Description Leonardo Da Vinci Sketch of a Flying Machine. These designs were inspired by his observations of the natural world. Philoponus in the 6th century noted, in his Theory of Impetus, that an object moving in a fluid must have some resistance or force from the fluid, which moved around the object. Made in 3DSMAX 2022.Render in vray 5 You can edit texture in Photoshop. Hope you like it. Thanks.