Stealth technology prevents objects from being detected by radar systems and is widely used in the world’s advanced armies
Date: 27/04/2011, 6:34 PM Author: IDF (Zahal) Website
1. “Stealth” is the nickname given to aircrafts, ships or missiles not detected by radar systems (object detection systems).
2. An object can become invisible to radar systems through reduction of its RCS (Radar Cross-Section, which measures how detectable an object is to a radar), through “destructive interference”, or emission of a counter signal, by returning a misleading signal to the radar system or by “swallowing” the radar signals with special coating.
3. Stealth submarines have quiet engines and can swallow sound signals. They detect sound using sonar systems (often underwater systems for navigating, etc.) to analyze returning sound waves.
4. Currently, only the US Army uses of stealth aircrafts operationally. These are the strategic B-2 heavy bomber and the F-22 fighter jet, designed to succeed the F-15. The F-35 fighter jet is in development and has been ordered by several militaries in the world, including the IAF.
5. At the end of 2010, it was discovered that the Chinese Army is testing a locally developed stealth aircraft namely the J-20, its first pictures already published in the media.