The ice accretion on the rotating spinner was tested in the icing wind tunnel. The main portion of the icing equipment was installed in the test section of the icing wind tunnel

driven by the external portion with strap. The ice accrection characteristics on the rotating spinner were obtained through icing test under typical icing conditions. The test results showed that at the beginning

the ice accrection was relatively slow

resulting in evenly distributed glaze ice on the spinner surface. And then

the glaze ice was discontinuously covered with white rime ice like ‘feather’ and grew rapidly. Finally

a majority of the ‘feather’ shaped rime ice shed from the icing surface of the rotating spinner.