Pebblebed NTRs: Solid Fuel, but Different

Hello, and welcome back to Beyond NERVA! Today, we’re going to take a break from the closed cycle gas core nuclear thermal rocket (which I’ve been working on constantly since mid-January) to look at one of the most popular designs in modern NTR history: the pebblebed reactor! This I should have covered between solid and […]

Dumbo: America’s First Forgotten NTR

Hello, and welcome back to Beyond NERVA! Today, in our first post in the Forgotten Reactors series, we’re going back to the beginnings of astronuclear engineering, and returning to nuclear thermal propulsion as well, looking at one of the reactors that’s had a cult following since the 1950s: the pachydermal rocket known as DUMBO. In […]