What do you call a person that designs aircraft?

Answer 1

Designers develop a model based on the design brief, which is a summary of the expected characteristics and capabilities of the aircraft. Aeronautical engineers then draw the aircraft and all of its related components so that it will operate as required and include other factors such as manufacturing considerations and fuel economy. Aeronautical engineers also design 'aftermarket' components so that they won't force the aircraft outside of it operating envelope (eg, floats on planes, hooks on helicopters)