1. Consequently, the aerodynamic center moves upstream thus causing aerodynamic instability. 2. The aerodynamic center is the conceptual starting point for longitudinal stability. 3. The concept of the aerodynamic center ( AC ) is important in aerodynamics. 4. In most literature however the aerodynamic center is taken at the 25 % chord position. 5. This point is called the aerodynamic center . 6. The aerodynamic center plays an important role in analysis of the longitudinal static stability of all flying machines. 7. At supersonic airspeed, a negatively stable aircraft can exhibit positive static stability due to aerodynamic center migration. 8. Please note that in highly theoretical / analytical analysis the aerodynamic center does vary slightly and changes location. 9. The aerodynamic center occupies a fixed location on an airfoil, typically close to the quarter-chord point. 10. "' Pitching moment coefficient "'is fundamental to the definition of aerodynamic center of an airfoil.
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