Ocean engineers are often tasked with developing innovative, low-cost floating offshore wind turbines as the industry moves toward deeper waters to access regions with higher offshore wind potential. One example is the hanging-mass concept, in which a suspended counterweight stabilizes a positively buoyant floater; a hybrid design that combines a spar's performance with the maneuverability of a semi-submersible. Simultaneously, using elastic cables instead of a rigid support structure to support a low center of mass presents the opportunity for cost savings. This work presents experimental results from tests conducted on a 1/48-scale model of a conceptual hanging-mass floating offshore wind turbine design. Compared with traditional platform designs, the hanging-mass's response amplitude operators (RAOs) show a generally better response in heave and pitch, as the natural periods occur well outside the wave energy range, unlike the other platforms examined. Comparison between the line tension RAOs for systems with different suspension line stiffness indicate that softer systems experience larger tension fluctuations at low periods while the inverse is true for stiff systems. Finally, response spectra show that high-frequency modes describing relative motion between the two bodies are excited by irregular waves, likely due to sum-frequency second-order effects.

随着行业朝着更深的水域进入具有更高海上风电潜力的地区发展，海洋工程师经常被要求开发创新的低成本浮动式海上风电涡轮机。一个例子是悬挂质量概念，其中悬挂的配重稳定了一个正浮力的漂浮物。一种混合设计，将翼梁的性能与半潜式潜水艇的可操纵性结合在一起。同时，使用弹性电缆代替刚性支撑结构来支撑低质心为节省成本提供了机会。这项工作介绍了对概念悬挂质量浮式海上风力涡轮机设计的1/48比例模型进行的测试的实验结果。与传统平台设计相比，悬挂质量 响应振幅算子（RAO）在升沉和俯仰方面通常表现出更好的响应，因为自然周期恰好发生在波能范围之外，这与其他平台不同。对于具有不同悬架线刚度的系统，线张力RAO之间的比较表明，较软的系统在短时间内会遇到较大的张力波动，而对于刚性系统则相反。最后，响应光谱表明，描述两个物体之间相对运动的高频模式是由不规则波激发的，这很可能是由于和频二阶效应引起的。对于具有不同悬架线刚度的系统，线张力RAO之间的比较表明，较软的系统在短时间内会遇到较大的张力波动，而对于刚性系统则相反。最后，响应光谱表明，描述两个物体之间相对运动的高频模式是由不规则波激发的，这很可能是由于和频二阶效应引起的。对于具有不同悬架线刚度的系统，线张力RAO之间的比较表明，较软的系统在短时间内会遇到较大的张力波动，而对于刚性系统则相反。最后，响应光谱表明，描述两个物体之间相对运动的高频模式是由不规则波激发的，这很可能是由于和频二阶效应引起的。