## 1 Introduction
As a result, the resonance frequency of the satellite structure composed of lattice sandwich panels can be much greater than that of the same-weight aluminum honeycomb panels. An ultralightweight bracket structure for a satellite was attained in [34] utilizing a topology optimization-based lattice infill technique. In [35], an octagonal truss lattice structure is used to construct a lightweight compressor impeller. The mass of the impeller is reduced from 195.3 g to 149.4 g after the solid portion inside the hub was replaced with a lattice construction. The residual deformation of the lattice compressor impeller may be decreased by 20.19% when compared to the solid compressor impeller. The residual stress of the lattice compressor impeller may be lowered by 8.72%. In [36] a lightweight phase-change thermal controller structure based on lattice cells is presented. The structure is made completely of AlSi10 Mg using PBF-LB/M. The structure's mass was 190 g, which is 60% lighter than most typical constructions of the same size (500-600 g). The thermal controller absorbs 60 J/cm\({}^{2}\) of heat energy per unit area. The energy capabilities of thermal controllers of the same size built using a conventional process,on the other hand, are around 40 J/cm\({}^{2}\). Therefore, the thermal capacity of the lattice-based thermal controller was improved by 50% when compared to typical controllers of the same volume. Besides these relevant properties, materials fabricated by PBF-LB/M shows differences between the corresponding alloys fabricated via traditional methods such as casting and forging. The rapid cooling results in a non-equilibrium solidification process leading to grain refinement, the formation of metastable phases, and preferential grain growth [37]. The aluminum alloys exhibit a very fine microstructure as compared to the traditional methods such as casting, forging, extrusion and powder metallurgy which can provoke defects in the final produced parts [38]. The low cooling rate of a traditional casting process determines a coarse microstructure, and many other defects such as shrinkage porosity, slag inclusion and element segregation decrease the mechanical properties of the fabricated part [39]. Conversely, the strength of a part produced by PBF-LB/M is increased by the in-situ formation of an amorphous, ultrafine-grained structure, especially in Si-rich aluminum such as AlSi10 Mg [40,41]. This fine microstructure permits improving hardness, tensile and compressive strengths, fatigue performance, creep, impact, and wear resistance; the only drawback that remains is the lack of ductility which can be solved by using thermal treatments. [42]. Nevertheless, some specific defects such as thermally induced residual stresses, gas porosities, oxide layers, and un-melted material can occur during the PBF-LB/M process [43]. As a result, the crack initiation and propagation can be facilitated resulting in significantly reduced fatigue properties with respect to the same material manufactured by casting or forging [44]. Another issue limiting the PBF-LB/M is the attainable roughness, which is affected by the balling phenomenon, pores, and satellite that can be reduced by optimal selection of the processing parameters but not eliminated; also, the accuracy of as-built parts, are poorer than the wrought and machined counterparts [45]. The PBF-LB/M surface finish significantly impacts high-frequency applications resulting in microwave loss and requiring post-processing techniques [46]. Lastly, tribological performance is lower than traditional AlSi10 Mg cast alloy [47]. Despite these drawbacks, PBF-LB/M shows outstanding advantages in manufacturing complex-shaped parts such as a lattice structure giving a part design with an exceptional degree of freedom. The present work investigates ways to redesign and fabricate PBF-LB/M modular platforms of satellites made by lattice structures.