Journal of Shanghai Jiaotong University ›› 2017, Vol. 51 ›› Issue (7): 812-818.doi: 10.16183/j.cnki.jsjtu.2017.07.007

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 Experimental Study of LType Podded Propulsors in
 Straight Forward Motion and Azimuthing Conditions

 ZHAO Dagang1,GUO Chunyu1,SU Yumin1
DOU Pengfei2,JING Tao1,ZHANG Haipeng1   

  1.  1. College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China;
    2. CDadapco China Co., Ltd., Shanghai 200120, China
  • Online:2017-07-31 Published:2017-07-31
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Abstract:  In this study, an openwater measuring instrument was developed for Ltype podded propulsors and a series of experimental tests were conducted to evaluate hydrodynamic performances of the podded propulsor. Performance of propeller thrust, torque and overall thrust of the podded propulsor unit was measured in the experiment under the conditions of straight forward motion with the advance coefficient between 0 and 1.3. And a comparison of propeller and the podded unit performance under dynamic azimuthing conditions with an azimuthing of 0.1396 rad/s and static azimuthing conditions was made at three different advance coefficients of Ltype podded propulsors. The experimental results demonstrated that comparing with the static azimuthing conditions, propeller thrust in dynamic azimuthing conditions was larger but torque was smaller when the Ltype podded propulsor with righthanded rotation propeller turns right. The regularity of the variable force on the pod is very complex.

Key words:  Ltype podded propulsor, model test, dynamic azimuthing, hydrodynamic, propeller

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