In this decade, development of advanced stealth aircraft continued at a low but steady pace.  Unlike the 1950s, during which America had an "anything goes" attitude toward experimental aircraft development, the 1990s were a time of deliberate and focused goal-specific technology research. 

Like in the 1990s, models of contemporary X-planes were few and far between, but those that did make it to market boasted designs that were as sleek and sinister as anything out of an old science-fiction fantasy.

X-Planes & Prototypes

1900-1930

1940s

1950s

1960s

1970s

1980s

1990s

2000s

2010s