Lightweight trusses with anisotropic effective thermal expansion connecting the main satellite body and a remote platform are designed to passively accommodate large temperature variation at orbiting around the Earth. Every truss consists of identical units with members that can be made of different materials. Unit members are pin-connected to the satellite, the platform, and between each other. Effective thermal expansion of the truss coincides with the thermal expansion of the platform material on the upper level of the truss, the thermal expansion of the satellite material on the lower level of the truss, and equals to zero along the truss height. Because of this, the trusses provide a constant, independent of temperature, distance between the satellite and the platform preventing misalignment of optical systems located on the platform and serve as adapters eliminating thermal expansion mismatch stresses arising at the points of member junction to the satellite and the platform. Six different unit configurations are designed, and various material combinations for unit members are considered. The geometry of the truss unit depends on the coefficient of thermal expansion of the satellite, the platform and the truss member materials. Stiffness and structural efficiency at uniaxial loading are calculated for every configuration and compared with each other. Material combinations providing maximum stiffness or structural efficiency depend on the platform size. The trusses do not need thermal deformation control or isolation. Examples of unit design are presented; it is noticeable that the adaptive trusses can be made of a single material.

具有各向异性有效热膨胀的轻型桁架，可将卫星主体与远程平台连接起来，旨在被动适应地球绕轨道运行时的较大温度变化。每个桁架都由相同的单元组成，其单元可以用不同的材料制成。单元成员通过销钉连接到卫星，平台以及彼此之间。桁架的有效热膨胀与平台材料在桁架上层的热膨胀，附属材料在桁架下层的热膨胀相一致，并且沿着桁架高度等于零。因此，桁架提供了恒定的，不受温度影响的，卫星和平台之间的距离可防止位于平台上的光学系统发生未对准，并用作适配器，以消除在成员与卫星和平台的接合点产生的热膨胀失配应力。设计了六种不同的单元配置，并考虑了单元成员的各种材料组合。桁架单元的几何形状取决于卫星，平台和桁架构件材料的热膨胀系数。针对每种配置计算单轴载荷下的刚度和结构效率，并将其相互比较。提供最大刚度或结构效率的材料组合取决于平台尺寸。桁架不需要热变形控制或隔离。介绍了单元设计的示例；