What’s so interesting about a Hind flying in the sky? Well its because this one doesn’t have its rotors moving and still flies! This is called the Wagon-Wheel Effect where the eyes perceive a spoked wheel to rotate more slowly than the true rotation hence the optical illusion of the immobile rotors. If you think this is a toy Hind, the 2nd clip would prove this wrong.

Hind UFO – Wagon Wheel Effect – Hemmy.Net