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The Basic Principle Of Flight Essay

990 words - 4 pages

Flight has been a dream of mankind, after the completion of the first powered airplane flight initiative from the Wright brothers, aviation technology is changing rapidly. From ancient light aircraft to a hundred tons airliner or even a fighter jet that flexible than eagle, flying technology has become one of the amazing achievement in science and technology.
Aerodynamics is a fundamental principle of flight and civil aircraft unit, in order to have the ability to move on the sky, the force balance of the air lift must be greater than weight and the thrust is greater than the drag. An airplane uses wings for lift and thrust engines. Drag is reduced by the smooth shape of an airplane and its weight is controlled by the materials from which it is constructed.

Lift
Following Bernoulli principle, to be able to launch aircraft (on the bottom of the wing due to a pressure difference between the different flow rates) has subsequently led to the overthrow of the lift; the aircraft cannot be explained as inverted. We should be able to generate lift comes boundary layer theory, it simply due to the speed of the air flow through the wing of the discontinuity caused vortex, the angle of attack (the angle of the wing air flow) when the larger, higher lift coefficient rise the stronger, but beyond a certain angle of attack will not generate lift stall. Of course, it has very complex calculations on that.
Drag
When the object forward, as long as physical body that is propelled through the air will experience resistance, this resistance is called drag. If the cross-sectional area in contact with the forward direction of the greater relative, air resistance will be greater, in addition to friction (stiction due to fluid there) and induced drag (decreased force generated by the wing end).
Weight
The weight of the object itself generated gravity. Weight can be calculated using a form of Newton's second law: W = mg (Where W is weight, m is mass, and g is the acceleration due to gravity on Earth.)
Thrust
Thrust is a force that push plane to forward, to be able to to keep moving plane need more thrust than drag. Thrust itself is a force that can best be described by Newton's second law. The basic form of this law is: F = ma (Which states that force (F) is equal to mass (m) times acceleration (a). Acceleration is the rate of change of velocity over time. Thrust (T) is produced therefore by accelerating a mass of air.)


Then let’s discuss about the basic aircraft control objects (wings, tail, elevator, rudder and ailerons). Basically the center of gravity of aircraft is located near the wing. When the body of aircraft want to lift up, its depend to the elevator up to the horizontal stabilizer on the body. When the aircraft want to turn, the rudder and aileron is needed. But if just rely...

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