Propeller Calc 4+
Frode Rørvik
Designed for iPad
-
- Free
Screenshots
Description
Designed for propeller calculation for marine vessels.
This calculator can determine pitch, gear ratio, RPM, propeller slip and speed parameters. Enter any four variables, and it will calculate the fifth. Use the toggle switch to choose which field to calculate.
Pitch is the theoretical forward movement for one complete turn of the propeller. Every inch of the boat in contact with the water induces drag. Therefore, the distance travelled differs 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 typically ranges between 5% and 20%. A lower number is only sometimes 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.
Happy powerboating
What’s New
Version 3.1
The UI is tweaked to enhance usability. Speed can now be changed using a stepper or a slider control.
App Privacy
The developer, Frode Rørvik, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary based on, for example, the features you use or your age. Learn More
Information
- Provider
- Frode Rorvik
- Size
- 594.9 KB
- Category
- Utilities
- Compatibility
-
- iPhone
- Requires iOS 17.0 or later.
- iPad
- Requires iPadOS 17.0 or later.
- Mac
- Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Languages
-
English
- Age Rating
- 4+
- Copyright
- © Frode Rørvik
- Price
- Free