Propeller Calc
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Propeller Calc
Propeller Calc

Propeller Calc

Developer: Frode Rørvik
App Size: 29 MB
Release Date: Nov 11, 2011
Price: FREE
3
1 Ratings
Size
29 MB

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iPhone
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Propeller slip calculator for powerboats

Plearse use this calculator to figure out all parameters in regard to pitch, gear ratio, RPM, speed and slip. Enter any four variables, and it will calculate the fifth.

Pitch is the theoretical forward movement for one complete turn of the propeller. Every centimeter of the boat that is in contact with the water induces drag. Therefore the distance traveled is not the same, since the propeller is "slipping" behind the theoretical distance it should travel with each rotation. The difference between theory and reality is called slip.

Depending on your application, slip will typically range between 5% and 30%. A lower number is not always what you are after. Slip of a prop changes with operating conditions, and is not a direct measure of efficiency. Please consult professionals for guidance.

Best regards from the Norwegian offshore powerboat Team Rørvik. Happy powerboating!
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Propeller Calc 2.1 Update
Sep 25, 2017 Version History
This app has been updated by Apple to display the Apple Watch app icon.In this updated version for iOS10 you can play with the slider controls for slip and RPM. This version also supports iPad.

~Frode Rørvik
More Information about: Propeller Calc
Price: FREE
Version: 2.1
Compatibility: Requires Requires iOS 10 or later
Size: 29 MB
Genre: Utilities
Release Date: Nov 11, 2011
Last Update: Sep 25, 2017
Content Rating: 4+
Developer: Frode Rørvik
Language: English -

All Apps & Games Created by: Frode Rørvik

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