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首页> 外文会议>AHS Specialists Conference on Aeromechanics Design for Transformative Vertical Flight >Coupled CFD/CSD Predictions of Semi-Span XV-15
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Coupled CFD/CSD Predictions of Semi-Span XV-15

机译：耦合CFD / CSD预测半跨度XV-15

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This work focuses on a number of aspects which are progress toward the goal of tightly coupled CFD/CSD analysis for whirl-flutter prediction. First, the Rotorcraft Comprehensive Analysis System (RCAS) analysis is used to carry out traditional linear stability analysis. Next, a method of using trim springs to artificially increase the stability of the model during the RCAS trim procedure is presented. Finally, this method is used to complete time integrated transient analysis to identify the dominant modes and associated damping at a sweep of wind speeds. Differences between linear stability analysis and time domain analysis are presented. Finally, new capabilities introduced to the CREATE-AV software Helios are used to present a first fully-elastic semi-span model of the XV-15 using the high-fidelity aerodynamics in Helios coupled to RCAS. Baseline loose coupled results are given. A focus is placed on developing modeling procedures which will allow for CFD/CSD tight-coupling for whirl-flutter predictions rather than correlating against previous results.
机译：这项工作侧重于许多方面，这是朝向旋转预测的紧密耦合CFD / CSD分析的目标的进展。首先，旋翼飞机综合分析系统（RCAS）分析用于进行传统的线性稳定性分析。接下来，提出了一种使用修剪弹簧以人为地提高模型的稳定性的方法。最后，该方法用于完成时间集成瞬态分析，以识别主导模式并在扫描风速下扫描。提出了线性稳定性分析与时域分析之间的差异。最后，用于Create-AV软件Helios引入的新功能用于使用Helios的高保真空气动力学呈现XV-15的第一全弹性半跨度模型。基线松散耦合结果。对开发建模程序进行焦点，这将允许CFD / CSD用于旋转颤动预测的紧密耦合而不是与先前结果相关联。

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