airframe
I am interested in aircraft, especially airplane engines and structure. I have studied for five years in Japan about aviation maintenance at my high school and my college which have aeronautical engineering departments. Needless to say, I am majoring in the aviation maintenance technology. Aircraft are eminently related to physics. I therefore chose this book, ?gAirframe?h. I think that a person who is interested in aviation would feel interested in this book. I have already studied about some flight dynamics in Japan. I am therefore going to write about lift and a stall, wing curvature, axis of an airplane in flight, and my doubt in the book. The book gives an example of an airplane bound from Hong Kong to Dallas, TPA 545, which stalled on its way to Dallas. The circumstance was that the plane suddenly descended and went up, then it stalled and went down again. However, the pilots of the plane recovered the airplane?fs balance and altitude, and the airplane made an emergency landing at Los Angeles airport. I am going to write about the reason why airplanes can fly before I write about a stall, because it is easy to understand a stall when the physics of flight are understood. Airplanes can fly by making use of lift
. Air usually flows are both the upper and lower wing?fs surfaces. There are differences in airspeed and air pressure between air flowing over the upper side and air flowing under the lower side of a wing. The air flowing over the upper side is faster than the opposite sides air, and the air pressure on upper side is lower than the opposite air pressure. The power to lift up, which is called lift, therefore acts on the wing, and the phenomenon is known as Bernoulli?fs principle. These are the reasons why airplanes can fly. I have my doubt about contents of this book. There was an airplane accident, the explosion of its left engine, at Miami International Airport, and Casey referred to the accident. The misadventure was made by unsuitable maintenance, the left wing absorbed flying splinters, and protected the passengers in the cabin. However, I cannot agree with his opinion. The airplane would explode if the flying high temperature fragments by the engine explosion went through the wing or did not go through the wing. The airplane explosion is unavoidable because they could damage the fuel tank which causes explosion. Usually, airplanes have fuel tanks in their wings. One of the reasons is efficient utilization of fuselages. Other reason is to reduce vertical motion of the wings. The wings make lift, and the power lifts up them. However, when the airplanes are on the ground, gravitation pulls down the wings. There is a vertical motion on the wings. This motion makes metal fatigue to the roots of the wings. This fatigue can sever the wings from the body. If airplanes have their fuel tanks in their wings, they can lessen the vertical motion and prevent the metal fatigue. In my opinion, although high temperature fragments by the engine burst damaged the left wing which has a fuel tank, fortunately all of the passengers did not be killed by the accident. Motion about longitudinal axis of an airplane is roll and is produced by movement of the ailerons located at the trailing edges of the wings. Lowering the
Some common words found in the essay are:
Los Angeles, Airport Casey, , Dallas TPA, air flowing, airplanes fly, curvature wing, amount curvature, amount curvature wing, air flowing upper, flowing upper, air pressure, wing curvature, takes lands, vertical motion, airplanes fuel tanks, fuel tanks wings, temperature fragments engine, fuel tank,
Approximate Word count = 1379
Approximate Pages = 6 (250 words per page double spaced)
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