AVIATION & AERONAUTIC CALCULATOR
Mean Aerodynamic Chord
A precise tool.
What is the Mean Aerodynamic Chord & How does it work?
The mean aerodynamic chord (MAC) is a crucial parameter in aviation and aeronautics, representing the average aerodynamic chord of an airfoil. It simplifies the analysis of lift distribution across the wing.
text{MAC} = frac{2}{3} times left( frac{b}{tan(Lambda)} – frac{b}{tan(Lambda + Delta)} right) times c_0
b = wingspan, Lambda = sweep angle at quarter chord, Delta = dihedral angle, c_0 = root chord length
The MAC is essential for calculating the center of pressure and moments on the wing, aiding in the design and stability analysis of aircraft.
Parameters
Result
β
Frequently Asked Questions
What is the mean aerodynamic chord (MAC) in aviation?
The MAC is a key parameter representing the average aerodynamic chord of an airfoil, simplifying lift distribution analysis.
How do you calculate the MAC for an aircraft wing?
Use the formula: MAC = (2/3) * [(b / tan(Ξ)) – (b / tan(Ξ + Ξ))] * cβ, where b is wingspan, Ξ is sweep angle at quarter chord, Ξ is dihedral angle, and cβ is root chord length.
Why is the MAC important in aircraft design?
The MAC helps determine the center of pressure and moments on the wing, crucial for stability and control calculations.
Can you explain the components of the MAC formula?
The formula includes wingspan (b), sweep angle at quarter chord (Ξ), dihedral angle (Ξ), and root chord length (cβ) to account for wing geometry variations.
What is the difference between MAC and geometric chord?
MAC represents the average aerodynamic chord, while the geometric chord varies along the span of the wing.
How does dihedral angle affect the MAC calculation?
The dihedral angle (Ξ) in the formula adjusts for the upward angle of the wings relative to the horizontal plane.
Is there a specific unit for MAC?
MAC is typically expressed in the same units as the wing dimensions, such as meters or feet.
Results are for informational purposes only and do not constitute professional advice.