How to Create a Pro­peller Blade Tip

In our pro­peller design projects for maritime appli­ca­tions (i.e. ship and boat design), we use a special feature for creating the blade’s tip surface. This is a tricky region because there is a sin­gu­lar­ity, and as a designer you need an absolutely clean and smooth solution for gen­er­at­ing this tip surface. From a tech­ni­cal point of view, it is also impor­tant in CAESES® to define this surface in a way that it closes the blade without any warnings or surface problems. All sub­se­quent oper­a­tions such as the hub fillet gen­er­a­tion are based on the closed blade which should not show any warnings or even tiny gaps.

In the upcoming version 4.1.2, we have now added this blade tip feature. Users of CAESES® can simply access it through the blade menu. The fol­low­ing short video shows how to use it: 

Inter­ested users can take a look into the feature def­i­n­i­tion of this tip surface. The entire def­i­n­i­tion can be accessed and modified if required e.g. for very special shapes or other appli­ca­tions. Since the surface def­i­n­i­tion follows a gen­er­al­ized approach, the code can also be used for other geome­tries such as rudders or wings to nicely close them. Here is a screen­shot of the definition:

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