Heinkel HD 39

Heinkel HD 39

__NOTOC__ Infobox Aircraft
name=HD 39


caption=
type=Newspaper delivery aircraft
national origin=Germany
manufacturer=Heinkel
designer=
first flight=avyear|1926
introduced=
retired=
status=
primary user=Ullstein-Verlag
more users=
produced=
number built=1
variants with their own articles=
The Heinkel HD 39 was a special-purpose cargo aircraft developed in Germany in the 1920s to distribute the Berlin newspaper "B.Z.". It was a conventional single-bay biplane with staggered wings of equal span, and a fuselage that nearly filled the interplane gap. The pilot sat in an open cockpit, and the undercarriage was of fixed, tailskid type with divided main units. The sole example of the type was built after Ernst Heinkel found out, by chance, that "B.Z." required such an aircraft and had ordered two machines from Albatros. Heinkel convinced publisher Ullstein-Verlag to purchase a third aircraft from his firm.

The design was based on the HD 27 mailplane, and had a specially-designed payload bay to carry newspapers in 50 kg (110 lb) bundles. Ten separate compartments in the bay could be individually opened in flight in order to air-drop newspapers in places where the HD 39 could not land.

The HD 39 entered service alongside two Albatros L 72s in April 1926 and remained in Service until 1931, when distribution of "B.Z." by air was taken over by Lufthansa.

pecifications

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met or eng?= met
crew=Two
capacity=
length m=10.00
length ft=32
length in=10
span m=14.80
span ft=48
span in=7
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aspect ratio=
empty weight kg=1,320
empty weight lb=3,900
gross weight kg=
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lift kg=
lift lb=
eng1 number=1
eng1 type=BMW IV
eng1 kw= 170
eng1 hp= 230
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max speed kmh=166
max speed mph=104
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References

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