Whats the important of aerodynamic for building of model aircraft?

Question

i mean: what we need from aerodynamic for designing of model aircraft?

Answer 1

If you are asking if it is necessary to know about aerodynamics in order to build a flying model aircraft, not always!  You can get through many of the problems by trial and error, and raw power.  If you study a little about aerodynamics, a model will be much easier to build and control.  The basics are easy to learn and will greatly simplify the trial and error process.  That is why it is possible to make a model lawnmower fly! lol. hope this helps.

Answer 2

you should know the laws of aerodynamics before building the model aircraft. because you have to design in such a way that aircraft should move smoothly in the air without the friction with the air molecules. i mean, the air molecules should move smoothly around the surface of the aircraft when aircraft is flying. if you know the laws of aerodynamics then only you can build an aircraft which will be friction free with the air molecules.