The capabilities of two stators, one with controlled-diffusion (CD) blade sections and one with double-circular-arc (DCA) blade sections, were compared. A CD stator was designed and tested that had the same chord length but half the blades of the DCA stator. The same fan rotor (tip speed, 429 m/sec; pressure ratio, 1.65) was used with each stator row. The design and analysis system is briefly described. The overall stage and rotor performances with each stator are compared, as are selected blade element data. The minimum overall efficiency decrement across the stator was approximately 1 percentage point greater with the CD balde sections than with the DCA blade sections.
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机译：比较了两个定子的能力，其中一个具有可控扩散（CD）叶片部分，另一个具有双圆弧（DCA）叶片部分。设计并测试了CD定子，其弦长相同，但叶片的DCA定子的一半。每排定子使用相同的风扇转子（叶尖速度为429 m / sec；压力比为1.65）。简要描述了设计和分析系统。比较每个定子的总体级和转子性能，以及选择的叶片元件数据。相对于DCA叶片部分，CD秃头部分的整个定子最小总效率递减约高1个百分点。
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