Stealth

Stealth aircraft use a variety of techneiques and are designed in such a way to reflect and or absorb radar. Before we learn how stealth works, we must first understand radar. Radar is a technique that was developed by Britain in the middle of WWII to detect when enemy planes were coming. An antena emits radio waves out into the air. When the radio waves hit something (a plane) it reflects back. How ever long it takes the radio waves to return is how far away the plane is. The goal of stealth technology is to make the airplane invisable to radar. To make a plane invisable to radar, one of two things must be done. Conventional Airplanes are designed and engineered to be aerodynamic (round) which also is very effective at reflecting the radar signal. Stealth aircraft on the other hand have very sharp angles to reflect the radar signal away from the source.
 * The airplane can be shaped so that any radar signals it reflects are reflected away from the radar equipment.
 * The airplane can be covered in materials that absorb radar signals.

Stealth technology started out just for planes but now are for a variety of things. The technology works in the same way but can also be applied to ships, submarines, and missels. Stealth technology still costs a lot to make and intigrade into vehichles and planes. Stealth planes are not that widely used for this reson. They are simply to expensive. Also stealth is not perfect, even though good stealth planes can absorb/reflect most of the radio waves sometimes small amount are reflected back making the plane appear as a bird or other small object. When planes bank sometimes the stealth countermeasures temporarally fail, making them visable for a short amount of time. By: Brydon __Referneces:__

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