الموضوع: Aircraft for Amateurs
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قديم 07-07-09, 06:05 PM

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معلومات العضو
المنتصر
مشرف عام

الصورة الرمزية المنتصر

إحصائية العضو





المنتصر غير متواجد حالياً

رسالتي للجميع

افتراضي



 

Bank Angle




Banking



Pushing the control stick in the cockpit to the left or right makes the on one wing go down and the ailerons on the other wing go up. This makes the plane tip to the left or right. This is called Banking. Banking makes the plane turn. Like a bicycle, the plane tilts, or banks, as it turns. This process is also called.



Cockpit



Where the pilot sits. All of the controls and instruments are located here.



Control Stick



The are connected to the Control Stick which is located in Pushing the stick to the left or to the right makes the ailerons on one wing go down and the ailerons on the other wing go up. This makes the plane tip to the left or right. This is called This tipping is also called.



Drag



One of the four basic principles of flight. Drag is the force encountered as an airplane pushes through the air, which tends to slow the airplane down. There are two types of drag, and an airplane must fight its way through both kinds of drag in order to maintain steady flight.



Profile or parasite drag is the same kind of drag experienced from all objects in a flow. Cars, rocks, and hockey pucks must all overcome profile drag. This type of drag is caused by the airplane pushing the air out of the way as it moves forward. This drag can easily be experienced by putting your hand out the window of a moving vehicle (experienced en masse if your hand encounters something more dense than air).



The other type, called "induced drag," is the result of the production of lift (you can't get something for nothing!). This drag is the part of the force produced by the wing that is parallel to the relative wind. Objects that create lift must also overcome this induced drag, also known as drag-due-to-lift. Skin friction is a function of the surface area wetted by the airstream. Any increase in surface area will increase skin friction drag. The other component of profile drag is pressure drag. Pressure drag is a function of the size of the wake behind an object in an airstream; it can be reduced by streamlining the object in order to delay separation of the flow. A side effect of streamlining is an increase in the wetted (exposed) area and hence the skin friction, so it is important to ensure that a net reduction in drag is actually achieved when adding streamlining.


Elevators



The Elevators are movable flaps attached to the horizontal stabilizer used to change the angle of AOA of the wing which will, in turn, change the moving the airplane up and down. It is operated by moving the control stick forward or backward, which in turn moves the elevator down or up, respectively. When the pilot "moves the stick forward to make the trees bigger and back to make them smaller", it is the elevator that does the work.



Engine



This part of the plane produces or forward movement necessary to sustain flight. Thrust is one of the four basic rules behind plane flight. The engine


turns the.


Flaps



Located on the inner part of the, the Flaps help the plane fly slower. This helps to increase the force of the wing at slower speeds, like during takeoff and landing. These slower speeds make takeoff and landing distances shorter. The Flaps slide back and forth, and are controlled by a lever in the cockpit. Flaps are moved down from a streamlined position to increase the amount of lift produced at a particular airspeed.

 

 


المنتصر

يقول احد القادة القدماء وهويخاطب جنوده . ( اذا لم تكونوا مستعدين للقتال من أجل ما تروه عزيزاً عليكم , فسوف يأخذه أحد ما عاجلا أو اَجلا , واذا كنتم تفضلوا السلام على الحرية فسوف تخسرونهما معاً , واذا كنتم تفضلوا الراحة والرخاء والسلام على العدل والحرية فسوف تخسروهما جميعا ) .

   

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