Study on the Equivalent Thermal Conductivity of Superalloy Honeycomb Core Structures

The equivalent thermal conductivity of superalloy honeycomb core structures have been studied by experimental method. Test results show that the decrease in honeycomb core height and the increase in honeycomb core diameter would lead to a lower equivalent thermal conductivity for superalloy honeycomb cores. Filling adiabatic materials such as ZrO2 fibers and SiO2 aerogels into core cells would significantly reduce the equivalent thermal conductivity of honeycomb cores with a minor penalty in structure weight.