In the 1980s, rapid advances in computer technology coupled with breakthroughs in composite engineered ushered in a whole new era of experimental aircraft.  "Stealth" planes -- aircraft that were all but invisible to conventional radar and infrared tracking systems -- were the focus of America's aeronautical research efforts, efforts that ultimately yielded excellent dividends. 

Because this stealth research was conducted in ultra-secrecy, models of the actual aircraft were not available to the public until the aircraft themselves were operational. 

LOCKHEED F-117 STEALTH FIGHTER (1981)

NORTHROP TACIT BLUE (1982)

MBB LAMPYRIDAE (1987)

NORTHROP GRUMMAN B-2 STEALTH BOMBER (1988)

X-Planes & Prototypes

1900-1930

1940s

1950s

1960s

1970s

1980s

1990s

2000 and Beyond