In order to meet the needs of new flight vehicles in future, the ceramic fiber rigid insulation titles
were heat鄄treated at 1 200益for 30 min, and the mass loss, the linear shrinkage rate along xy and z directions, the
thermal insulation performance and the microstructure of it were investigated. The results indicate that the variations of
that performance are very small except the linear shrinkage rate along z direction (3. 19%). Comprehensively consid鄄
ering all performance of the rigid insulation titles, the reusability of it can reach up to 20 times.