To: Cyclic Hotline
The FRIENDCOPTER project aims to provide engine and cabin noise reduction, low-noise flight procedures, noise-absorbing engine inlets, methods to identify cabin noise leaks, control technology to reduce rotor noise, vibration and fuel consumption and a model rotor for testing in a wind tunnel at Mach speed.
Hughes Helicopters did ths many year ago. At 500 feet all you could hear was a whoosh.
