Heat dissipation characteristics and lightweight evaluation of lattice structure

As the core component of aviation rudder control, the pursuit of a high power-to-weight ratio for an electro-hydrostatic actuator (EHA) requires efficient heat dissipation and a lightweight integrated design for its components. Reliable data for assessing lattice structure heat dissipation and lightweight performance is provided by this paper’s experimental study of the heat dissipation properties of four common lightweight lattice structures and the temperature distribution properties of various lattice heat dissipation modules. Based on the heat dissipation characteristics of lattice structures, an evaluation index of the heat dissipation lightweight coefficient of lattice structures is proposed to quantitatively evaluate the lightweight characteristics of different heat dissipation lattice structures. The four types of lattice structures are assessed using the evaluation index developed in this research, and the findings indicate that the OT lattice structure has the best combined lightweight and heat dissipation performance. Compared with the fin structure, the heat dissipation coefficient of the OT lattice structure is 1.2 times that of the fin, but its heat dissipation lightweight coefficient is only about 1/3 of that of the fin. This study provides a theoretical basis for the screening of the lattice structure considering both heat dissipation and lightweight.