Dogtrousers
Lefty tighty. Get it righty.
I remember reading about that. The thing that really scuppered it was the weight of the shielding required to protect the crew. The Soviets also had a similar project and, as they weren't slaves to health and safety gone mad, actually got it to fly. And fry too, as far as the crews were concerned.
Looks like I was not entirely right about this.The Soviets did work on such a craft, and it did fly, but not under nuclear power. It was just a regular jet that happened to also carry a crew-frying reactor.
Wikipedia says that the "the whole concept of nuclear airplane propulsion was evaluated [by the Soviets] as too expensive and environmentally dangerous."
Given that in the1950s neither the US nor the Soviets were exactly tree hugging environmentalists I think we can interpret that as "was evaluated as being as stupid as it sounds, if not stupider"