NASA and DARPA have chosen aerospace and defense company Lockheed Martin to develop a spacecraft with a nuclear thermal rocket engine. Announced in January, the initiative — in which BWX Technologies will provide the reactor and fuel — is dubbed the Demonstration Rocket for Agile Cislunar Operations (DRACO). The agencies aim to showcase the tech no later than 2027 with an eye toward future Mars missions.
Nuclear thermal propulsion (NTP) has several advantages over chemically propelled rockets. First, it’s two to five times more efficient, allowing ships to travel faster and farther with greater agility. In addition, its reduced propellant needs leave more room on the spaceship for storing scientific equipment and other essentials. It also provides more options for abort scenarios, as the nuclear engines make it easier to alter the ship’s trajectory for a quicker-than-expected return trip. These factors combine to make NTP (perhaps) the ideal Mars travel method.
Source: www.engadget.com
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