Development Status and Prospect of Lattice Sandwich Active Cooling Structure

Abstract

The lattice structure is of the periodic structure with regular shape. It has the characteristics of high specific strength,high specific rigidity,light weight and high heat transfer efficiency,and is recognized as a structural material with wide application prospects. Applying the lattice structure to the active cooling technology to form a lattice active cooling structure is an effective means to solve the thermal protection problem of scramjet. The development of lattice structure is inseparable from the progress of preparation technology. In this paper,the principle and research status of traditional machining technology and additive manufacturing technology are overviewed,and the influence of the lattice structure unit,design size and the synergy with other structures on the heat transfer characteristics is summarized through literature research. On this basis,the potential application value of the lattice sandwich active cooling structure in scramjet is analyzed,and further development suggestions for its engineering applications are put forward.

Keywords

• lattice structure
• active cooling
• preparation technology
• heat transfer characteristics
• scramjet