an innovation in
AIRCRAFT NOISE REDUCTION by John-Paul Clarke
Most attempts to reduce the noise impact of landing aircraft are expensiveâ€”modifying aircraft, soundproofing buildings, buying and demolishing
Itâ€™s no surprise: community concerns about air-
homes. But now, an innovative MIT-developed
craft noise are constraining the growth of aviation.
landing procedure is reducing the noise of land-
Because of the increasingly active and aggressive
ing planes, cutting aircraft operating costs, and generating a great deal of interest at airports around the world.
legal opposition to airport expansion by residents in impacted communities, many runway expansion projects have been delayed or abandoned. The net effect is
fewer that less than five additional runways have been built at the 30 busiest US airports within the last 10 years resulting in greater delays and congestion. Since airports are the nodes of the air transportation system, capacity limitations at the busiest nodes limit the capacity of the entire system. A number of measures have been adopted to address the issue of aircraft noise. These measures include: phasing out noisier aircraft and introducing aircraft with quieter engine technology; enforcing nighttime curfews on the operation of some or all aircraft; and insulating (or purchasing and demolishing) homes that are severely impacted by aircraft noise. While these measures have reduced the impact of aircraft noise, they have not lessened the opposition to airport expansion. Given the relatively wide implementation of the measures described above, and the potential capacity crisis in the national and international airspace system, there is a critical need for new solutions.
An innovation in Aircraft Noise Reduction