Flying may become a more serene experience for those traveling on the new 737 NG Boeing Business Jet. Engineers have completed tests on a new active noise and vibration control system, supplied by the LORD Corp., which has provided engine isolators and mounts, hydraulic pump, and interior isolators for a variety of aircraft. Sound pressure levels dropped an average of 8 to 12 decibels for N1 engine tones. That's significant, especially when you consider that decibels are logarithms of sound levels. Now, if only someone could do something about those screaming babies.
Although plastics make up only about 11% of all US municipal solid waste, many are actually more energy-dense than coal. Converting these non-recycled plastics into energy with existing technologies could reduce US coal consumption, as well as boost domestic energy reserves, says a new study.
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