Essay On Aviation In Aviation

The modern era of lighter-than-air flight began early in the 17th century with Galileo's experiments in which he showed that air has weight. Around 1650 Cyrano de Bergerac wrote some fantasy novels in which he described the principle of ascent using a substance (dew) he supposed to be lighter than air, and descending by releasing a controlled amount of the substance.[8] Francesco Lana de Terzi measured the pressure of air at sea level and in 1670 proposed the first scientifically credible lifting medium in the form of hollow metal spheres from which all the air had been pumped out. These would be lighter than the displaced air and able to lift an airship. His proposed methods of controlling height are still in use today; by carrying ballast which may be

Historically aviation meant only heavier-than-air flight, but nowadays it includes flying in balloons and airships.
Aeronautical science covers the practical theory of aeronautics and aviation, including operations, navigation, air safety and human factors.
A candidate pilot is likely to study for a qualification in aeronautical science.
Aeronautical engineering covers the design and construction of aircraft, including how they are powered, how they are used and how they are controlled for safe operation.[15]
A major part of aeronautical engineering is aerodynamics, the science of passage through the air.
With the increasing activity in spaceflight, nowadays aeronautics and astronautics are often combined as aerospace engineering.
The science of aerodynamics deals with the motion of air and the way that it interacts with objects in motion, such as an aircraft.
The study of aerodynamics falls broadly into three areas:
Incompressible flow occurs where the air simply moves to avoid objects, typically at subsonic speeds below that of sound (Mach 1).
Compressible flow occurs where shock waves appear at points where the air becomes compressed, typically at speeds above Mach