Actually most of us here with a small team and sufficient funding could probably build a plane suitable for human flight given the public domain knowledge that exists. . A non insignificant percent probably have built model planes already.
Achieving competitive warplanes could be difficult. So could making something with sufficient efficiency or reliability for regulated commercial use.
Many sufficiently motivated people have actually built their own planes since the knowledge of how to achieve heavier than air flight/aerofoils widely exists.
Achieving competitive warplanes could be difficult. So could making something with sufficient efficiency or reliability for regulated commercial use.
Many sufficiently motivated people have actually built their own planes since the knowledge of how to achieve heavier than air flight/aerofoils widely exists.