what is a "work"(like invention) created by Leonardo da Vinci?

Question

how was this work viewed at the time it was created

Answer 1

The scissors.

Answer 2

Leonardo da Vinci did not invent the helicopter.
Leonardo rarely deviated from the principle of beating wings in his inventions. One exception is the design on Manuscript B Fol 83v for an “aerial screw”, which has led to false claim that he invented the helicopter. Leonardo’s invention is based on a helical screw 10 meters in diameter and not rotary blades. But the drawing does express the scientific principle that when the air is compressed it has density, which was to find its application much later in the propeller or helicopter.

Leonardo’s machine was supposed to lift off when rotated, but one might well ask how the force required to achieve sufficient rotating speed would be obtained. It is likely that his device was not for manner flight but was intended for a public spectacle. Nonetheless, it’s nice to think that Leonardo’s drawing may have inspired Igor Sikorsky’s invention of the first stable, single rotor controllable helicopter, having been reputedly shown Leonardo’s drawing by his mother.

His innovations in the field of painting influenced the course of Italian art for more than a century after his death. Because they were not easily decipherable, Leonardo's findings were not disseminated in his own lifetime; had they been published, they would have revolutionized the science of the 16th century. Leonardo actually anticipated many discoveries of modern times. In anatomy he studied the circulation of the blood and the action of the eye.

He made discoveries in meteorology and geology, learned the effect of the moon on the tides, foreshadowed modern conceptions of continent formation, and surmised the nature of fossil shells. He was among the originators of the science of hydraulics and probably devised the hydrometer; his scheme for the canalization of rivers still has practical value. He invented a large number of ingenious machines, many potentially useful, among them an underwater diving suit. His flying devices, although not practicable, embodied sound principles of aerodynamics.

Answer 3

I think da Vinci made a sketch of a plane that looks a lot like the Wright Brother's plane.

Answer 4

The parachute,tank,cannon.robot

Answer 5

ornithopter, parachute ( shaped like an inverted pyramid), war machines, etc.

Answer 6

helicopter, viewed as weird, strange, impractical, impossible

Answer 7

helicopter

they thought he was out of his freaking gourd