Power Balance Analysis Experiments on an Axisymmetric Fuselage with an Integrated Boundary-Layer-Ingesting Fan

Corte, Biagio Della; Sluis, Martijn van; Veldhuis, L.L.M.; Rao, Arvind Gangoli

doi:10.2514/1.j060570

Cited by 8 publications

(9 citation statements)

References 31 publications

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“…This suggests that a substantial share of momentum in the fuselage boundary layer (around 20-25%), associated to the fuselage body drag, is dissipated in the flow around the contracting aft-cone of the fuselage body. This shows very good consistency with the results of a related study focussed on the study of the same fuselage geometry in a 2-D axisymmetric setup [16].…”

Section: Flow Momentum and Power Analysissupporting

confidence: 87%

“…The low total pressure and velocity region around the fuselage axis is due to the onset of a vortical structure around the fuselage hub. This structure, induced by the fan slipstream, was analyzed in detail in a previous related work [16]. Furthermore, C p t and u show a non-axisymmetric distribution over the entire slipstream annulus.…”

Section: Flowfield Downstream Of the Bli Propulsormentioning

confidence: 81%

“…At the same time, the fan stage design minimized the losses in efficiency induced by the inlet distortions due to the fuselage boundary layer [13]. A previous related work has experimentally investigated the aerodynamic performance of an axisymmetric propulsive fuselage representative of the CENTRELINE concept [16]. The study analyzed the aerodynamic interactions between the fuselage airframe and the BLI propulsor in axial inflow conditions.…”

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confidence: 99%

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Aerodynamic Performance of an Aircraft with Aft-Fuselage Boundary-Layer-Ingestion Propulsion

Corte

Sluis

Rao

et al. 2022

Journal of Aircraft

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Boundary Layer Ingestion (BLI) is a technology that promises fuel consumption benefits for future civil aircraft. However, it introduces detrimental aerodynamic interactions between the propulsor and the airframe. In particular, the inflow to the BLI propulsor is affected by the flow around the airframe elements. The non-uniform inflow can influence the fan aerodynamic, aeroacoustic and aeroelastic performance. As a consequence, the fan design needs to tolerate the inlet distortions in all the flight phases. This paper discusses an experimental study of the aerodynamic performance of an aircraft with a BLI propulsor integrated at the aft-fuselage section, representative of a Propulsive Fuselage Concept (PFC) aircraft. Aerodynamic load measurements show that the BLI propulsor affects the longitudinal and lateral-directional equilibrium of the aircraft in off-cruise conditions. Flow measurements at the BLI propulsor inlet indicate that the fuselage boundary layer induces the strongest total pressure distortion. However, particularly at a non-zero sideslip angle, the vertical tail plane strongly affects the inflow to the BLI propulsor, introducing non-symmetric total pressure and velocity distortions. The analysis of the momentum and power fluxes in the flowfield show that around 20% of the total aircraft drag is produced in the fuselage boundary layer, while around 5% of the total aircraft drag power is dissipated in the fuselage wake. Furthermore, the BLI propulsor substantially reduces the axial kinetic energy flux in the fuselage boundary layer (the so-called "wake-filling" effect), suggesting an increased propulsive efficiency.

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Section: Flow Momentum and Power Analysissupporting

confidence: 87%

Section: Flowfield Downstream Of the Bli Propulsormentioning

confidence: 81%

mentioning

confidence: 99%

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Aerodynamic Performance of an Aircraft with Aft-Fuselage Boundary-Layer-Ingestion Propulsion

Corte

Sluis

Rao

et al. 2022

Journal of Aircraft

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“…Della Corte et al [136] conducted low-speed wind tunnel experiments on a simplified axisymmetric PFC model to investigate the complex interaction between airframe and propulsor. The key aerodynamic phenomena were explored using particle image velocimetry techniques (PIV).…”

Section: Centreline Conceptmentioning

confidence: 99%

“…The authors presented the fan map for both designs and highlighted the improved stability margin for the second design. Along with the experimental results from the work of Della Corte et al [136], a experimental work including a 3D PFC model was presented. The authors investigated the total pressure field at the fan face for different aircraft incidence angle.…”

Section: Centreline Conceptmentioning

confidence: 99%

Recent Advances in Boundary Layer Ingestion Technology of Evolving Powertrain Systems

2022

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The increasing environmental concern during the last years is driving the research community towards reducing aviation’s environmental impact. Several strict goals set by various aviation organizations shifted the research focus towards more efficient and environmentally friendly aircraft concepts. Boundary Layer Ingestion (BLI) is currently investigated as a potential technology to achieve different design goals such as energy efficiency improvement and noise emission reductions in the next generation of commercial aircraft. The technology principle is to place the propulsive unit within the boundary layer generated by the airframe body. Although several studies showed its theoretical benefits, a multidisciplinary nature is introduced in the design phase. This imposes new challenges on the current design tools. An increasing number of publications are focusing on assessing this technology while taking into account interlinks between different disciplines. The goal of this work is to review the current state-of-the-art of BLI evaluation studies. Particular focus is given to the underlying assumptions of each work, the methodology employed, and the level of fidelity of the tools used. By organizing the available work in a comprehensive manner, the up-to-date results are interpreted. The current trends and trade-offs emerging from studies are presented. Through reviewing the ongoing published work, the next steps for further development of the methods that will assess this technology are derived.

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Advancements and prospects of boundary layer ingestion propulsion concepts

Moirou

Sanders

Laskaridis

2023

Progress in Aerospace Sciences

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Power Balance Analysis Experiments on an Axisymmetric Fuselage with an Integrated Boundary-Layer-Ingesting Fan

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Cited by 8 publications

References 31 publications

Aerodynamic Performance of an Aircraft with Aft-Fuselage Boundary-Layer-Ingestion Propulsion

Aerodynamic Performance of an Aircraft with Aft-Fuselage Boundary-Layer-Ingestion Propulsion

Recent Advances in Boundary Layer Ingestion Technology of Evolving Powertrain Systems

Advancements and prospects of boundary layer ingestion propulsion concepts

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