Question

How to find moment of inertia of a symmetrical airfoil?

Answer 1

=For a wing made of a uniform solid material, the modulus E is a simple scaling factor. The moment of inertia of the airfoil cross-sections about the bending axis x (called the bending inertia), is then related only to the airfoil shape given by the upper and lower surfaces Zu(x) and Zℓ(x).✔✔

Answer 2

Rotational inertia is important in almost all physics problems that involve mass in rotational motion. It is used to calculate angular momentum and allows us to explain (via conservation of angular momentum) how rotational motion changes when the distribution of mass changes.