Steady-State Performance Comparison of Two Different Adaptive Cycle Engine Configurations

Meng, Xiangying; Zhu, Zhili; Chen, Min

doi:10.2514/6.2017-4791

Cited by 12 publications

(10 citation statements)

References 2 publications

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“…During the development of the ACE concept, many different ACE configurations have been proposed [2], and several of them had been studied to varying degrees [12][13][14][15]. Among them, ACE with fan-on-blade (FLADE) and core drive fan stage (CDFS)are representative and put forward earlier [2,12].…”

Section: Introductionmentioning

confidence: 99%

“…Although the working principles of the different ACE concepts are generally similar, there are still many differences in their specific operation and component matching [12][13][14][15][16][17][18][19][20][21][22]. At present, not all ACE concepts have been studied in depth, and some important research results of ACE have not been published.…”

Section: Introductionmentioning

confidence: 99%

“…The algorithms used in this method have been demonstrated to have good convergence [12,26,38,39]. Without a specific prototype, this method can still calculate and analyze the steady-state performance by using the general characteristics of the components [12][13][14][15][39][40][41][42][43]. Therefore, the zerodimensional model numeric simulation method is considered to have strong practicability and flexibility in the preliminary R&D stage of gas turbine engine [23,26,27,[39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, an ACE with convertible fan system (CFS) [15,44] was studied with the zero-dimensional model numeric simulation method. A significant feature of this ACE configuration is that most of the compressing components which play an important role in the adjustment of flow rate and pressure ratio are centrally designed on the lowpressure shaft, while only a conventional core engine is reserved on the high-pressure shaft.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A Matching Problem between the Front Fan and Aft Fan Stages in Adaptive Cycle Engines with Convertible Fan Systems

Meng¹,

Zhu²,

Chen³

et al. 2021

Energies

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In the process of studying the steady-state performance and component matching of adaptive cycle engines with convertible fan system, it was found that the front fan and aft fan stage have a unique matching problem when the mode select valve is closed and engine is operating at higher Mach number conditions. The cause of this matching problem was studied with numeric simulation in this paper. Based on the features of adaptive cycle engines with convertible fan system, the possible methods and their feasibilities of solving this matching problem were also discussed. According to the results, the flow rate adjustment capacity of the aft fan stage directly determines the occurrence and severity of this matching problem. The matching problem can be ameliorated in some extent by either reducing the design second bypass ratio or adjusting the variable geometry mechanisms, but it cannot be completely solved at the aspect of component matching mechanism.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Matching Problem between the Front Fan and Aft Fan Stages in Adaptive Cycle Engines with Convertible Fan Systems

Meng¹,

Zhu²,

Chen³

et al. 2021

Energies

Self Cite

View full text Add to dashboard Cite

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“…It is an important part of the US Department of Defense's Adaptive Versatile Engine Technology (ADVENT) and the Adaptive Engine Technology Development (AETD) programs [18][19][20]. The typical type of ACE consists of a third bypass duct and more variable geometries than the VCE [2,3,21,22]. Due to the additional bypass duct and variable geometries, the ACE can modulate the airflow and pressure ratio in a wider range than the VCE.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of a Three-Stream Adaptive Cycle Engine during Throttling

Chen

Zhang

Tang

2018

International Journal of Aerospace Engineering

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One advantage of the adaptive cycle engine (ACE) is its ability of throttling with constant airflow by the combined control of variable geometries, resulting in an improvement of spillage drag. However, the improvement is achieved at risk of a complex technical solution and control. This article investigates the selection scheme of variable geometries and engine configuration. It focuses on the performance of a three-stream ACE during throttling, whose configuration and control schedule are simpler than other types of ACEs. Five variable geometries are selected from seven available options through comparison analysis. The uninstalled thrust decreases from 100% to 60.36% during the subsonic throttling and to 59.81% during the supersonic throttling. Benefitting from the decreased spillage drag, the installed performance of the three-stream ACE is improved to some degree during throttling. This improvement is less than the result of a three-bypass ACE, whose configuration and control schedule are more complex. Thus, the three-stream ACE is a compromise design considering the technical risk and variable cycle characteristic, which is a better platform to verify the component technology and control schedule for the further research on a more complex type of ACE.

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Investigations of entrainment characteristics and shear-layer vortices evolution in an axisymmetric rear variable area bypass injector

Huang

Xia

et al. 2022

Chinese Journal of Aeronautics

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Steady-State Performance Comparison of Two Different Adaptive Cycle Engine Configurations

Cited by 12 publications

References 2 publications

A Matching Problem between the Front Fan and Aft Fan Stages in Adaptive Cycle Engines with Convertible Fan Systems

A Matching Problem between the Front Fan and Aft Fan Stages in Adaptive Cycle Engines with Convertible Fan Systems

Performance Analysis of a Three-Stream Adaptive Cycle Engine during Throttling

Investigations of entrainment characteristics and shear-layer vortices evolution in an axisymmetric rear variable area bypass injector

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