The Häfeli DH-1 was a 1910s
Swiss
Swiss may refer to:
* the adjectival form of Switzerland
* Swiss people
Places
* Swiss, Missouri
* Swiss, North Carolina
*Swiss, West Virginia
* Swiss, Wisconsin
Other uses
*Swiss-system tournament, in various games and sports
*Swiss Internation ...
two-seat reconnaissance aircraft, built by the aircraft department of the Federal Construction Works (''
Eidgenoessische Konstruktionswerkstaette
''Eidgenössische Konstruktionswerkstätte'' English: "Federal Constructions Works", short K+W, was a Swiss state-owned enterprise, with the aim of making the Swiss military independent of foreign sources for its equipment needs. It was establishe ...
'',
K+W) at
Thun
, neighboring_municipalities= Amsoldingen, Heiligenschwendi, Heimberg, Hilterfingen, Homberg, Schwendibach, Spiez, Steffisburg, Thierachern, Uetendorf, Zwieselberg
, twintown =
, website = www.thun.ch
Thun (french: Thoune) ...
, Switzerland.
Development and design
In 1915 K + W set up their aircraft department and employed August Häfeli as chief engineer. Häfeli had previously designed the
AGO C.I
The AGO C.I was a First World War German pusher reconnaissance biplane that used a pod-and-boom configuration.
Development
The crew and pusher engine shared a central nacelle, and the twin booms carried the tail and the four-wheeled landing ge ...
and
AGO C.II,
German
German(s) may refer to:
* Germany (of or related to)
** Germania (historical use)
* Germans, citizens of Germany, people of German ancestry, or native speakers of the German language
** For citizens of Germany, see also German nationality law
**Ge ...
reconnaissance biplanes. His first design was the Häfeli DH-1, similar in concept to his designs for
AGO Flugzeugwerke. The DH-1 was a three-bay biplane of wood and fabric construction, it had a fuselage pod with tandem seating for the two-man crew and twin booms mounting the tail. The DH-1 was powered by an
Argus As II
The Argus As II was a six-cylinder, in-line, water-cooled, aircraft engine produced in Germany by Argus Motoren in 1914.
The Argus As II produced at 1,350 rpm.Der Argus Flugmotor, 1916
Design and development
The Argus As II was a major re ...
engine built under licence by
Buhler Brothers Limited. Six aircraft were built.
Operational history
Six DH-1s were built during 1916 but within a year three had been destroyed in accidents. The survivors were withdrawn from service in 1919 and scrapped.
Operators
;
*
Swiss Air Force
Specifications (DH-1)
References
External links
* ETH-Bibliothek Zürich, Bildarchiv
Häfeli DH-1 (M I) No 243 with Argus As II engineviewer
{{DEFAULTSORT:Hafeli Dh-1
1910s Swiss military reconnaissance aircraft
Biplanes
Pusher aircraft
Aircraft first flown in 1916
Twin-boom aircraft