Testing of a Composite Thermal Structure to Insulate the Drivers of a Large Scale Blast/Thermal Simulator.

摘要

This report describes the developmental testing of the thermal and mechanical properties of two versions of a composite structure which were developed for insulating the walls of high-pressure vessels containing hot nitrogen gas against heat loss and the results of these tests are presented. Included herein are data on thermal diffusivity, specific heat, density, expansion coefficients, thermal conductivity and mechanical properties, as well as energy transfer and temperature profiles for each of the composite systems. A subscale driver tube assembly modeling a driver tube of a Large Blast/Thermal Simulator and consisting of a nitrogen supply system, a gas heater, and the heat-insulated driver tube complete with instrumentation was designed and constructed. A future testing program under actual operating conditions is recommended.