"For example, the turbine of the V-2 rocket was spun with steam ..." Steam technology and rocket technology have a shared history. That kind of bottleneck sha

"For example, the turbine of the V-2 rocket was spun with steam ..." Steam technology and rocket technology have a shared history. That kind of bottleneck shape that a is quintessential shape of a rocket engine, is actually a Steam-Engine-era technology called a de Laval nozzle. I didn't know they used a tiny steam engine inside a V-2. I think it's cool that the design of such an old technology, the steam engine, lives on inside the design of such a new technology, the rocket.