登入選單
返回Google圖書搜尋
The Aviation History Or New Aircraft I Color
Relly Victoria PetrescuFlorian Ion Petrescu
其他書名
Create Space Usa 2013
出版CreateSpace Independent Publishing Platform, 2013-03-15
主題Transportation / Aviation / General
ISBN14827770619781482777062
URLhttp://books.google.com.hk/books?id=hwy1mgEACAAJ&hl=&source=gbs_api
註釋!A Synchrotron like this, in the size of a stadium or more..., built like a flying ship, could carry from 30,000 to 500,000 passengers.! This may become a flying city. Stealth aircraft are aircraft that use stealth technology to avoid detection by employing a combination of features to interfere with radar as well as reduce visibility in the infrared, visual, audio, and radio frequency (RF) spectrum. Development of stealth technology likely began in Germany during World War II. Well-known modern examples of stealth aircraft include the United States' F-117 Nighthawk (1981-2008), the B-2 Spirit, the F-22 Raptor, and the F-35 Lightning II. While no aircraft is totally invisible to radar, stealth aircraft prevent conventional radar from detecting or tracking the aircraft effectively, reducing the odds of a successful attack. Stealth is the combination of passive low observable (LO) features and active emitters such as Low Probability of Intercept Radars, radios and laser designators. These are usually combined with active defenses such as chaff, flares, and ECM. It is accomplished by using a complex design philosophy to reduce the ability of an opponent's sensors to detect, track, or attack the stealth aircraft. This philosophy also takes into account the heat, sound, and other emissions of the aircraft as these can also be used to locate it.