Initial Prototype Evaluation of Expandable Carcass-Replaceable Tread Tire for C-130 Aircraft
Interim technical rept. May 1972-Apr 1974
GOODRICH (B F) CO AKRON OH
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The initial prototype evaluation of the expandable carcass- replaceable tread tire for the C-130 aircraft was completed. The evaluation was concerned with the design, manufacture, and performance of various replaceable tread designs, both bias and radial carcasses, in the 20.00-20 size. Derailment, the area of greatest concern on the 6.00-68 PR size, was not a problem with the 20.00-2026 PR tires evaluated. Four completely new and unexpected major performance problems were encountered. The first, belt splitting, has been solved. The second, chafing, appears to be resolved but will require additional testing. The remaining two, tread band breakage and ply separations in the belt, have not been resolved. Manufacturing difficulties were also encountered. These were classified as carcass shoulder blisters, curing bladder expansion irregularities and exposed sidewall cords. Improvements were made but these problems still exist. Current manufacturing techniques do not lend themselves to large volume production of 20.00-20 expandable carcass-relaceable tread tires. Based on the results of the Phase II program recommendations are made for resolving the performance and manufacturing problems which would ultimately lead to production capability and performance acceptance.
- Transport Aircraft