SILENCE(R) - Significantly lower community exposure to aircraft noise
Overview
Background & policy context:
SILENCE(R) is the largest European Commission research project dedicated to aircraft noise reduction, a major cause of concern around European airports. The project is focussed on the development of aircraft noise reduction technologies, and its main objectives were the validation of individual technologies and a cost/benefit analysis of technological applications across the product range.
Objectives:
The project addresses the issue of aircraft noise through three major objectives:
- Large scale validation of noise reduction technologies whose development was initiated by EU and national projects in '98.
- Assessment of the applicability of these technologies to current and future European products with minimum cost, weight or performance penalty.
- Determination of the associated achievable noise reduction, novel concepts to be validated include low-noise fans, combustors and LP turbines, scared intakes, novel intake, bypass and hot-stream liners, nozzle jet noise suppressors, active control techniques and airframe noise reduction technologies.
Unless this technology can be developed and validated to reduce aircraft noise, traffic is likely to be limited by noise restrictions, affecting indirectly general economic growth.
Methodology:
The project is focussed on the development of aircraft noise reduction technologies, and the task involved the validation of individual technologies and a cost/benefit analysis of technological applications across the product range. Research spanned several main areas, including engine and airframe source noise, nachelle technologies and active control.
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