HV-4/28 | |
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Role | Airliner |
National origin | Austria |
Manufacturer | Hopfner |
Designer | Theodor Hopfner |
First flight | 25 July 1929 |
Primary user | Rundflugunternehmen Theodor Hopfner |
Number built | 1 |
The Hopfner HV-4/28 was a small airliner built in Austria in the late 1920s. An enlarged version of the HV-3/27, it was a conventional, high-wing cantilever monoplane with a fully enclosed cabin. A single example was built in 1928 and saw heavy use by the airline that year. In 1929, it received a major refurbishment that included a change or powerplant from the original Heiro to a Gnome et Rhône 9A Jupiter engine and was sold to a private owner under the new designation HV-8/29GR. This aircraft was still flying at the time of the Anschluß, after which it received a new German registration.
General characteristics
Performance
Hopfner, Hirtenberg, and Wiener Neustadter Flugzeugwerk (WNF) aircraft | |
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Hopfner | |
Hirtenburg |
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WNF | |
WNF absorbed Hirtenburg (which had taken over Hopfner). In WWII, the WNF plant at Wiener Neustadt manufactured Messerschmitt Bf 109s and repaired Junkers bombers and destroyers. ^Note 1 The identifier "Ha" was also for Hamburg-Steinwerder |