Orbital fluid resupply can significantly increase the cost-effectiveness and operational flexibility of spacecraft, satellites, and orbiting platforms and observatories. Reusable tankers are currently being designed for transporting fluids to space. A number of options exist for transporting the fluids and propellant to the space-based user systems. The fluids can be transported to space either in the Shuttle cargo bay or using expendable launch vehicles (ELVs). Resupply can thus be accomplished either from the Shuttle bay, or the tanker can be removed from the Shuttle bay or launched on an ELV and attached to a carrier such as the Orbital Maneuvering Vehicle (OMV) or Orbital Transfer Vehicle (OTV) for transport to the user to be serviced. A third option involves locating the tanker at the space station or an unmanned platform as a quasi-permanent servicing facility or depot which returns to the ground for recycling once its tanks are depleted. Current modular tanker designs for monopropellants, bipropellants, and water for space station propulsion are discussed. Superfluid helium tankers are addressed, including trade-offs in tanker sizes, shapes to fit the range of ELVs currently available, and boil-off losses associated with longer-term (greater than 6-month) space-basing. It is concluded that the mixed fleet approach to on-orbit consumables resupply offers significant advantages to the overall logistics requirements.


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    Orbital Fluid Resupply Assessment

    Eberhardt, Ralph N. | NTRS | 1989


    Orbital Fluid Servicing and Resupply Operations

    R. N. Eberhardt / W. J. Bailey | NTIS | 1987


    Orbital spacecraft resupply technology

    Eberhardt, R. N. / Tracey, T. R. / Bailey, W. J. | NTRS | 1986


    Orbital spacecraft consumables resupply

    Dominick, Sam M. / Eberhardt, Ralph N. / Tracey, Thomas R. | NTRS | 1988


    Orbital resupply of liquid helium

    Kittel, P. | NTRS | 1986