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首页> 外文期刊>Journal of the American Helicopter Society >Coupled and Trimmed Aerodynamic and Aeroacoustic Simulations for Airbus Helicopters' Compound Helicopter RACER
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Coupled and Trimmed Aerodynamic and Aeroacoustic Simulations for Airbus Helicopters' Compound Helicopter RACER

机译：空中客车直升机的复合直升机RACER的耦合和修剪空气动力学和空气声学模拟

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摘要

In recent years, various helicopter manufacturers increasingly have been focusing on the development of new high-speed rotorcraft configurations, one of them being the compound helicopter RACER (rapid and cost-efficient rotorcraft) of Airbus Helicopters (AH). However, these new configurations encounter new aeromechanic challenges, in terms of aerodynamic interactions, flight mechanics stability, rotor dynamics, or aeroacoustic noise emission, to name only a few. To support AH at the minimization of risk of RACER's first flight, the Institute of Aerodynamics and Gas Dynamics provides high-fidelity coupled and trimmed aerodynamic and aeroacoustic simulations of the complete helicopter by the application of a multidisciplinary tool chain. In its first part, the work focuses on the description of this advanced tool chain and on important features for the analysis of this new configuration. In the second part, exemplary simulation results for a hover and a high-speed cruise flight condition are shown, and the main aerodynamic interactions between the different components are identified. As expected for this configuration, numerous interactions are found for both flight cases, e.g., main rotor-propeller interaction in hover or main rotor-wing interaction in high-speed flight. Finally, aeroacoustic results are shown for hover with a close look at the propellers' contribution.
机译：近年来，各种直升机制造商越来越关注新的高速旋翼飞机配置的开发，其中之一就是空中客车直升机（AH）的复合直升机RACER（快速且经济高效的旋翼飞机）。但是，这些新配置在空气动力学相互作用，飞行力学稳定性，旋翼动力学或空气声噪声排放等方面遇到了新的航空机械挑战。为了在最大程度上降低RACER首次飞行风险的情况下为AH提供支持，通过使用多学科工具链，空气动力学和气体动力学研究所提供了完整直升机的高保真耦合和微调的空气动力学和空气声学模拟。在第一部分中，工作重点是对该高级工具链的描述以及对这种新配置进行分析的重要功能。在第二部分中，显示了悬停和高速巡航飞行条件的示例性仿真结果，并确定了不同组件之间的主要空气动力学相互作用。如对此配置所期望的那样，对于两种飞行情况都发现了许多相互作用，例如，悬停时的主旋翼-螺旋桨相互作用或高速飞行中的主旋翼-机翼相互作用。最后，通过仔细观察螺旋桨的作用，显示了悬停的航空声学结果。

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