He calls it a propulsion module, or PM.

We're building new equipment to find your propulsion module on the bottom.

She knows her business now, and all we'll have to do to get a propulsion module is send her after the next flier we see.

Once in orbit, though, there was a nuclear propulsion module waiting to power our flight back to Earth.

All components, except for the propulsion module, are mounted on the exterior of the primary structure.

The spacecraft was a 1 meter diameter sphere, with a propulsion module.

The propulsion module was contained in the interior.

It was derived from the propulsion module of the Yantar spy satellites.

With propulsion modules, so they can stay out of our path, then juke into us at the last moment.

I want to hear it, and the price of the propulsion module, too, if you've got one.