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- Timeline of invention (28171 bytes)
3: ...s ambiguity, the date of the first practical, fielded version of the invention is used here.
60: * [[Odometer]] : [[Ancient Rome|Rome]]: [[Archimedes]]?
66: ...ntury BC|200s BC]]: Compound [[pulley]]: [[Archimedes]]
74: * [[1st century]]: [[Rudder|Stern mounted rudder]] in [[History of China|China]]
83: * [[9th century|800s]]: [[Black powder|Gunpowder]] in [[History of China|China]] - Aviation history (39698 bytes)
3: ...[The Bible]]. Nevertheless, it exemplifies man's desire to fly.
5: ...rping the planes' wings ([[Wright brothers]]). Modern planes are controlled by [[computer]]s, which c...
15: ... also sketched designs for a helicopter, but this design would not have flown.
17: ... for powered flight until the [[gasoline]] engine designed by the Wright Brothers.
19: ...d understanding of the relationship between altitude and the atmosphere. - Aircraft (13315 bytes)
15: ... use a spinning rotor (a ''rotary wing'') to provide both lift and thrust. The abbreviation [[VTOL]] i...
18: ...n particular, these aircraft use a relatively low density gas such as [[helium]], [[hydrogen]] or heat...
24: Below, we describe classifications by design, propulsion and usage.
29: ====By design====
33: A first division by design among aircraft is between lighter-than-air, '... - Helicopter (20080 bytes)
1: ...b>fixed-wing aircraft</b>. The word helicopter is derived from the [[Greek language|Greek]] words ''he...
3: ...] Company (USA) [[Robinson R44|R44]], a four seat development of the [[Robinson R22|R22]].]]
5: ...ject only to refuelling facilities and load/altitude limitations, a helicopter can travel to any locat...
9: ...ransportation, casualty evacuation (including [[MEDEVAC]], and [[search and rescue|air/sea/mountain re...
13: ...ry AD]] book in China that described some of the ideas in a rotary wing aircraft. - Jet engine (22370 bytes)
1: ... the front of the engine (left of photo) prevents debris - or people - from being pulled into the engi...
4: ...ally ignited by flame in the eddy of a [[flame holder]], and burned as an atomized mixture. The [[comb...
6: ...(especially [[supersonic]] speeds) and high altitudes. On slower aircraft and those required to fly sh...
10: ...of peripheral fitted is dependent on the aircraft design application.
15: ...''', or simply '''jet''') engine, as subsequently developed, would become almost as revolutionary to a...
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