What are Stealth Aircrafts?
Aircraft that use stealth technology to avoid getting detected by radar while navigating in air are known as stealth aircraft. It also reduced visibility of the aircraft in the infrared, visual, audio, and radio frequency (RF) spectrum. Development of stealth technology likely began in Germany during World War II.
Some modern examples of stealth aircraft include the United States’ F-117 Nighthawk (1981–2008), the B-2 Spirit, the F-22 Raptor, etc. A stealth aircraft is made up of completely flat surfaces and very sharp edges. When a radar signal hits a stealth plane, the signal reflects away at an angle beyond the radar coverage. In addition, surfaces on a stealth aircraft can be designed in such a way that they absorb radar energy as well resulting in a radar signature of a small bird rather than an airplane.