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首页> 外文期刊>International Journal of Aerodynamics >Fluidic thrust vectoring of an axisymmetrical nozzle: an analytical model
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Fluidic thrust vectoring of an axisymmetrical nozzle: an analytical model

机译：轴对称喷嘴的流体推力矢量：分析模型

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摘要

An engineering-type analysis is proposed and used to investigate the performances of thrust vectoring by fluidic injection in the divergent of a supersonic axisymmetrical convergent-divergent nozzle. This method includes several approaches which consist mainly of a fluidic obstacle height evaluation and the prediction of the separation line that results upstream of the fluidic obstacle. The construction of the separation line is also based on some separation correlations proposed in the literature. The nozzle thrust deviation is then calculated by taking into account the injectant fluid momentum rate contribution and the integration of the pressure acting on the nozzle inner wall. The sensitivity of the model versus some separation criteria is discussed. The results of the analytical model are compared with the experiments conducted recently by the authors. The comparison shows a very good agreement for some of the separation criteria over the whole range of injected to main flow-rate ratios.
机译：提出了一种工程类型的分析方法，并用于研究在超音速轴对称收敛-发散喷嘴的发散中通过流体注入进行推力矢量化的性能。该方法包括几种方法，这些方法主要包括流体障碍物高度评估和对在流体障碍物上游产生的分离线的预测。分离线的构造也基于文献中提出的一些分离相关性。然后通过考虑喷射流体动量速率贡献和作用在喷嘴内壁上的压力的积分来计算喷嘴推力偏差。讨论了模型相对于某些分离标准的敏感性。分析模型的结果与作者最近进行的实验进行了比较。比较表明，在整个进样流量与主流量比的整个范围内，对于某些分离标准而言，它们具有很好的一致性。

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