Development of Battle Damage Aircraft Tires.
FRANKLIN INST RESEARCH LABS PHILADELPHIA PA
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The development of a tire aircraft assembly filled with pressurized spheres of tough thermoplastic polyurethane elastomer was accomplished. A new modified blow-molding process was developed to produce spheres of superior structural integrity without the use of adhesives. The largest practical size of the sphere was determined to be two inches in diameter at the rated inflation pressure 90 psig of the 9.50 x 16 aircraft tire. Evaluation of various packing configurations has shown that randomly placed loose individual spheres perform best. Techniques and assembly fixtures were successfully employed to fill the tire in the decompression chamber. In this case, the static load deflection curve obtained for the unpressurized sphere filled tire corresponds to that of an 80 psig air inflated tire. Author, modified-PL