Grigorovich I-Z

__NOTOC__ Infobox Aircraft
name=I-Z


caption=
type=Fighter
national origin=Soviet Union
manufacturer=Grigorovich
designer=
first flight=avyear|1931
introduced=
retired=
status=
primary user=Soviet Air Force
more users=
produced=
number built=73
variants with their own articles=The Grigorovich I-Z was a fighter aircraft developed in the Soviet Union during the 1930s. Advances in aircraft survivability thanks to all-metal construction and self-sealing and inert gas-filled fuel tanks led to experimentation with large-caliber weapons to shoot them down. In Soviet Union, L. V. Kurchevskiy developed a series of recoilless rifles in various calibers and in 1930 was decided to adapt the 76.2 mm (3 in) weapons for aircraft use.

The result was a conventional strut-braced monoplane with fixed landing gear. A pair of APK rifles were mounted under the wings outside the propeller arc and the rear fuselage and tail assembly were of reinforced metal construction to withstand the blast. A single small-caliber synchronized machine gun in the left fuselage was added to aid the pilot in aiming.

Two prototypes were built, the first flying in mid-1931. The second strengthened I-Zbis flew at the beginning of the following year. These were followed by 21 examples ordered as evaluation aircraft and 50 production machines. By the time this last batch was being delivered, however, it was already apparent that the concept of a "single-shot" fighter was flawed and the I-Zs that had been built were relegated to various testing roles. One such role was as a parasite fighter in the Zveno project.

pecifications (I-Z)

aircraft specifications
plane or copter?=plane
jet or prop?=prop
ref=Shavrov 1985cite book|author=Shavrov V.B.|year=1985|title=Istoriia konstruktskii samoletov v SSSR do 1938 g. (3izd.)|language=Russian|publisher=Mashinostroenie|id=ISBN 5-217-03112-3]
met or eng?= met
crew=One
capacity=
length main=7.65 m
length alt=25 ft 1 in
span main=11.5 m
span alt=37 ft 9 in
height main=
height alt=
area main=19.5 m²
area alt=209.9 ft²
airfoil=
empty weight main=1,180 kg
empty weight alt=2,601 lb
loaded weight main=1,648 kg
loaded weight alt=3,633 lb
max takeoff weight main=
max takeoff weight alt=
more general=
engine (prop)=M-22
type of prop=radial engine
number of props=1
power main=358 kW
power alt=480 hp
max speed main=259 km/h
max speed alt=140 knots, 161 mph
max speed more=
cruise speed main=
cruise speed alt=
cruise speed more=
range main=600 km
range alt=324 nm, 373 mi
range more=
ferry range main=
ferry range alt=
ferry range more=
ceiling main=7,000 m
ceiling alt=23,000 ft
celing more=
climb rate main=
climb rate alt=
climb rate more=
loading main=85 kg/m²
loading alt=17 lb/ft²
thrust/weight=
power/mass main=217 W/kg
power/mass alt=0.13 hp/lb
more performance=
*Time to altitude: 14 min to 5,000 m (16,400 ft)
*Horizontal turn time: 17 sec
armament=
*1×7.62 mm (0.3 in) PV-1 machine gun
*2×76.2 mm (3 in) Kurchevski DRP (APK) cannon

ee also

aircontent
see also=
related=
similar aircraft=
*Tupolev I-12
lists=

References

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