This is a cutaway of the Radiamic liquid-fuel thruster. It was also designed C-1, for Common Engine. Starting in 1965, it was produced by the Reaction Motors Division of the Thiokol Chemical ...

The small rocket, powered by the company's 2,000-pound-thrust engine, launched from a rail in New Mexico. The vehicle flew for about half a minute, and, as planned, did not break the sound barrier.