Hopfner HS-5/28

HS-5/28
Role	Utility aircraft
National origin	Austria
Manufacturer	Hopfner
Designer	Theodor Hopfner
First flight	July 1928
Number built	4

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.

Variants

HS-5/28 - version with NZ60 engine
HS-5/28a - version with NZ85 engine

Specifications (HS-5/28a)

General characteristics

Crew: One pilot
Capacity: 1 passenger
Length: 7.40 m (24 ft 3 in)
Wingspan: 11.26 m (36 ft 11 in)
Height: 2.55 m (8 ft 4 in)
Wing area: 18.5 m² (199 ft²)
Empty weight: 400 kg (880 lb)
Gross weight: 650 kg (1,430 lb)
Powerplant: 1 × Walter NZ85, 63 kW (85 hp)

Performance

Maximum speed: 150 km/h (96 mph)
Range: 1,200 km (750 miles)

References

The Illustrated Encyclopedia of Aircraft. London: Aerospace Publishing. p. 2174.
Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 511.
Уголок неба

Aircraft produced by Hopfner, Hirtenberg, and Wiener Neustadter Flugzeugwerk (WNF)

Hopfner	S-1 HV-2 HV-3/27 HV-4/28 HS-5/28 HV-6/28 HS-8/29 HV-8/29 HS-10/32 HS-10/33 HA-11/33¹ HV-12/34 HR-14/34

Hirtenburg	HS-9, HS-16 HM-13/34 HV.15

WNF	WNF-4 Wn 11 Wn 15 Wn 16 WNF 342

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

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