XR311 Combat Support Vehicle Description The primary role of the vehicle is to provide high-performance combat mobility, both on and off road, to which end it is fitted with power steering, full-time automatic four-wheel drive, four- wheel independent torsion bar suspension, disc brakes on all wheels, three-speed automatic gearbox, centre-mounted transfer gear case with inter-axle differential and controlled-slip clutches in the front and rear differential, heavy-duty shock absorbers, low pressure tires, each with an integral high- pressure inner tube and a 5000 kg winch mounted at the front of the vehicle. The vehicle is constructed around a tubular safety cage, which protects occupants should the vehicle turn over, and is covered by a heavy-gauge sheet-metal body with a full-length skid pan fitted underneath the vehicle. The driver is seated on the left side of the vehicle with the other crew members to his right. The gunner's seat can be adjusted from the normal to a high vantage position for surveillance and the seat may also be folded vertically to permit the gunner to stand when firing weapons. Storage racks are provided for 6 TOW ATGWs or 6 rounds of 106 mm ammunition, depending on the armament installed. The glare-resistant two or three part windshield is sloped to minimize reflections and may also be folded flat or removed to permit the use of night vision equipment. The engine is at the rear of the hull and is coupled to a three- speed transmission and a chain drive transfer case. The lower end of the transfer case incorporates a limited slip differential which divides power between the front and rear differential assemblies. Each of the four wheels is suspended by double 'A' assemblies and steering and steering knuckles, and incorporates a torsion bar, spring and heavy duty shock absorbers. An aluminum armour kit developed to meet the threat as defined in the Required Operational Characteristic protects the crew, weapons, stowed rounds and engine. Variants The basic vehicle can be used for a wide variety of roles including ambulance, anti-tank, command and control, communications, convoy escort, forward air control, military police, mortar carrier and reconnaissance.