1962
Prototypes & demonstrators Boeing Quiet Bird
One of the first aircraft designed for a low radar return
LH 1977
Prototypes & demonstrators Lockheed Have Blue
The first full-size stealth demonstrator
NT 1982
Prototypes & demonstrators Northrop Tacit Blue
Demonstrator for curved stealth surfaces and a stealthy battlefield radar; its lessons went into the B-2.
BB 1996
Prototypes & demonstrators Boeing Bird of Prey
Secret demonstrator with a stealthy shape, flown from 1996 to 1999 and revealed in 2002.
MD 1997
Prototypes & demonstrators McDonnell Douglas X-36
Remotely piloted research aircraft without tail fins, for more stealth and agility.
SS 1997
Prototypes & demonstrators Sukhoi Su-47 Berkut
Experimental fighter with forward-swept wings, used to test technology for later Russian fighters.
SC 2024
Prototypes & demonstrators Scaled Composites Model 437 Vanguard
Demonstrator for a low-cost, long-range stealthy combat aircraft that can fly with or without a pilot.
EM
Prototypes & demonstrators EADS Mako / HEAT
European concept for a supersonic trainer and light combat aircraft with a stealthy shape; never built.
No stealth aircraft found.