Yokosuka K5Y

Infobox Aircraft
name=Yokosuka K5Y


caption=
type=Intermediate trainer
manufacturer=Various, see text
designer=
first flight=1933
introduced=1934
retired=
status=
primary user=Japan
more users=
produced=1934 - 1945
number built=5,770
variants with their own articles=The Yokosuka K5Y was a two seater unequal-span biplane trainer aircraft (Allied codename: "Willow") that served in the Imperial Japanese Navy during the World War II.

Due to its bright orange paint scheme (applied to all Japanese military trainers for visibility), it earned the nickname "aka-tombo", or "red dragonfly", after a type of insect common throughout Japan. The aircraft was based on the Yokosuka Type 91 Trainer, but stability problems led to a redesign by Kawanishi in 1933. It entered service in 1934 as a land-based K5Y1 with a fixed tail-skid landing gear, and remained in use throughout the war. Floatplane types K5Y2 and K5Y3 were also produced. After the initial 60 examples by Kawanishi, manufacture was continued by Watanabe (556 aircraft built), Mitsubishi (60), Hitachi (1,393), First Naval Air Technical Arsenal (75), Nakajima (24), Nippon (2,733), and Fuji (896), for a total of 5,770. These aircraft were the mainstay of Imperial Japanese Navy Air Service's flight training, and as intermediate trainers they were capable of performing demanding aerobatics.

Variants

* K5Y1 : Two-seat intermediate trainer for the Imperial Japanese Navy.
* K5Y2 : Floatplane version, with Amakaze 11.
* K5Y3 : Floatplane, with 384 kW (515 hp) Amakaze 21 engine.

Projected but not built were two land-based variants, the K5Y4 with 358 kW (480 hp) Amakaze 21A engine and the K5Y5 with 384 kW (515 hp) Amakaze 15.

pecifications (K5Y1)

aircraft specifications

plane or copter?=plane
jet or prop?=prop

crew=Two
length main=8.05 m
length alt=26 ft 5 in
span main=11.0 m
span alt=36 ft 1 in
height main=3.20 m
height alt=10 ft 6 in
area main=27.7 m²
area alt=298.2 ft²
airfoil=
empty weight main=1,000 kg
empty weight alt=2,205 lb
loaded weight main=
loaded weight alt=
useful load main=
useful load alt=
max takeoff weight main=1,500 kg
max takeoff weight alt=3,307 lb
engine (prop)=Hitachi Amakaze 11
type of prop=9-cylinder air-cooled radial engine
number of props=1
power main=225 kW
power alt=300 hp
max speed main=212 km/h
max speed alt=132 mph
cruise speed main=138 km/h
cruise speed alt=86 mph
stall speed main=
stall speed alt=
never exceed speed main=
never exceed speed alt=
range main=1,020 km
range alt=635 mi
ceiling main=5,700 m
ceiling alt=18,700 ft
climb rate main=3.7 m/s
climb rate alt=730 ft/min
loading main= kg/m²
loading alt= lb/ft²
power/mass main= kW/kg
power/mass alt= hp/lb
armament=
* 1x 7.7 mm fixed forward-firing Type 89 machine gun
* 1x 7.7 mm Type 92 machine gun on rotating mount
* Up to 100 kg of bombs on external racks

ee also

aircontent
related=
similar aircraft=
*Arado Ar 66
*Avro 626
*Breda Ba.25

see also=

References

* Mondey, David. The Concise Guide to Axis Aircraft of World War II. ISBN 1 85152 966 7
* Tagaya, Osamu. Imperial Japanese Naval Aviator 1937-45. ISBN 978 1 84176 385 9
* http://www.combinedfleet.com/ijna/k5y.htm