Heinkel HE 5

__NOTOC__ Infobox Aircraft
name=HE 5


caption=
type=Reconnaissance seaplane
national origin=Germany
manufacturer=Heinkel, Svenska, Focke-Wulf, Swedish Air Force
designer=
first flight=avyear|1926
introduced=
retired=
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primary user=Swedish Air Force
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variants with their own articles=The Heinkel HE 5, produced in Sweden as the Svenska S 5 and nicknamed the "Hansa", was a reconnaissance seaplane built during the 1920s. It was a further development of the HE 1, sharing its same basic configuration as a low-wing, strut-braced monoplane. The HE 5 also built upon Heinkel's experiences of mixed construction as used on the HE 4, having a fuselage structure of fabric-covered steel tube, and wooden wings largely skinned in alloy. The usual crew carried was just two, pilot and observer seated in tandem, open cockpits; however, some HE 5s also had a third cockpit which could be used to carry a trainee.

Two prototypes were built in 1926, and after initial testing were entered in the German seaplane trials at Warnemünde , winning first and second places in the speed trials. The Swedish Air Force soon ordered the type to supplement the HE 1s, HE 2s, and HE 4 that it had acquired when it took over Swedish naval aviation in 1926, and eventually 40 HE 5s were built under licence by Svenska Aero.

In 1927, the Soviet Union also ordered the aircraft, to replace the obsolete flying boats then in service. A prototype was tested on the Black Sea in March the following year, where it was discovered that the aircraft's performance was significantly lower than had been specified by Heinkel. Modifications were made to a second prototype, and this was flight tested in November. This led to an order in quantity soon thereafter, but they did not remain in service long, being phased out by 1930.

In Germany, however, the type remained in service until 1933, with machines licence-built by Focke-Wulf equipping clandestine naval aviation units disguised as training schools for airlines.

Two HE 5s are preserved in museums - one at the Flygvapenmuseum in Linköping, and one at the Muzeum Lotnictwa Narodowe, Krakow.

Variants

Germany

* HE 5a - prototype with Napier Lion engine (1 built)
* HE 5b - production version with Gnome et Rhône-built Bristol Jupiter engine
* HE 5c - production version for Soviet Union with BMW VI engine
* HE 5e - version with BMW VI engine (7 built)
* HE 5f - Focke-Wulf version with BMW VI engine for German clandestine military units

weden

* S 5 - Bristol Jupiter-powered two-seater (4 built by Svenska Aero)
* S 5A - S 5 with three seats and a radio set (12 built by Svenska Aero, plus 10 built by Swedish Air Force itself)
* S 5B - version with Nohab-built Bristol Pegasus engine (1 built by Swedish Air Force)
* S 5C - refinement of S 5B with Townend ring, new cockpit and tail design, and new floats built by Short Brothers (9 built by Swedish Air Force)
* S 5D - refinement of S 5C with more powerful engine and new propeller (4 built by Swedish Air Force)

pecifications (HE 5c)

aerospecs
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met or eng?= met

crew=Two, pilot and observer
capacity=
length m=12.18
length ft=40
length in=0
span m=16.80
span ft=55
span in=1
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swept ft=
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rot number=
rot dia m=
rot dia ft=
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dia m=
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width m=
width ft=
width in=
height m=4.38
height ft=14
height in=4
wing area sqm=48.9
wing area sqft=526
swept area sqm=
swept area sqft=
rot area sqm=
rot area sqft=
volume m3=
volume ft3=
aspect ratio=
empty weight kg=2,000
empty weight lb=4,400
gross weight kg=2,900
gross weight lb=6,400
lift kg=
lift lb=

eng1 number=1
eng1 type=BMW VI
eng1 kw= 360
eng1 hp= 480
eng1 kn=
eng1 lbf=
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eng2 number=
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max speed kmh=200
max speed mph=125
max speed mach=
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range km=
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endurance h=
endurance min=
ceiling m=5,500
ceiling ft=18,000
glide ratio=
climb rate ms=4.8
climb rate ftmin=930
sink rate ms=
sink rate ftmin=

armament1=1 × fixed, forward-firing .303 Vickers machine gun
armament2=2 × trainable, rearward-firing .303 Lewis guns on ring mount for observer
armament3=160 kg (350 lb) of bombs carried under rear fuselage
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armament5=
armament6= aircontent
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References

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