| 李瑞军，王靖凯，吴濛.自适应变循环发动机性能优势评价方法[J].航空发动机,2021,47(2):17-21 |
| 自适应变循环发动机性能优势评价方法 |
| Performance Advantage Evaluation Method of Adaptive Variable Cycle Engine |
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| DOI： |
| 中文关键词: 自适应变循环发动机 燃油消耗量 燃油效率 耗油率 性能优势 评价方法 |
| 英文关键词:adaptive variable cycle engine fuel consumption fuel efficiency specific fuel consumption performance advantages evaluation method |
| 基金项目:航空动力基础研究项目资助 |
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| 中文摘要: |
| 为了综合评价自适应变循环发动机相比常规涡扇发动机的性能优势，提出了从发动机耗油率降低和质量增加2个维度
以及从发动机耗油率、飞机燃油消耗量和燃油效率之间关系的角度来评价自适应变循环发动机性能的2种方法。结果表明：发动
机耗油率降低和质量增加之间存在某个平衡点，只有质量增加幅度小于耗油率降低幅度时，才能体现自适应变循环发动机的性能
优势，并且飞机航程越长，越能体现自适应变循环发动机耗油率降低带来的优势；发动机耗油率、飞机燃油消耗量和燃油效率之间
呈指数关系变化，当假设飞机巡航航程为3500 km、飞机升阻比为10.5时，自适应变循环发动机巡航耗油率相比常规涡扇发动机的
降低1%，可使飞机燃油消耗量减少约1.9%，飞机燃油效率提高约2.4%。 |
| 英文摘要: |
| In order to comprehensively evaluate the performance advantages of adaptive variable cycle engines compared with
conventional turbofan engines，two methods for evaluating the performance of adaptive variable cycle engines were proposed from two
dimensions of engine specific fuel consumption reduction and mass increase and the perspective of the relationship between engine
specific fuel consumption，aircraft fuel consumption and fuel efficiency. The results show that there is a balance point between the
decrease of engine specific fuel consumption and the increase of engine mass. Only when the increase of mass is less than the decrease of
specific fuel consumption can the performance advantages of adaptive variable cycle engine be reflected. The longer the flight，the better
the advantages of the reduced specific fuel consumption of the adaptive variable cycle engine. The relationship between engine specific
fuel consumption and aircraft fuel consumption and fuel efficiency is exponential. Assuming that the aircraft cruise range is 3500 km and
the lift-to-drag ratio is 10.5，the cruise specific fuel consumption of adaptive variable cycle engine can be reduced by 1% compared with
that of the conventional turbofan engine，which can reduce the aircraft fuel consumption by about 1.9% and increase the aircraft fuel
efficiency by about 2.4%. |
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