
Number Of Props
1
Guns
1
Climb Rate Alt
886.0
Length Main
6.00m
Span Main
9.80 m
Area Alt
236.8
Range Alt
186 miles
Empty Weight Main
640.0
Power Main
112.0
Empty Weight Alt
1410.0
Category
Swiss fighter aircraft 1910-1919

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