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A propeller thrust and torque dynamometer for wind tunnel models

机译：用于风洞模型的螺旋桨推力和扭矩测功机

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The design, construction and calibration of a propeller thrust and torque dynamometer is described. The dynamometer was constructed primarily for the testing of model ship propellers when working upstream of a rudder. An outline of the special ised design requirements is given. The basic design concepts are described together with the reasons for the choice of flexures and their dimensions, strain gauges, circuits, bridge voltages and instrumentation. A brief description of the calibration process is given and the calibration results are described and discussed. It was found that there were no interactions between the components, a satisfactory overall measuring accuracy was achieved and the dynamometer had performed well in service. It is concluded that the overall design approach, concept and design details were satisfactory and suitable for this particular application.
机译：描述了螺旋桨推力和扭矩测功机的设计，构造和校准。测功机主要用于在舵的上游工作时测试模型螺旋桨。给出了特殊设计要求的概述。描述了基本设计概念以及选择挠曲及其尺寸，应变计，电路，电桥电压和仪器的原因。给出了校准过程的简要说明，并描述和讨论了校准结果。发现组件之间没有相互作用，获得了令人满意的总体测量精度，并且测功机在使用中表现良好。结论是总体设计方法，概念和设计细节令人满意并且适合于该特定应用。

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