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review and manipulation. Within the main PropCad inter- face, the user can adjust the blades parameters and export a correct and truly smooth 3D model. In this case, it is very easy to smooth the distribution of pitch from the 70% radius to the tip. The user can enter the desired value into the Blade

Distribution table at the bottom to correct the orientation of the section. The result is a propeller that is true to the origi- nal, but with signi? cantly smoother, damage-free surfaces.

HydroComp released this powerful new utility as part of the PropCad Premium feature set. The Import CAD File utility provides a valuable way to reverse the propeller de- sign process, allowing for the rapid extraction of propeller design data from 3D geometries. www.hydrocompinc.com

Senior Project Engineer, Adam Kaplan, is the lead developer of Pro- pExpert and PropCad, HydroComp’s propeller sizing and propeller design for tools. He has been with HydroComp for over a decade and is a frequent speaker at conferences. He holds a Master’s of Science in Mechanical Engineering from the University of New Hampshire and is the regional membership chair of the Society of Naval Archi- tects and Marine Engineers (SNAME) for New England.

www.marinelink.com

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