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May11-06, 06:44 AM
Sci Advisor
FredGarvin's Avatar
P: 5,095
Noise attenuation is just a bit tougher than adding a Helmholz resonator here and "other muffling devices" there. We have been working on that since the advent of the turbine engine. And why do people immediately start thinking about ramjets, especially when we are talking about a stated noise reduction of mamoth proportions?