DARPA Kicks Off Design, Fabrication for DRACO Experimental NTR Vehicle
July 27, 2023 | DARPAEstimated reading time: 1 minute
DARPA, in collaboration with NASA, is advancing toward the goal of the world’s first in-orbit demonstration of a nuclear thermal rocket (NTR) engine via DRACO, the Demonstration Rocket for Agile Cislunar Operations. DARPA has finalized an agreement with Lockheed Martin for the company to begin work on the fabrication and design of the experimental NTR vehicle (X-NTRV) and its engine.
“The DRACO program aims to give the nation leap-ahead propulsion capability,” said Dr. Tabitha Dodson, program manager for the effort. “An NTR achieves high thrust similar to in-space chemical propulsion but is two-to-three-times more efficient. With a successful demonstration, we could significantly advance humanity’s means for going faster and farther in space and pave the way for the future deployment for all fission-based nuclear space technologies.”
In January, DARPA and NASA signed an agreement to collaborate on the NTR engine, with a focus on more efficiently and quickly transporting material through the cislunar domain and eventually, people to Mars.
The DRACO program takes advantage of the nation’s early investments in nuclear thermal technology via the previous Nuclear Engine for Rocket Vehicle Applications (NERVA) program, but with a new fuel option that presents fewer logistical hurdles. DARPA is using high-assay low-enriched uranium (HALEU) fuel, made possible via National Security Presidential Memorandum 20 (NSPM-20), which updated U.S. policy for the launch of space nuclear power and propulsion. As an additional safety measure, DARPA will engineer the system so that the engine’s fission reactor will stay turned off until it reaches its designated orbit.
The U.S. Space Force will provide the launch vehicle that will take the X-NTRV into space in 2027. The Department of Energy will provide HALEU metal, to be processed into fuel by the performer. BWX Technologies (BWXT), one of Lockheed Martin’s partners in the effort, will develop the nuclear reactor and fabricate the HALEU fuel.
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