Osorio Brazilian Main Battle Tank (MBT)
Brazilian Osorio Main Battle Tank
Main Battle Tank (MBT)
Other
Basic Information
Name
Osorio Brazilian Main Battle Tank (MBT)
Designation
Brazilian Osorio Main Battle Tank
Alternate Designation
Brazilian Osorio Main Battle Tank
Equipment Type
Main Battle Tank (MBT)
Manufacturer
Engesa
Date of Introduction
1985
Description
The Engesa EE-T1 Osório was a Brazilian main battle tank prototype. It was developed as a privately funded venture by Engesa, with little government support. It was intended to be sold first to Arab and other Third World countries, jump-starting production — and enabling the Brazilian Army to later place its own orders without having to fund development costs. However macro-political events including the Gulf War and American political pressure led to the tank's demise, and the tank was never acquired by the Brazilian Army.
Ground Specifications
Crew
4
Mobility Type
Tracked
Main Weapon
GIAT G Smoothbore Gun
Engine
Diesel (1040 hp)
Active Protection
Rated to defeat any anti-tank projectile over the frontal arc that was in service in 1986
NBC Protection
Yes
Max Speed
70.0 km/h
Range
550.0 km
System
Alternative Designation
Brazilian Osorio Main Battle Tank
Type
Tank
Manufacturer
Engesa
Crew
4 ea
Dimensions
Length (gun forward)
10.1 m
Barrel Length
2.97 m
Width
3.2 m
Height
2.37 m
Weight, Combat
43.7 t
Hull Length
7.13 m
Automotive
Engine Name
Dutch MWM TBD 234
Engine Type
Diesel
Engine Power
1040 hp
Cruising Range
550 km
Speed, Maximum Road
70 km/h
Speed, Average Cross
INA
Speed Maximum Swim
Not Amphibious
Gradient
60 %
Side Slope
40 %
Vertical Step
1.15 m
Fording Depth, without Preparation
1.2 m
Fording Depth, with Preparation
2 m
Ditch
3 m
Main Weapon System
System
Name
GIAT G Smoothbore Gun
Type
Machine Gun
Length, Barrel
120 mm
Weight
3500 kg
Muzzle Velocity
APFSDS: 1790m/s or HEAT: 1100m/s
Maximum Rate of Fire
12 rds/m
Maximum Elevation
18 deg
Minimum Elevation
-7 deg
Traverse Range
360 deg
Traverse Left
180 deg
Traverse Right
180 deg
Maximum Firing Range
INA
Effective Firing Range
APFSDS: 4,000m or HEAT: 3,000m
Sights
SCS-5 and LRS-5
Note #1:
Main gun is stabilized in two planes. It's aiming and turret rotation devices are based on electricity. LRS-5 is combined periscope type sight. It combines optical sight with day and thermo vision night channels, also laser rangefinder and ballistic computer. Commander's sight differs from gunners in absence of laser rangefinder and ballistic computer. It is placed in commanders turret and connected with a main gun. Commander is able to aim and to fire independently from gunner. Tank's commander use 5 periscopes for 360 degree observation.
Ammunition
Name
OFL G1
Type
APFDS
Caliber
120 mm
Basic Load
38 rounds
Complete Round
18.7 kg
Projectile
6.3 kg
Weight, sabot
3.8 kg
Material, sabot
Tungsten
Muzzle velocity
1650 m/s
Armor Penetration
500mm @ 2000m
Note #1:
It also fires APFSDS, HE, HESH, HEAT, APERS, WP, and canister rounds.
Coaxial Weapon System
System
Name
MG3
Type
General Purpose Machine gun
Caliber
7.62 mm
Length, Barrel
565 mm
Weight
11.5 kg
Muzzle Velocity
820 m/s
Maximum Rate of Fire
1000-1300 rpm
Maximum Elevation
INA
Minimum Elevation
INA
Traverse Range
360 deg
Traverse Left
180 deg
Traverse Right
180 deg
Maximum Firing Range
600 m
Effective Firing Range
200-1200 m
Magazine
INA
Sights
Open tangent iron sights
Note #1:
The other weapon system is located on the top of the roof.
Ammunition
Name
INA
Type
Rifle
Caliber
7.62 mm
Cartridge
7.62x51NATO mm
Basic Load
1000 rd
Armor Penetration
Yes
Auxiliary Weapon System
System
Name
M2Browning .50 Caliber Machine Gun
Type
Heavy Machine gun
Caliber
.50 mm
Length, Barrel
1143 mm
Weight
83.78 kg
Muzzle Velocity
2910 m/s
Maximum Rate of Fire
450-600 rds/m
Maximum Firing Range
7400 m
Effective Firing Range
1800 m
Magazine
INA
Sights
INA
Ammunition
Name
INA
Type
INA
Caliber
12.7 mm
Cartridge
.50 BMG
Basic Load
2000 rds/m
Armor Penetration
INA
Fire Control System
Name
INA
Computerized FCS
Yes
Main Gun Stabilization
Yes
Direct Fire
INA
Indirect Fire
INA
Protection
Hull Armor
Composite armor containing steel, aluminum, carbon fibers and ceramics
Turret Armor
Composite armor containing steel, aluminum, carbon fibers and ceramics
Applique Armor
INA
Explosive Reactive Armor
INA
Active Protection System
Rated to defeat any anti-tank projectile over the frontal arc that was in service in 1986
Mine Clearing
INA
Self-Entrenching Blade
INA
NBC Protection
Yes
Smoke Equipment
INA
Automatic Fire Suppression
Yes
Details
Country of Origin
Brazil
Category
Tanks
Land > Tanks
Filter Label
O
Classification
Domain
Ground
Equipment Status
Active
Dimensions
Length
10.1 m
Width
3.2 m
Height
2.37 m
Weight
43700 kg
Operators (1)
Brazil
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