Kappe, KonstantinKonstantinKappeBihler, MichaelMichaelBihlerMorawietz, KatharinaKatharinaMorawietzPfaff, AronAronPfaffBierdel, MariusMariusBierdelHuber, JakobJakobHuberPaul, TheresaTheresaPaulHoschke, KlausKlausHoschke2023-03-012023-03-012022Note-ID: 00007B92https://publica.fraunhofer.de/handle/publica/4371452-s2.0-85127381354As a possible way to face the increasingly demanding thermal requirements in applications such as CubeSats, the use of additive manufacturing (AM) for the direct integration of a heat pipe into a curved, topology-optimized structure is investigated. With the great design freedom, the variation of manufacturing parameters and the combination of different structures, AM offers a wide range of possibilities for the design and optimization of the heat pipe and its capillary structure. At the same time, the boundary conditions of the used material and working fluid as well as the manufacturing, cleaning and filling process must be considered. The embedding of the heat pipe in the structure usually requires curvatures, which also affect the manufacturability and function. To investigate these effects, various concepts of heat pipes are designed and integrated into complex test structures. The test samples are additively manufactured from Scalmalloy® by Laser Powder Bed Fusion (LPBF) and filled with acetone as work fluid. The heat pipes then are examined in thermal experiments. The comparison reveals yet challenges of the different structural concepts and manufacturing characteristics. However, the general feasibility is demonstrated and first promising integrated heat pipes could be fabricated.enAdditive ManufacturingAdditive DesignCubeSatHeat PipeLaser Powder Bed FusionScalmalloy®conference paper