Nacelle-airframe integration design method for blended-wing-body transport with podded engines

Xin, Zhenqing; Chen, Zhenli; Gu, Wenting; Wang, Gang; Tan, Zhiying; Liu, Dong; Zhang, Binqian

doi:10.1016/j.cja.2019.06.009

Cited by 7 publications

(1 citation statement)

References 17 publications

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“…Hooker et al showed that while over the wing integration can yield benefits in aerodynamic efficiency when an ultra high bypass ratio (UHBR) engine is mounted at or beyond the wing trailing edge it substantially increases overall drag when it is integrated ahead of the trailing edge [1]. Flamm et al [2] and Xin et al [3] respectively found flow separation and strong shock waves associated to engines mounted above the body of HWB designs.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic Investigation of Propulsion Integration for a Low Noise Hybrid Wing-Body with Podded UHBR Turbofan Engines

Keller

2024

J. Phys.: Conf. Ser.

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The presented work examines the aerodynamic challenges of podded ultra high-bypass engines installed on a short/mid range low noise hybrid wing body configuration. After assessing the initial engine integration design, sensitivity studies regarding the impact of the freestream Mach number, engine position, and the engine incidence angle on the interference drag are discussed. Then, shape modifications of the nacelle and the center-body based on 2D RANS optimizations are presented. The results indicate that in order to reduce the initially massive interference drag, the overall aircraft design either has to allow for a modified engine position or for reshaping of the center-body’s upper surface. With the latter, an overall drag reduction of –44 % was achieved.

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Section: Introductionmentioning

confidence: 99%