EFFECTS OF WEAVE ARCHITECTURE ON AEROACOUSTIC PERFORMANCE OF CERAMIC INSULATION BLANKETS

A comparison of sewn, quilted Advanced Flexible Reusable Surface Insulation (AFRSI) blankets and integrally woven core Tailorable Advanced Blanket Insulation (TABI) systems was conducted in a 170 decibel aeroacoustic environment under oscillating air loads. Preconditioning in a radiant heat source was done at both 2,000 degrees F and 2,500 degrees F before testing. It was shown. that a multilayer weave construction based on an angle interlock weave architecture was superior to other systems investigated and did not require a surface coating to enhance survivability. Single-ply TABI fabric surfaces using an insulated integrally woven core structure can survive up to 2,000 degrees F without the use of a ceramic coating to toughen the surface to the aeroacoustic noise level. AFRSI blankets required a ceramic coating in order to demonstrate comparable performance after exposure to a 2,000 degrees F radiant heat temperature.