A science initiative led by Southwest Research Institute (SwRI) envisions the creation of a "space bus" to provide refueling services in space. The development is part of the $25.5 million Space Mobility and Logistics (SML) project, funded by the US Space Force and implemented by prime contractor Astroscale US.
The goal of the project is to develop a demonstration spacecraft called Astroscale Prototype Servicer for Refueling (APS-R), which will refuel satellites in geostationary orbit.
APS-R is designed to transport hydrazine fuel to satellites in geostationary orbit located at an altitude of approximately 35,800 km above the equator, many of which are used for telecommunications purposes. The device will follow a circular orbit in accordance with the rotation of the Earth, providing refueling satellites with compatible refueling ports.
SwRI plans to build a "space bus" for APS-R within the next 16 months. The weight of the device will be about 198 kg, including fuel, with maximum dimensions of 61×71×114 cm when folded. The launch of the finished spacecraft is scheduled for 2026.
Such technology will not only extend the period of operation of satellites, but also make it possible to save significant funds, taking into account the fact that the creation and launch of one satellite for observing the Earth costs millions of dollars. In addition, the development could help solve the problem of space debris, which poses a significant threat to space infrastructure and future missions.
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