Discovery of the World: Discovery of Leonardo da Vinci

Da Vinci’s Machines: Giant Crossbow

发现达文西只机械篇：巨型十字弓

Da Vinci was an Italian Renaissance polymath. He invented machines for human uses. Giant crossbow was one of his great inventions.

Crossbow was one of the famous machines used in war field. It is a gun style machine. 1480, Da Vinci interested to know more about the engineering so he decided to make a giant crossbow. That time he was at Milan. He designed the giant crossbow with four giant crossbows in a giant circle view. The top of the machines look like a solar panel but actually it is a shield which uses to protect the people whom walk outside of the machine. Da Vinci’s idea was the four crossbows can be shoot out in a shorter time and able to hit the target. The machines required human power to activate it.

With the idea of Da Vinci, I have modified the machine with my own idea. I plan to activate by using solar power. The color of the solar panel is black which is able to absorb the sunlight. Then, the solar power will turn into kinetic energy and make the crossbow able to be shooting out. The crossbow will be shooting out in four directions. There is a small motor at the stage. It functions as turning the solar energy into kinetic energy.

Here are some of the pictures of my own giant crossbow.