The Excalibur Army T815 Patriot 4×4 Tactical Armoured Personnel Carrier, also known as the MATMMV (Medium Armored Tactical Multi-Mission Vehicle), was created by Excalibur Army, a wholly owned subsidiary of the Excalibur Czechoslovak group. Thanks to the proven chassis by Tatra Trucks the vehicle provides excellent driving properties in any terrain, and the modular concept allows for many modifications according to the user’s (both military and civil) needs. The T815 Patriot is developed using internal research and development funding and is based on the 4×4 Tatra Force chassis, which features adjustable ground clearance, a central backbone tube, independent swinging air suspended half axles designed to improve cross-country mobility and ride comfort.
The layout of the Patriot is conventional, with an engine compatment in the front and a crew compartment in the middle. In the basic variant the vehicle can carry a crew of 2 + 4 fully armed and equiped soldiers. Layout of the T815 Patriot is conventional with the powerpack at the front and the crew compartment to the immediate rear. The crew comprises the commander and driver, with provision for up to four dismounts. The Patriot is developed using internal research and development funding and is based on the 4×4 Tatra Force chassis, which features adjustable ground clearance, a central backbone tube, independent swinging air suspended half axles designed to improve cross-country mobility and ride comfort.
The 6.7 l Cummons ISB diesel engine offers 210 kW and gives the vehicle it’s top road speed of 110 km/h. The vehicle is powered by a Cummins ISB 6-cylinder diesel engine with power of 210 kW, coupled with an Allison 3200SP automatic transmission with six front and one rear gears. This provides a top speed of 130 km/h and a range of up to 500 km. It is also equipped with 14.00xR20 wheels with flat tires and a central tire inflation system (CTIS) that allows the driver to adjust tire pressure during driving. The vehicle can overcome vertical obstacles with a height of up to 500 mm and cross a trench 900 mm wide. A water obstacle up to 1 m deep can pass without preparation.
The welded steel cabine has a patented bolted design, which the company calls the “Kitted Hull Concept”. The vehicle provides standard ballistic protection STANAG 4569 Level 3 against small arms (7.62×51mm AP at 30 meters with 930 m/s) and Level 2a/2b anti-mine protection (6 kg Blast AT Mine, 2a – Mine Explosion pressure activated under any wheel or track location, and 2b – Mine Explosion under center). In its base variant, Patriot is capable of transporting 6 people with equipment and provides CBRN protection. Ballistic protection is at level 3 NIJ. Armament, as a rule, includes a remote controlled weaapon station (RWS) mounted on the roof, armed with a 7.62 mm or 12.7 mm machine gun or 40-mm automatic grenade launcher.