Overview
The Hopfner HS-5/28 was a utility aircraft built in Austria in the late 1920s. It was a conventional, parasol-wing monoplane with seating for two occupants in tandem, open cockpits. The landing gear was of fixed, tailskid type with divided main units. Two examples were built with Walter NZ60 engines, followed by two more with the more powerful NZ85 for Swiss aeroclub use. One of these latter machines remained in service until 1934.
Specifications
Dimensions
| Length | 7.00 m |
|---|---|
| Wingspan | 11.26 m |
| Height | 2.55 m |
Performance
| Max. speed | 148 km/h |
|---|---|
| Range | 830 km |
Powerplant
| Engine model | Walter NZ 60 |
|---|
Figures are compiled from public sources and may be approximate; they can vary by variant and configuration.
Photos
Photo 1: neznámý (unknown) / Wikimedia Commons · Public domain
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