Lifting-body designs were considered for the space shuttle when it was being developed in the 1970's, but NASA eventually settled on a more conventional winged craft.

Despite its unusual appearance, the airplane flies much like a conventional craft, and no special pilot training will be needed.

Aurelius Venport sat in the passenger seat, deep in thought, while Zufa guided their conventional craft through an asteroid belt near Ginaz.

A conventional craft (Louise said) worked in a "three-plus-one" dimensional spacetime - three spatial dimensions, plus one of time.

"They do have more conventional craft for interplanetary travel," Spock replied, putting on the screen an image of a winged metal spaceplane.

Apparently they went undetected for a while because of their conventional craft.

Look: It was twelve days from We Made It to Jinx by conventional craft, and twelve hours by Long Shot.

Much too low to be any conventional craft that he knew of.

It would move a ship a light year in one-and-a-quarter minutes, where conventional craft would cross that distance in three days.

But conventional craft had room for cargo.