Hirtenberg HS.9

__NOTOC__ Infobox Aircraft
name=HS.9 and HS.16


caption=
type=two-seat touring monoplane
manufacturer=Hopfner, Hirtenberg
designer=Theodor Hopfner
first flight=1930s
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produced=
number built=ca. 40
variants with their own articles=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. A single example of a refined version with an uncowled Siemens engine was flown in 1935 as the Hopfner HS-9/35, shortly before the Hopfner company went bankrupt.

When Hopfner's assets were purchased by Otto Eberhardt Patronenfabrik, production continued of both de Havilland- and Siemens-powered aircraft under the Hirtenberg brand.

Variants

* HS-9/32 - Original version by Hopfner
* HS-9/35 - developed version of HS-9/32
* HS.9 - Production aircraft with a Siemens Sh 14a piston engine.
** HS.9A - Production aircraft with a de Havilland Gipsy Major piston engine.
* HS.16 - military trainer version of HS.9

pecifications (HS.9A)

aerospecs
ref=A.J.Jackson, "British Civil Aircraft since 1919" Volume 3, Putnam & Company, London, 1974, ISBN 370 10014 X, Page 369
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crew=2
capacity=
length m=8.05
length ft=26
length in=5
span m=10.972
span ft=36
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empty weight kg=568.8
empty weight lb=1254
gross weight kg=948
gross weight lb=2090
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eng1 number=1
eng1 type=de Havilland Gipsy Major
eng1 kw= 90
eng1 hp= 120
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max speed kmh=190
max speed mph=118
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References

* The Illustrated Encyclopedia of Aircraft (Part Work 1982-1985), 1985, Orbis Publishing, Page 2173
* A.J.Jackson, "British Civil Aircraft since 1919" Volume 3, Putnam & Company, London, 1974, ISBN 370 10014 X, Page 369