Abstract. This article presents a model of a compact adaptive gear variator designed for use in space technology and high-tech systems. Reducing the mass of spacecraft, increasing efficiency, and ensuring reliability are among the most relevant challenges in modern science and engineering. In this context, gear variators especially adaptive types are of great interest due to their ability to efficiently control motion and adapt to system conditions. The article describes the structural features of an advanced gear variator based on an adaptive transmission mechanism. Its operating principle is visualized using a 3D model and animation created in SolidWorks. The drive automatically adjusts the gear ratio between the input and output shafts, enabling parameter changes in response to external loads. These features make the device particularly suitable for use in orbital spacecraft, solar panel orientation systems, maneuvering propulsion systems, and other complex mechanisms. The results of the study confirm the model’s compactness, energy efficiency, and high reliability through analytical calculations and numerical simulations. Furthermore, this research builds upon the theoretical foundations of adaptive mechanisms and expands their potential application in aerospace engineering. The proposed improved model may serve as an innovative solution in the design of next-generation engineering systems. The purpose of the article is to create a simple and compact variator model for the space industry.

Keywords: adaptive gear, variator, kinematic chain, SolidWorks model, space technology, compact drive systems, energy efficiency, automatic control, gear ratio.