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首页> 外文期刊>Transactions of the Japan society for aeronautical and space sciences >Evaluation of Longitudinal Stability Characteristics Based on Irodov's Criteria for Wing-In-Ground Effect
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Evaluation of Longitudinal Stability Characteristics Based on Irodov's Criteria for Wing-In-Ground Effect

机译：基于翼展效应的Irodov准则评估纵向稳定性特征

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摘要

The present study evaluates the longitudinal stability characteristics under the influence of the wing-in-ground (WIG) effect by applying Irodov's criteria. First, the applicability of Irodov's criteria in estimating longitudinal stability for WIG vehicles was confirmed by derivation of the criteria and order estimation prior to usage of criteria. Second, aerodynamic analysis was conducted using the Navier-Stokes solver for the Clark-Y wing and wing-endplate combinations at various heights. Finally, longitudinal stability was evaluated using Irodov's criteria. On analysis, four assumptions were set for the evaluation of longitudinal stability under the influence of the ground effect. The most important assumption is that the stability contribution of the horizontal tail is negligible when the ground effect is strong. Under these assumptions, the computational results satisfactorily demonstrate the stable behavior of the vehicle under the influence of the ground effect when the Clark-Y wing and wing-endplate combinations are used.
机译：本研究通过应用Irodov准则评估了在地面机翼（WIG）效应影响下的纵向稳定性特征。首先，通过推导标准和在使用标准之前进行订单估算，确认了Irodov标准在估计WIG车辆纵向稳定性方面的适用性。其次，对于不同高度的Clark-Y机翼和机翼-端板组合，使用Navier-Stokes求解器进行了空气动力学分析。最后，使用Irodov准则评估纵向稳定性。在分析中，设置了四个假设以评估在地面效应影响下的纵向稳定性。最重要的假设是，当地面效应较强时，水平尾翼的稳定性贡献可忽略不计。在这些假设下，当使用Clark-Y机翼和机翼-端板组合时，计算结果令人满意地证明了车辆在地面效应的影响下的稳定性能。

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