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Fuel Efficient Military Tire

Description:

OBJECTIVE: Develop a military tire for use on FMTV (Family of Medium Tactical Vehicles) with 30% lower rolling resistance than that of existing military tires while retaining 90% of the performance of existing military tires for paved road wet traction and off-road chip/chunk/tear resistance. The objective is to use for both CONUS and OCONUS. DESCRIPTION: The Army needs improved capability to enable sustainment independence/"self-sufficiency"and to reduce sustainment demands at expeditionary basing levels. The objective is to reduce the need for fuel resupply. One avenue to reduce fuel consumption is through development of a fuel efficient military tire. This project investigates technologies which would provide a fuel efficient (lower rolling resistance) military tire for reduced sustainment demands. PHASE I: Identify key components of the tire which contribute to fuel consumption and develop methods to reduce rolling resistance while maintaining key performance parameters. Develop a computer model of this fuel efficient tire detailing the differences in components and material characteristics. Fuel Efficiency will be measured based on Tire rolling Resistance values from model. Using modeling and simulation, subject tire to several loading scenarios to demonstrate improved performance in fuel consumption versus a conventional tire. The baseline tire is what currently used on the FMTV. Deliverables shall include methodology report, computer model and rolling resistance fuel efficiency results of modeling and simulation. Evaluation protocol will be based on simulated results of SAE J1269 Rolling Resistance Measurement Procedure for Passenger Car, Light Truck, and Highway Truck and Bus Tires in a laboratory environment at a matrix of temperature, pressures and load conditions. PHASE II: Using the model and simulation developed in phase 1, a prototype fuel efficient military tire would be developed and tested in a lab environment. Testing would include SAE J1269 Rolling Resistance Measurement Procedure for Passenger Car, Light Truck, and Highway Truck and Bus Tires in a laboratory environment at a matrix of temperature, pressures and load conditions. In addition, testing of fuel efficient tire would be conducted for FMVSS Regulation 49CFR Part 571.119-New Pneumatic Tires for Motor Vehicles with a GVWR of more than 4,536 kilograms (10,000 pounds). Other organizations may be interested in transitioning of this technology based on successful results Deliverables shall include 40 prototype tires in 395/85R20 size in military on/off road tread pattron, and report of laboratory testing. PHASE III: Prototype fuel efficient tires would be evaluated on a FMTV military vehicle for fuel consumption in accordance with SAE J1321 JOINT TMC/SAE FUEL CONSUMPTION TEST PROCEDURE - TYPE II, performance characteristics (braking and handling) and durability operation across mission profile conditions. The fuel efficient tires would be compared with conventional tires and measurement of fuel savings calculated. Deliverables for this phase would be prototype tires, and test report of tire testing on FMTV vehicles. This technology is applicable for all wheeled DOD-wide vehicles. REFERENCES: 1. SAE J1269 2. SAE J2452 3. ISO 18164 4. ISO 28580
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