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首页> 外文期刊>The Aeronautical Journal >Turbo-electric propulsive fuselage aircraft BLI benefits: A design space exploration using an analytical method
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Turbo-electric propulsive fuselage aircraft BLI benefits: A design space exploration using an analytical method

机译：涡轮电动推进机身飞机BLI益处：使用分析方法进行设计空间探索

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ABSTRACT Turbo-electric propulsive fuselage aircraft featuring Boundary-Layer Ingestion (BLI) are considered promising candidates to achieve the emissions reduction targets set for aviation. This paper presents an analytical method capable of estimating the BLI benefit at aircraft level, enabling a quick exploration of the propulsive fuselage design space. The design space exploration showed that the assumptions regarding the underwing turbofans and BLI fan mass estimation can have an important impact on the final fuel burn estimation. The same applies to the total efficiency assumed for the electric transmission, the range of the aircraft mission, and the propulsive efficiency of the engines used as benchmark. The regional jet and short- to medium-range aircraft classes seem to be the most promising as the ingested drag and power saving are among the largest, with long-range aircraft being just behind. The future introduction of advanced technologies, which target the reduction of vortex and wave dissipation at aircraft level, could increase the potential benefit of propulsive fuselage BLI. On the other hand, the potential benefit would be decreased if more efficient and lighter ultra high bypass ratio engines were used as benchmark.
机译：摘要涡轮电动推进机身飞机，具有边界层摄入（BLI）被认为是有希望的候选人，以实现为航空设定的减排目标。本文介绍了一种能够在飞机水平估算BLI益处的分析方法，从而快速探索推进机身设计空间。设计空间探索表明，关于型涡轮机和BLI风扇质量估计的假设可以对最终燃料燃烧估计产生重要影响。这同样适用于用于电动传输，飞机任务范围的总效率以及用作基准的发动机的推进效率。区域喷气机和短到中等飞机班似乎是最有希望的，因为摄入的阻力和节能是最大的，远程飞机落后。未来引入先进技术，目标是在飞机水平下减少涡流和波浪耗散，可以提高推进机身施加的潜在好处。另一方面，如果使用更高效和更轻的超高旁路比率，则会降低潜在的益处作为基准。

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