Teleoperator Retrieval System 3D model

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The Teleoperator Retrieval System (TRS) was a orbital tug proposed by NASA. Its primary mission was to perform a reboost of the Skylab space station, prior to refurbishment and reactivation by a series of Space Shuttle missions. For the Skylab Boost Mission, TRS would be carried to orbit by a Space Shuttle, and dock to Skylab's forward port under its own power (with the Shuttle crew remotely piloting the tug). It would then do a series of orbit raising burns, then separate and deorbit itself to leave the port open for Shuttle dockings.