ORIGINAL: niche
About the surfaces balancing , this the first time I hear about it, although the pictures are explicaive, is there any good matwrial to read abount it so I understand the process and also what should I buy for doing it?
Here you have some reading:
http://findarticles.com/p/articles/m...1/ai_n8825915/
http://www.cs.wright.edu/~jslater/SD...ter_banner.pdf
The concept behind the mass balance is that a control surface that has the CG by the hinge cannot flutter.
Flutter is produced by the acceleration of the "heavy" control surface alternatively until it reaches the max deflection in both directions in a rapid succession and with great force (mass of the control surface times the acceleration).
The acceleration is a function of the air turbulence; however, we can control the mass that oscillates by moving the CG towards the hinge, which is what balancing does.
Strong linkages help hold the oscillation, slow speeds and hinge tape reduce the air turbulence, but those remedies do not eliminate the cause.