NASA is planning to continue the development
and demonstration of space transportation technology through the use of experimental
vehicles. Two series of demonstrators are planned.
“Pathfinder” vehicles are flight experiments
whose purpose is to demonstrate a key technology in flight. They are done quickly,
for low costs, and for a wide range of technologies and applications.
“Trailblazer” vehicles are larger integrated
vehicles that demonstrate the technology, operation, and programatic viability
of an advanced technology transportation system.
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