Advanced Rotorcraft Aeromechanics Simulations Using HPCMP CREATE™-AV Helios
Advanced Rotorcraft Aeromechanics Simulations Using HPCMP CREATE™-AV Helios
复制标题
使用 HPCMP CREATE™-AV Helios 进行高级旋翼机空气力学仿真
DOI：
--
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
H. Saberi
中科院分区：
文献类型：
--
作者：
B. Roget;J. Sitaraman;R. Blumenstein;M. Taheri;H. Saberi
HPCMP CREATE™-AV Helios是一个旋翼机空气动力学仿真框架，它将基于计算流体动力学（CFD）的更高保真空气动力学建模与旋翼机综合分析相结合。具有多个旋翼和不同旋翼频率的飞行器需要对用于旋翼机空气动力学预测的传统CFD/CSD耦合方法进行若干改进。此外，对于非旋翼气动实体（例如机身和机翼），也需要进行CFD/CSD耦合修改，其气动载荷受到多个旋翼尾流的干扰和冲击的影响。开发了用于一致地耦合具有非谐波任意频率的多转子的方法。所开发的技术还允许在每次CFD/CSD耦合迭代时转子频率的变化。成功地证明了该方法可以实现UH-60 A的全机配平，其所有主要湿表面（即主旋翼、尾桨、机身和安定面）上的气动载荷均采用基于CFD的建模方法进行预测。还研究了商用四轴飞行器配置，以证明使用转子频率作为控制变量来实现全飞行器配平的能力。
The HPCMP CREATE™-AV Helios is a rotorcraft aeromechanics simulation framework that combines higher fidelity Computational Fluid Dynamics (CFD) based aerodynamic modeling with rotorcraft comprehensive analysis. Vehicles with multiple rotors and differing rotor frequencies require several enhancements to the traditional CFD/CSD coupling approach used for rotorcraft aeromechanics predictions. Additionally, CFD/CSD coupling modifications are also required for non-rotor aerodynamic entities such as fuselages and wings whose aerodynamic loads are influenced by the interference and impingement of multiple rotor wakes. Methodologies for consistently coupling multiple rotors with non-harmonic arbitrary frequencies are developed. The developed technique also allows for variations in rotor frequencies at each CFD/CSD coupling iteration. The methodology is successfully demonstrated to achieve full vehicle trim for the UH-60A with aerodynamic loading on all main wetted surfaces, i.e. main-rotor, tail-rotor, fuselage and stabilator wing, predicted using CFD-based modeling. A commercial quadcopter configuration is also studied to demonstrate the ability to achieve full vehicle trim using the rotor frequencies as control variables.