Image credit: NASA
Image source: NASA MSFC
Category: Integrated Program Plan
Satellite Repair
Space Tug Elements
MSFC-69-PD-4056
Image credit: NASA
Image source: National Archives
MSFC-71-PD-4000-6 B
Logistic/Cargo Transfer
Image credit: NASA
Image source: Numbers Station
255-KSC-70PC-335
Image credit: NASA
Image source: National Archives
S-69-2622
Image credit: NASA
Image credit: Mike Acs
NASA Space Tug
Image credit: NASA
Image source: Cradle of Aviation Museum
Grumman
Image credit: Grumman
Image source: Cradle of Aviation Museum
Modular Propellant Tankage Concept
Shown on this chart is an artist’s rendition of a tug configuration which is made up of individual propellant modules and thus provides extreme operational flexibility. The stage is designed to be compatible with a variable number of propellant modules which contain oxidizer, fuel and pressurants. The basic propulsion platform includes engines, control, avionics and primary structure. In concept, the configuration has the option of staging tanks for extremely high performance.
Although this modular concept is extremely versatile, it has a lower mass fraction than one which is designed for a single performance capability.
Image credit: NASA
File source: NASA NTRS
Space Tug Maintenance Concept
The overall view shows a Cislunar Shuttle being approached by an unmanned maintenance Tug. The Tug has three replacement modules attached to a turntable assembly. The first view shows an expanded section of the Cislunar Shuttle with the Tug approaching. The Tug will be docked with the Cislunar Shuttle using a standard docking mechanism. The second small view shows the Tug harddocked to the Cislunar Shuttle. A module is being removed from the Shuttle. The third small view shows the turntable rotated and a module being installed in the Cislunar Shuttle. After the operation is completed the two vehicles are demated and the Tug backed off as depicted in the lower illustration.
Image credit: NASA
File source: NASA NTRS
