Design of a Cruise-Efficient Compound Helicopter

Alex M. Moodie; Hyeonsoo Yeo

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Design of a Cruise-Efficient Compound Helicopter

机译：巡航效率的复合直升机的设计

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A slowed-rotor compound helicopter is conceptually designed using a multifidelity approach, showing the potential for significant efficiency improvements above conventional helicopters. The cruise tip speed and bilinear twist distribution are optimized using the Comprehensive Analytical Model of Rotorcraft Aerodynamics and Dynamics (CAMRAD II). System-level metrics are computed using the NASA Design and Analysis of RotorCraft (NDARC) program to show top-level payoffs. An aeroperformance map is generated using comprehensive analysis for the optimum twist distribution, providing calibration data for the main rotor model within NDARC. Effects of disk loading and wing loading on the size of the slowed-rotor compound helicopter are analyzed, and off-design performance is computed. Rotor-wing interference effects are analyzed using CAMRAD II for several wing vertical locations.

机译：慢旋翼复合直升机在概念上采用了多保真方法进行设计，显示出比传统直升机显着提高效率的潜力。使用旋翼航空动力学和动力学综合分析模型（CAMRAD II）优化了巡航尖端速度和双线性扭曲分布。使用NASA的RotorCraft设计和分析（NDARC）程序计算系统级别的指标，以显示顶级收益。通过综合分析生成最佳性能的航空性能图，以获得最佳的扭曲分布，从而为NDARC中的主旋翼模型提供校准数据。分析了圆盘载荷和机翼载荷对慢旋翼复合直升机尺寸的影响，并计算了超设计性能。使用CAMRAD II分析了几个机翼垂直位置的旋翼干扰效应。

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《Journal of the American Helicopter Society》 |2012年第3期|p.032004.1-032004.11|共11页
作者
Alex M. Moodie; Hyeonsoo Yeo;
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Aeroflightdynamics Directorate (AMRDEC) U.S. Army Research, Development, and Engineering Command NASA Ames Research Center Moffett Field, CA;

Aeroflightdynamics Directorate (AMRDEC) U.S. Army Research, Development, and Engineering Command NASA Ames Research Center Moffett Field, CA;

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Design of a Cruise-Efficient Compound Helicopter

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