文档介绍：会计学
1
第一页，共16页。
In the modern war, who has technical superiority, who will win the war
Stealth technology is one of the most important technologies
Stealth fighter
Stealth warship
Stealth tank
第1页/共16页
第二页，共16页。
What is stealth technology ?
Accurate terms : low detectable(可探测(tàncè)） technique
第2页/共16页
第三页，共16页。
In the early days, in order to improve the survivability of the aircraft, people make the plane fly higher and faster，such as :
SR-71
U-2
But with the development of the missile, this idea is out of date
第3页/共16页
第四页，共16页。
During the 1970s, the Department of Defense launched the project to develop a stealth fighter
第4页/共16页
第五页，共16页。
In 1975 , the first generation of stealth aircraft appeared
F-117
Its radar-cross-section(RCS) is only m ²
Nighthawk(夜鹰(yè yīnɡ)）
第5页/共16页
第六页，共16页。
In 1991, the Gulf War, it slipped into the Iraqi airspace, dropped the first bomb, destroyed Iraq's air defense system and command center
It also participated in the Kosovo war and the Iraq war
第6页/共16页
第七页，共16页。
Then the third generation :
Then the . Defense Department has developed the second generation of stealth aircraft :
B-2
F-22
F-35
第7页/共16页
第八页，共16页。
By comparison we can find how to achieve stealth
Unique shape
1
Wave absorbing materials
2
reduce the heat radiation
3
第8页/共16页
第九页，共16页。
Is it true that the stealth plane will not be found?
as long as it is close enough, it will be found by radar
Passive radar(无源(wú yuán)雷达） can increase the probability of a plane being discovered
NO
第9页/共16页
第十页，共16页。