Word: radar
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Materials: The Stealth is made not of metal, for the most part, but of a substance that includes graphite, epoxy resins, plastic and asbestos filaments. These materials absorb and diffuse radar waves. Special radar-absorbent paints also may be used...
Nearly 40 years of research into the art of blinding radar's all-seeing eye have made the basic technology well enough known-to the Soviets, among others-to permit a general description of the Stealth's features...
Size: The smaller a plane, the less surface it presents to radar waves. Thus the prototype Stealth aircraft undoubtedly is small. Jane's All the World's Aircraft, the authoritative catalogue compiled in England, reports that the early version was a single-seater, presumably about the size of a fighter...
Shape: Sharp angles and large projections-engine pods, for example -reflect radar waves well; curving lines do not. Accordingly, the Stealth is slickly streamlined...
...heat-seeking devices. According to the Armed Forces Journal, the exhaust nozzles are bent at odd angles, dispersing the fumes in a pattern that confuses heat sensors, such as those aboard Soviet ground-or air-launched missiles. Stealth employs electronic countermeasures-secret, computerized devices that send out confusing radar signals...