Increased F135 TMS Aluminum Component Performance (1001-614)

Triton Systems, Inc. proposes to enhance elevated temperature resistance of cast aluminum components in the JSF F-135 engine fuel & lube systems by incorporating Fiber Reinforced Aluminum (FRA) inserts into highly stressed areas of the castings. The F-135 gearbox is made from a sand cast aluminum alloy. At 400 degrees F, the tensile strength of this alloy is approximately 20ksi. While this strength level is sufficient for most portions of the gearbox, local stresses near mounting lugs and power shafting may approach or exceed these levels. Triton"s FRA alloy exhibits a tensile strength of 65 ksi at and a compressive yield strength of 60 ksi at 400 degrees F. We are proposing to develop techniques to incorporate FRA inserts into those areas of the gearbox where the baseline alloy strength is inadequate.