EE-T1 Osório

The Engesa EE-T1 Osório was a Brazilian main battle tank prototype developed by Engesa. The tank 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. Development of the tank was initially privately funded by Engesa, but cashflow issues eventually led to the Brazilian government extending a loan to assist the program. Two prototypes of the tank were built, but the EE-T1 was never adopted for service.

EE-T1 Osório
Engesa EE-T1 Osório prototype
TypeMain battle tank
Place of originBrazil
Service history
Used byBrazil
Production history
DesignerEngesa
Designed1982–86
ManufacturerEngesa
Unit cost$ 6,855,859.20 BRL,
($3,840,261.00 USD)
Produced1986
No. built2 prototypes
Specifications
Mass40.9 t (45.1 short tons; 40.3 long tons) (P1)
43.7 t (48.2 short tons; 43.0 long tons) (P2)
Length7.13 m (23 ft 5 in) (Without the tower)
9.36 m (30 ft 9 in) (P1)
10.1 m (33 ft 2 in) (P2)
Width3.26 m (10 ft 8 in)
Height2.37 m (7 ft 9 in)
2.68 m (8 ft 10 in) (P1)
2.89 m (9 ft 6 in) (P2)
Crew4 (commander, gunner, loader, driver)

Armorcomposite, including aluminum/steel, carbon fibers, and ceramics.
Main
armament
105 mm L7 rifled gun (P1),
120 mm Giat Industries G1 smoothbore gun (P2)
Secondary
armament
M2HB 12.7 mm machine gun x2
(coaxial and roof mounted)
Engine12-cylinder MWM TBD 234 Diesel engine
1,100 horsepower (820 kW)
Power/weight26 hp/tonne
TransmissionZF Friedrichshafen LSG 3000
Suspensionhydropneumatic
Operational
range
550 km (340 mi)
Maximum speed 70 km/h (43 mph)
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