The guidance unit would be moved from the top of the third stage to the top of the second stage.

Even after tossing in additional guidance units for test missiles and for spare parts, this is small volume.

It slid open at the silent urging of their guidance unit.

"Go into an orbit while I wake up the canister's guidance unit."

In seconds it hit the ground, smashing the guidance unit, but it had done its job perfectly.

The android removed one of his internal guidance units, saw melted connections, and sighed mentally.

That would save components all down the line, and the guidance units would just have to go into storage if they didn't use them.

Well, the internal wiring inside the guidance unit was getting old, no question about it.

The exact flight path which takes into account the range to the target is calculated by the guidance unit.

The items included several lights, a guidance unit and various radios and computers.