Northrop B-2 Spirit
Northrop Grumman · Out of production (2000) — in service
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Stealth is mostly geometry. Radar returns come from flat surfaces facing the transmitter, from sharp edges, and from cavities like engine intakes and cockpits. A stealth airframe reflects energy away from where it came from rather than absorbing it, which is why these aircraft look so unlike anything else.
The F-117 was faceted into flat panels because the radar-cross-section software of the 1970s could only solve flat plates. By the time the B-2 was designed, computing had advanced enough to model curves, which is why the later aircraft is smooth where the earlier one is angular.
The B-2 takes it furthest: a flying wing with no fuselage, no tail and no vertical surfaces at all. Twenty-one were built, and much of their performance data has never been released.
Silhouettes are sized by real wingspan — bigger aircraft draw bigger.
Northrop Grumman · Out of production (2000) — in service
Lockheed · Retired from front-line service (2008)
| Aircraft | Length | Wingspan | First flight | Status |
|---|---|---|---|---|
| Northrop B-2 Spirit | 21.03 m | 52.43 m | 1989 | Out of production (2000) — in service |
| Lockheed F-117 Nighthawk | 20.09 m | 13.20 m | 1981 | Retired from front-line service (2008) |