A coupled thermostructural analysis of the dual-layer woven thermal protection system, called the Heatshield for Extreme Entry Environment Technology (HEEET) project, was performed under radiative heating conditions. The initial analysis performed under the assumption of constant stiffness provided poor agreement with experiments. It was therefore concluded that significant stiffness degradation might be occurring in the recession layer of HEEET as the material is heated. Stiffness degradation studies were subsequently performed that indicate a monotonic decrease in stiffness with temperature in the temperature range of interest: a trend that is initially comparable to carbon cloth phenolic (CCPs), with deviations at higher temperatures that are postulated to be due to differences in material composition and microstructural differences between the HEEET and the CCPs.
Data-Driven Analysis of the Stiffness Degradation of a Woven Thermal Protection System
Journal of Spacecraft and Rockets ; 59 , 5 ; 1475-1485
2022-05-16
11 pages
Article (Journal)
Electronic Resource
English