Grigorovich TB-5 ( _ru. Григорович ТБ-5) was an experimental heavy bomber designed and tested in the Soviet Union in the early 1930s. Designed as a competitor for TB-3, TB-5 was intended to be powered by two FAD 24-cylinder X engines of 746 kW (1,000 hp) each. When these were canceled, the underwing pods were revised to each house a pair of Bristol Jupiter engines in a push-pull configuration. Despite projected performance inferior to TB-3, it was hoped that TB-5 would gain an advantage by using less metal (in short supply at the time) thanks to its mixed construction of fabric-covered metal frame.
Test flights began on 1 May 1931 with disappointing results, in part due to poor thrust of the rear-facing engines. When the superior TB-3 entered service the following year, the TB-5 project was abandoned.
pecifications (TB-5)
aircraft specifications
plane or copter?=plane
jet or prop?=prop
ref=Shavrov 1985[cite book|author=Shavrov V.B.|year=1985|title=Istoriia konstruktskii samoletov v SSSR do 1938 g. (3 izd.)|language=Russian|publisher=Mashinostroenie|id=ISBN 5-217-03112-3] ]
crew=
capacity=
payload main=
payload alt=
payload more=
length main=22.1 m
length alt=72 ft 6 in
span main=31 m
span alt=101 ft 8 in
height main=
height alt=
area main=150 m²
area alt=1614.6 ft²
airfoil=
empty weight main=7,483 kg
empty weight alt=16,497 lb
loaded weight main=12,535 kg
loaded weight alt=27,635 lb
max takeoff weight main=
max takeoff weight alt=
more general=
engine (prop)=Bristol Jupiter V
type of prop=radial engines
number of props=4
power main=336 kW
power alt=450 hp
max speed main=180 km/h
max speed alt=97 knots, 112 mph
max speed more=
cruise speed main=
cruise speed alt=
cruise speed more=
range main=
range alt=
range more=
ferry range main=
ferry range alt=
ferry range more=
ceiling main=2,600 m
ceiling alt=8,530 ft
celing more=
climb rate main=
climb rate alt=
climb rate more=
loading main=84 kg/m²
loading alt=17 lb/ft²
thrust/weight=
power/mass main=107 W/kg
power/mass alt=0.07 hp/lb
more performance=
armament=
*Two turrets, each with 2× 7.62 mm (0.3 in) PV-1 machine guns
*Up to 2,500 kg (5,512 lb) of bombs
avionics=
ee also
aircontent
see also=
related=
similar aircraft=
*TB-3
*Farman F.220
lists=
References
