Häfeli DH-5
| Häfeli DH-5 | |
|---|---|
 A Häfeli DH-5 in the Flieger-Flab-Museum |
|
| Type: | Reconnaissance plane |
| Design country: | |
| Manufacturer: | |
| First flight: |
1919 |
| Commissioning: |
1922 |
| Number of pieces: |
80 |
The Häfeli DH-5 was a double-decker fighter aircraft designed by the Swiss designer August Haefeli .
history
The construction of the prototype on the basis of a specification of the EMD began in 1918 in the Federal Construction Workshop , Flight Department in Thun . In March 1919, the test flights of the type began, which was designed as a reconnaissance and training aircraft for the Swiss air force. In May of the following year, the troops began testing. After solving some engine problems, the aircraft was released for series production.
The LFW I from the Winterthur locomotive factory was used as the first engine . 39 aircraft of this first series were procured and used from 1922. 20 more aircraft followed from 1924 as a second series with the somewhat more powerful LFW II engine. A single aircraft (No. 461) was built in 1924 with a somewhat more powerful 300 hp Hispano-Suiza engine. The flight performance improved as a result, but no more engines could be procured. In 1929 another series of 20 aircraft with the LFW III engine was built.
In 1929, Airplane No. 416 in Great Britain was fitted with a split wing at Handley-Page . For the international flight , the aircraft had the civil registration CH-136. In Switzerland, another 23 of the remaining first series aircraft received such a system in 1930. 18 aircraft of the second series were also equipped with the slat, as well as all aircraft of the third series shortly after their commissioning.
After a demonstration of an aerial target by Ernst Udet in March 1930, the aircraft of the third series were equipped in such a way that they could be equipped with an exchangeable target towing device.
Whereabouts
Since none of the aircraft was preserved, the project of a replica was started for the Museum of the Swiss Air Force .
Military use
Technical specifications
| Parameter | Data |
|---|---|
| crew | 2 |
| length | 7.60 m |
| span | 11.16 m |
| height | 3.10 m |
| Wing area | 31 m² |
| Empty mass | 660 kg |
| Max. Takeoff mass | 1095 kg |
| Top speed | 170 km / h |
| Rate of climb | 4 m / s |
| Service ceiling | 5000 m |
| Range | 480 km |
| Engines | 1 × 8-cylinder V-engine LFW I with 132 kW |
| Armament | 1 rigid, synchronized MG above the motor 1 movable MG in the observer's position |
See also
literature
- The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985). Orbis Publishing.
- Dübendorf Military Airfield Department (ed.) The aircraft of the Swiss Air Force since 1914 , Th. Gut publishing house, Stäfa 1974
Web links
Individual evidence
- ↑ Hans Giger: Report on the activities of the senior groups Buochs and Interlaken from mid-1979 to the end of 1998 ( Memento from July 10, 2019 in the Internet Archive )