Aoto KIKUI, Akiko MATSUO, Eiji SHIMA, Hidemi TAKAHASI, Hideyuki TAGUCHI, Shunsuke IMAMURA
DOI Number: XXX-YYY-ZZZ
Conference number: HiSST 2024-00143
This study evaluated thermal effects on a vehicle airframe of a hypersonic aircraft with a turbine-based combined-cycle (TBCC) engine. The purpose of this study is to evaluate the thermal resistance of the airframe by conducting a coupled thermal-fluid analysis of the airframe geometry designed from an aerodynamic point of view. First, a steady-state fluid analysis was performed on the vehicle airframe to confirm the flow field characteristics, such as shock waves emanating from the vehicle nose tip. The flow in the upper aircraft was accelerated by expansion waves. In the lower part of the aircraft, compression waves were generated from the engine joints, and a high pressure area was formed over the intake. In the rear of the engine, the flow was accelerated by the expanding nozzle. Second, a coupled fluid/heat transfer analysis was performed on the aircraft. There were temperature vibrations in each case.