航空航天

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1 Earth's atmosphere 1
1.1 Temperature and the atmospheric layers 1
1.2 Various atmospheric regions 2
1.3 Troposphere 2
1.4 Stratosphere 2
2 Fixed-wing aircraft 3
2.1 Types of fixed-wing aircraft 3
2.1.1 Propeller aircraft 3
2.1.2 Jet aircraft 4
2.1.3 Super sonic aircraft 5
2.1.4 Rocket-powered aircraft 5
2.1.5 Ramjet aircraft 6
3 Airbus A380 7
4 Concorde 8
4.1 Paris crash 8
4.2 Withdrawal from service 9
4.2.1 Air France 10
4.2.2 British Airways 11
5 Supersonic transport 11
6 Mach number 12
7 Earth orbit 13
8 Low Earth orbit 13
9 High Earth orbit 14
10 Geosynchronous orbit 15
11 Geostationary orbit 15
11.1 Use in artificial satellites 16
12 航空与航天有不同 16
13 “神舟六号”飞船的全方位解读 18
14 Galileo positioning system 19
14.1 History 19
14.2 International involvement 20
14.3 Political implications of Galileo project 21
14.4 System description 21
14.5 Services 21