Airframe/engine integration with variable cycle engines

Wilson, Joseph J.; Wright, Bruce R.

doi:10.2514/6.1977-798

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2024

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“…With the continuous development of aircraft, the integration of flight and engine has become a major challenge that cannot be ignored, and a large number of related studies have been conducted [1][2][3][4][5]. As a key component of the engine, the integrated design of the nozzle and the aircraft afterbody has become the core focus of the research on the integration of flight and engine.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of Ejector Nozzle Profile with Internal and External Integrated Flow

He,

Shi,

2024

Aerospace

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Based on the orthogonal experimental method, a simulation case of the flow field of the ejector nozzle was designed to investigate the influence of the structural parameters of the ejector nozzle on the internal and external flow. This study explored the effects of throat area, outlet area, throat position, and ejector nozzle length on the ejector flow rate ratio, thrust coefficient, and net thrust coefficient. Subsequently, flow path geometry optimization was conducted to maximize the thrust coefficient or net thrust coefficient. The results revealed that the throat area ratio and the outlet area of the ejector nozzle are the primary factors affecting the aerodynamic performance. Compared to the baseline ejector nozzle model, the optimal model for thrust coefficient exhibited a 16.333% improvement, while the optimal model for net thrust coefficient demonstrated a significant enhancement of 46.674%.

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