To: proxus
Is the silent copter a myth ?
No it is not. Many years ago Hughes took an OH-6 and modified it to an extreme. The placed a silencer on the engine exhaust, they isolated and eliminated any noise that radiated from the structure and they incorporated a five blade main rotor and an X tail rotor. In this configuration it could fly 500 feet AGL and all you would hear is a "whoosh".
