Heinkel HD 25

__NOTOC__ Infobox Aircraft
name=HD 25


caption=
type=Reconnaissance seaplane
national origin=Germany
manufacturer=Heinkel, Aichi
designer=
first flight=avyear|1928
introduced=
retired=
status=
primary user=Imperial Japanese Navy
more users=
produced=
number built=ca. 18
variants with their own articles=The Heinkel HD 25 was a reconnaissance seaplane developed in Germany during the 1920s for production in Japan. It was intended to provide a spotter aircraft for warships, to take off from a short ramp since shipboard catapults had not yet been invented. The HD 25 was a conventional biplane with staggered wings and twin pontoon undercarriage. The pilot and observer sat in tandem, open cockpits. Following trials, the Navy officially accepted the type in March 1928 and gave it the designation Type 2 Two-seat Reconnaissance Seaplane. Sixteen were built by Aichi and saw brief service aboard the cruisers of the Imperial Japanese Navy.

A single example of a demilitarised version was built by Aichi as the AB-1.

pecifications (Aichi-built)

aerospecs
ref=
met or eng?= met

crew=Two, pilot and observer
capacity=
length m=9.70
length ft=31
length in=10
span m=14.88
span ft=48
span in=10
swept m=
swept ft=
swept in=
rot number=
rot dia m=
rot dia ft=
rot dia in=
dia m=
dia ft=
dia in=
width m=
width ft=
width in=
height m=4.27
height ft=14
height in=0
wing area sqm=
wing area sqft=
swept area sqm=
swept area sqft=
rot area sqm=
rot area sqft=
volume m3=
volume ft3=
aspect ratio=
empty weight kg=1,700
empty weight lb=3,750
gross weight kg=2,570
gross weight lb=5,650
lift kg=
lift lb=

eng1 number=1
eng1 type=Napier Lion
eng1 kw= 334
eng1 hp= 450
eng1 kn=
eng1 lbf=
eng1 kn-ab=
eng1 lbf-ab=
eng2 number=
eng2 type=
eng2 kw=
eng2 hp=
eng2 kn=
eng2 lbf=
eng2 kn-ab=
eng2 lbf-ab=

max speed kmh=203
max speed mph=127
max speed mach=
cruise speed kmh=
cruise speed mph=
range km=910
range miles=570
endurance h=
endurance min=
ceiling m=
ceiling ft=
glide ratio=
climb rate ms=3.3
climb rate ftmin=645
sink rate ms=
sink rate ftmin=

armament1=1 × rearward-firing, trainable 7.7 mm machine gun for observer
armament2=300 kg (660 lb) of bombs
armament3=
armament4=
armament5=
armament6= aircontent
see also=
related=
similar aircraft=
lists=

References

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