Solar Orbit Transfer Vehicle

The Solar Orbit Transfer Vehicle program is developing new space capabilities around the concept of a highly mobile spacecraft. A very large velocity change capability will lead to derivative vehicles capable of asset repositioning, satellite rescuing, graveyarding, high altitude refueling, servicing, inspection, taskable earth observation and numerous space control activities. The unique concept uses highly efficient propulsion and power system that can deliver about three times the mobility of current technology. The technology uses a direct thermal transfer of solar energy into the propellant and electrical power converters. The program oriented toward development of multiple derivative concepts, advancement of component level technologies, and the integrated space experiment and demonstration of the capabilities. Several directorates of AFRL jointly support the effort; two NASA centers, and augmented by the IRAD of several industry corporations