Integration of absorbing materials in composite structures for turbofan engine noise reduction

将吸波材料集成到复合材料结构中用于涡轮风扇发动机降噪

• 批准号: 522525-2017
• 负责人: Ross, Annie
• 金额: $ 9.43万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=663700
• 关键词: Integration; absorbing; materials; composite; structures

Innovative manufacturing technologies bring unprecedented opportunities for creating new materials that meet**complex and restrictive aircraft engines specifications. This major five-year collaborative project brings**technological solutions for creating novel, multifunction acoustic materials to replace traditional engine liners.**The research is motivated by increasingly stringent requirements from international regulatory boards on**aircraft noise, CO2 and NOx emissions. Sound absorption over a broad frequency range is sought in order to**respond adequately to new, high-efficiency engine configurations. The project is carried out by École**Polytechnique de Montréal and Safran, an international high-tech group and leading equipment manufacturer.**Three new disruptive technologies are investigated to produce functionalized light structures made of high**mechanical performance flight-certified resins. (1) Micro-meshed materials are produced using state-of-the-art**additive manufacturing of polymeric composites. (2) Low mechanical performance foams that are recognized**for having excellent acoustic properties are replicated with high-performance polymers using an ingenious**casting method. (3) Exotic resonator materials with twisted cavities are made through additive manufacturing.**Face sheet textures and original perforations will be explored. Various designs for integrating acoustic**materials in engine components will be tested for airworthiness. Representative-size cylindrical prototypes will**be tested with internal flow on a special engine test platform. The final outcome is a full scale technological**demonstrator, where novel acoustic liners will be integrated to a LEAP engine composite fan case.**This ambitious project is a unique opportunity to train 36 highly qualified personnel on multidisciplinary**industry problems. They will engage in developing advanced technical and scientific know-how and**international soft skills useful to the Canadian industry. Implementation of the innovative acoustic materials is**foreseen on next generation ultra-high bypass ratio engines. Devired applications to Canadian-made aircrafts**are expected through Safran Nacelles and Safran Ventilation Systems, and eventually Safran Landing Systems.

创新的制造技术带来了前所未有的机会，可以创造出符合**复杂和限制性飞机发动机规格的新材料。这个主要的五年协作项目带来了**技术解决方案，用于创建新颖的，多功能的声学材料来替代传统的发动机线性。感觉到在广泛的频率范围内的声音滥用，以便**适当响应新的高效发动机配置。该项目由国际高科技集团和领先的设备制造商Safran Polytechnique deMontréal和Safran进行。 （1）使用最先进的**聚合物公司的添加剂制造生产微型材料。 （2）使用巧妙的**铸造方法，用高性能的聚合物复制了具有出色声学性能的低机械性能泡沫**。 （3）带有扭曲空腔的外来谐振材料是通过增材制造制成的。**将探索面部板纹理和原始穿孔。将在发动机组件中集成声学**的各种设计，以测试适用性。代表大小的圆柱原型将在特殊的发动机测试平台上进行内部流程进行测试。最终结果是一个完整的技术**演示者，新颖的声学衬里将集成到Leap Engine Composite Composite Fan的案例中。他们将开发先进的技术和科学专有技术和**国际软技能对加拿大行业有用。在下一代超高旁路比引擎上预见了创新的声学材料的实施。通过Safran Nacelles和Safran通风系统以及最终的Safran Landing Systems，预计将对加拿大制造的飞机的偏差申请**。