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ATPI - High performance damping technology for Aircraft vibration attenuation and Thermo-Phonic Insulation |
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Start date |
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2004.12.01 |
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Duration |
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18 months |
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EC Program Ref.: |
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6th FP
Aeronautics & Space Program |
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To find new materials coping with the existing damping technology; |
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To examine in detail the cork characteristics, in order to optimise the use of its damping and thermal factors; |
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To modify the existing design (or find new shapes) accommodating the new materials while keeping the improved performances; |
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To simulate the new damping compound technology for vibration and acoustic characteristics; |
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To estimate its performances; |
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To prototype and validate by testing, the acquired principles. |
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ATPI project aims at setting up a Shared Cost Project the goal of which is to find a new technology of damping treatment providing high vibration and thermo-phonic performances in association with present blanket used for aeronautic applications. It will lead to better insulate the cabin from both vibrations, acoustic and thermal exterior annoyances. Furthermore, as it will be placed below the glass wool, it will prevent from capturing humidity.
The purpose of the project is to research and find a new light damping technology adapted to thin shell structure (fuselage skin) including noticeable thermo-phonic insulation performances. The technology will be based on ARTEC patented damping surfacic technology, which reduces significantly noise and vibration levels of thin shell structures, providing unexpected performances.
The latter developed for general vibration issues of thin shell structures, is not suitable for aerospace use and therefore a research must be done towards new materials along with new assembling technology to meet the specific requirements: light weight, high damping performances, thermal and phonic insulation, and stringent environmental conditions.
Combined with standard acoustic material (glass wool, …), the global solution will therefore drastically increase the thermo-acoustic performance.
Community as well as passenger acceptance is essential for the commercial success of a new aircraft. Hence, environmental cabin comfort issues are important for any turbofan or turbo-propeller aircraft - from business jet to large civil transport - and are becoming more and more important as a market factor. These small range and small capacity aircraft's are more and more necessary, but their main drawback is the passenger comfort, which must be improved.
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EXPECTED RESULTS |
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Representative simulation of compound damping technology incorporating the new materials
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High damping performances for vibrations and noise
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Lower weight than conventional devices at similar performances
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High spin off possibilities for aeronautics, when large temperature range will be possible for the damping technology.
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Prototype and quantifiable verification of damping efficiency of aircraft skin, using this innovative thermo- phonic technology.
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Validation of innovative principles for a future aircraft use.
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maintenance and overhauling smart system (maintenance cost)
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The final achievement of the A.T.P.I. research will be the inclusion of the here above achievements, in a future system with the target of reducing vibration and acoustic transmission by a factor of 2 assuming the same weight than conventional devices, or reducing the weight by a factor 2 assuming the same damping performance than conventional devices.
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