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AN ASSESSMENT OF THE IMPACT OF EMERGING HIGH-TEMPERATURE MATERIALS ON ENGINE CYCLE PERFORMANCE

机译：新兴高温材料对发动机循环性能影响的评估

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摘要

Rising concerns about air quality and climate change have made environmental protection one of the most critical issues in aviation today. To achieve environmental protection that allows sustained long-term aviation growth, NASA Glenn (GRC) has been engaged in the development of advanced high-temperature materials and thermal and environmental barrier coatings under its Fundamental Aeronautics and Environmentally Responsible Aviation Programs, with specific objectives to increase engine operating temperature and efficiency, reduce cooling requirements, reduce engine weight, reduce fuel consumption, and increase engine reliability. A parametric study was performed to assess the impact of these advanced materials and coatings on engine performance, with thrust-specific fuel consumption (TSFC) and LTO (landing-and-takeoff) NOx emissions as the key metrics. An ultra-high bypass ratio (UHB) separate flow turbofan engine for an advanced twin-engine single-aisle transport (B737/A320 class aircraft), with a sea-level static thrust of 107-kN thrust (23,000-pound), was chosen for the study. This paper presents the engine performance benefits from these advanced materials and coatings.
机译：对空气质量和气候变化的日益关注使环境保护成为当今航空业最关键的问题之一。为了实现可持续的长期航空增长的环境保护，美国宇航局格伦（GRC）一直在其基础航空和对环境负责的航空计划下，致力于开发先进的高温材料以及热和环境屏障涂层，其具体目标是提高发动机工作温度和效率，降低冷却要求，减轻发动机重量，减少燃油消耗并提高发动机可靠性。进行了一项参数研究，以评估这些先进材料和涂层对发动机性能的影响，其中推力比燃料消耗（TSFC）和LTO（着陆和起飞）NOx排放量为关键指标。适用于高级双引擎单通道运输（B737 / A320类飞机）的超高旁路比（UHB）分离流涡扇发动机，其海平面静推力为107 kN推力（23,000磅）。选择进行研究。本文介绍了这些先进材料和涂层对发动机性能的好处。

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