I dont know Im trying to figure it out myself!
A helicopter and a calculator
Leonardo da Vinci did not actually 'make' a helicopter, he just drew his concept of it.
Leonardo did not make them, he imagined them and drew them around 1500.
No but he made the glider.
No, there is no big church conspiracy as far a Leonardo da Vinci is concerned.
A paper which is created into a helicopter and used in games. Usually instructions on how to make a paper helicopter are found in classes by a teacher or found in tutorials on online websites such as youtube or on other websites.
Take the paper clip off and make it smaller.
Trial and error. There are many different ways to make a paper aeroplane - some may be better than others.
Leonardo da vinci made many futuristic inventions of his time like an Armored Car (early tank), Flying Machine, Ornithopter Flying Machine (early helicopter), Parachute, Artillery and an Eight Barreled Machine Gun. These are more of the famous inventions of Leonardo's many creations.
with helicopter mod
There is a great website on Google if you type in 'Make Playing Helicopter':)
He invented a spiral contraption that is similar to a modern day design of the helicopter and also built wings that he thought could make a person fly but later realized that birds have hollow bones whereas people have heavy, solid bones. Other than that, I don't know... Hope I helped.