Systems and methods for spacecraft reprovisioning

A method for reprovisioning a reprovisionable spacecraft, comprising:

• transporting a reprovisioning subassembly into orbit, the reprovisioning subassembly including at least one fuel tank, a thruster unit, a flow control system, and an electrical power control system, wherein the reprovisioning subassembly is not an independent spacecraft;
• positioning the reprovisioning subassembly in proximity with the reprovisionable spacecraft,
• wherein the reprovisioning subassembly has a mating interface for attaching the reprovisioning subassembly to the reprovisionable spacecraft, the mating interface is a robotically attachable mechanical and electrical interface, and
• wherein the reprovisioning subassembly includes a fuel tank initially containing a fuel supply having an internal fuel flow interface controlling fuel flow from the fuel tank;
• upon having an available mating interface on the reprovisionable spacecraft, attaching the reprovisioning subassembly to the available mating interface on the reprovisionable spacecraft, the attaching of the provisioning subassembly including a mechanical guide to bring together the mating interfaces of the reprovisionable spacecraft and reprovisioning assembly and a mechanical latch actuated by an external robotic end effector that closes an electrical connection between the reprovisionable spacecraft and the reprovisioning subassembly;
• and
• after the attachment of the first reprovisioning subassembly to the reprovisionable spacecraft, activating power and data via the mating interfaces between the reprovisioning subassembly and the reprovisionable spacecraft and activating internal fuel flow solely within the first reprovisioning subassembly and wherein there is no external fuel flow to the reprovisionable spacecraft.