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The Hirtenberg HS.9 was an Austrian two-seat touring or training aircraft of the late 1920s and early 1930s. A derivative of the Hopfner HS-5-28 via the Hopfner HS-8-29 it was a parasol wing monoplane with a fixed tailskid landing gear and room for two occupants in tandem open cockpits and first flew as the Hopfner HS-9-32 in 1932 powered by a de Havilland Gipsy I engine. Production versions had Siemens Sh 14 engines with NACA cowlings.

Hindustan HT-2 Hirtenberg HS-9 Hispano-Aviacion HA-100 Triana Hispano-Aviacion HA-200 Saeta Hopfner HV-428 Hopfner HS-935 Hopfner-Hirtenberg HM-1334 Horden-Richmond Autoplane Howard DGA-6 Mister Mulligan Hughes H-1 Hughes MD-500 1
The Hirtenberg HS.9 was an Austrian two-seat touring or training aircraft of the late 1920s and early 1930s.2

Made by Hopfner (aircraft manufacturer)Otto Eberhardt Patronenfabrik.

__NOTOC__The Hirtenberg HS.9 was an Austrian two-seat touring or training aircraft of the late 1920s and early 1930s.3
Empty Weight Lb
1254
Designer
Theodor Hopfner
Eng 1 Type
De Havilland Gipsy Major
First Flight
1930.0
Eng 1 Kw
90
Gross Weight Lb
2090
Number Built
ca. 40
Crew
2
Empty Weight Kg
569
Gross Weight Kg
948
Span M
11
Manufacturer
Hopfner (aircraft manufacturer)
Otto Eberhardt Patronenfabrik
Max Speed Mph
118
Max Speed Kmh
190
Span In
Span Ft
36
Met Or Eng
met
Length Ft
26
Eng 1 Hp
120
Eng 1 Number
1
Length In
5
Length M
8
Category
Austrian civil utility aircraft 1930-1939
Hopfner aircraft

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