Nakajima Type 91

Infobox Aircraft
name=Type 91


caption=
type=Fighter
manufacturer="'Nakajima
designer=
first flight=
introduced=1931
retired=1937
status=out of service
primary user=Imperial Japanese Army
more users=
produced=1931-1934
number built=450cite book |last= Mikesh|first= Robert C|coauthors= Abe, Shorzoe |title= Japanese Aircraft 1910-1941|year= 1990|publisher= Putnam Aeronautical Books|location=London|pages=214-215 |isbn= 0 85177 840 2]
unit cost=
variants with their own articles=The Nakajima Type 91 was a Japanese fighter of the 1930s.It was a single-engine, single-seat parasol monoplane with a fixed, tailwheel undercarriage.

Development

Designed in response to an Army requirement of 1927, [cite web|url= http://avia.ltd.ee/air/japan/nakajima-91.php |title= Virtual Aircraft Museum ] the Type 91 was developed from the NC series of fighter prototypes. The prototype was the sixth machine under that designation but was a fundamentally distinct airframe design. Compared to the earlier NC, the Type 91 had a smaller wing, relocated fuel tank and wing bracing struts, Townend ring-type cowling, new design tail and undercarriage.cite book |url= |title=The Complete Book of Fighters |last=Green |first=William |year= 1994|publisher= Smithmark |isbn= 0-8317-3939-8] It first flew in 1931.

Operational history

The Army ordered the new aircraft as the Type 91 and the first deliveries took place late in 1931. However, issues arose with both directional stability and centre of gravity, with the result that the type was delayed entering service.

Between 1931 and 1934, 420 aircraft were constructed (including 100 by Ishikawajima; 23 of the total were Type 91-2, powered by a 432-kW (580-hp) Nakajima Kotobuki 2 radial. This version first flew in July 1934.

The Type was supplanted in service by the Kawasaki Type 95 in 1936-7.

Variants

;Type 91-1:Main production version, powered by 336 kW (450 hp) Nakajima built Jupiter radial engine. ;Type 91-2:Improved version, powered by Nakajima Kotobuki. 21 built.

pecifications (Type 91-1)

aircraft specifications

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

ref=The Complete Book of Fighters

crew=1
capacity=
length main= 7.26 m
length alt= 23 ft 9¾ in
span main= 11.00 m
span alt= 36 ft 1 in
height main= 2.79 m
height alt= 9 ft 1¾ in
area main= 20.0 m²
area alt= 215.28 ft²
airfoil=
empty weight main= 1,075 kg
empty weight alt= 2,370 lb
loaded weight main= 1,530 kg
loaded weight alt= 3,373 lb
useful load main=
useful load alt=
max takeoff weight main=
max takeoff weight alt=
more general=

engine (prop)=Bristol Jupiter VII
type of prop=9-cylinder radial
number of props=1
power main= 388 kW
power alt= 520 hp
power original=

max speed main= 300 km/h
max speed alt= 162 knots, 186 mph
cruise speed main=
cruise speed alt=
stall speed main=
stall speed alt=
never exceed speed main=
never exceed speed alt=
range main=
range alt=
ceiling main= 9,000 m
ceiling alt= 29,500 ft
climb rate main=
climb rate alt=
loading main= kg/m²
loading alt= lb/ft²
thrust/weight=
power/mass main= W/kg
power/mass alt= hp/lb
more performance=
* Time to 3,000 ft (9,845 ft): 4.0 min
* Endurance: 2 hrs
armament=Two fixed 7.7 mm machine guns

avionics=

References

External links

ee also

aircontent

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similar aircraft=

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