...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aerospace science and technology >Numerical investigation of the aerodynamic interaction between a tiltrotor and a tandem rotor during shipboard operations
【24h】

Numerical investigation of the aerodynamic interaction between a tiltrotor and a tandem rotor during shipboard operations

机译：舰载作业中倾转旋翼和串联旋翼之间空气动力相互作用的数值研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Complex rotorcraft-to-rotorcraft interference problems occur during shipboard operations, and have a negative impact on safety. A vortex-based approach is used here to investigate the flow field and unsteady airloads of a tiltrotor affected by the wake of an upwind tandem rotor. In this work, the blade aerodynamics is modelled using a panel method, and the unsteady behaviour of rotor wakes is modelled using a vortex particle method. The effects of the ship and sea-surfaces are accounted for via a viscous boundary model. The method is applied to a 1/48th scaled model of a CH-46 operating on a model-scale Landing Helicopter Assault ship. The predicted vertical velocities at the location of the downstream V-22 are compared with Computational Fluid Dynamics and experiments carried out at NASA Ames Research Center. The results show that the predicted vertical velocities compare reasonably well with experiments and Computational Fluid Dynamics. A V-22 tilt-rotor placed in the wake of the CH-46 is also simulated, and rolling moments of the V-22 are calculated to show the effect of the upstream CH-46 wake. (C) 2019 Elsevier Masson SAS. All rights reserved.
机译：复杂的旋翼机与旋翼机之间的干扰问题在船上作业期间发生，并对安全性产生负面影响。这里使用基于涡流的方法来研究受逆风串联转子的尾流影响的倾斜转子的流场和非稳态空气负荷。在这项工作中，使用面板法对叶片空气动力学进行建模，并使用涡旋粒子法对转子尾流的非稳态行为进行建模。船和海面的影响通过粘性边界模型来解释。该方法适用于在模型规模的着陆直升机突击舰上运行的CH-46的1/48比例模型。将下游V-22处的预计垂直速度与计算流体动力学进行了比较，并在NASA Ames研究中心进行了实验。结果表明，预测的垂直速度与实验和计算流体动力学相当好。还模拟了放置在CH-46尾流中的V-22倾斜转子，并计算了V-22的侧倾力矩以显示上游CH-46尾流的影响。 （C）2019 Elsevier Masson SAS。版权所有。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号