Are all Leonardo Da Vinci's notes and sketches in the public domain?

Yes, the original images and text are in the public domain, but the problem is that they are on paper owned by a number of different organizations and kept in various conditions. When the owners publish books or pictures, they own the copyright of that exact image and whether you are able to use it will depend on various rules, etc. including institution and country of ownership and publication.

For that reason, there is absolutely no way that all of the material will ever be available on one site.

Unfortunately, most of Leonardo's innovations remained on paper, but lots of those drawings were remarkably just like later inventions, eg., an armored vehicle similar to a tank, multi-barreled missile launchers, and shells that a 21st-century soldier would most certainly admire. There are additionally sketches for a lifestyles preserver, a parachute, rolling machines for sheet iron,and mechanical saws and drills. Additionally, he was satisfied that a computing device might be developed that would enable man to emerge as airborne. Many of his flying innovations have been just like orthopters (machines with flapping wings) and flying machines very similar to helicopters. He additionally drew plans for tremendous canals and underground visitors techniques. Despite all of the suggestions that stayed most effective on paper, Leonardo invented a giant range of useful gadgets, corresponding to the first locks for canals. When you discuss with the site under, you're going to to find drawings of just 12 of his inventions and/or ideas.