Variants
Other X-43 vehicles were designed, but as of November 2004 appear to have been suspended. They were expected to have the same basic body design as the X-43A, though the aircraft were expected to be moderately to significantly larger in size.
Read more about this topic: NASA X-43
Famous quotes containing the word variants:
“Nationalist pride, like other variants of pride, can be a substitute for self-respect.”
—Eric Hoffer (1902–1983)