PSModel a look inside

HOME

Introduction

Quick Start

Quick Series
Facts

PSModel
Program

Data Input

Data Output

Importing a
Data file into
MS Excel

Main Menu

Main Screen

Printing
Graphs
and Data

Screen Colors
and Fonts

Screen
Graphs

Shortcuts

Working
with Data

Testing:

Test Sheet

Examples

19' Ski Boat

34' Sailboat

41' Utility Boat

Technical

Blade Area
Ratio

Calculating
the Cavitation
Number

Horsepower
Losses

Hull Speed

Kt Breakdown

Propeller
Geometry

Propeller Law

Wake Factors

Glossary

References

Screen Graphs:

There are two types of screen graphs: propeller curves and column graphs.  

Propeller curves are displayed by selecting or highlighting a data row, or by clicking the Calculate button on a Series Dialog Box.  Propeller curves consist of three plots:

 1) propeller Efficiency versus J (Advance Coefficient) plot

 2) Torque Coefficient (Kq) versus J plot

 3) Thrust Coefficient (Kt) versus J plot

The propeller Series, Sigma, P/D, BAR, Z and Cup values are shown above the propeller curves.

Main screen, J vs. Kt, Kq, Eff. curves

Column graphs are generated from data in columns.  Axis values are chosen by left clicking on two column headers in the Data Window.  The first column clicked will contain X values (horizontal axis), and the second will contain the Y values (vertical axis).  To change the Y values for a graph, simply left click a different column header.  To change the X values, first click anywhere in the Graph Window then left click a different column header.  The column graph below was created by clicking on the MPH column header first, then clicking on the Horsepower column header.

Main screen, MPH vs. HP curve

Another way to generate a column graph is by selecting Tools \ Graph Cols... from the main menu.  Simply follow the directions in the dialog box that is displayed.

Graph Columns Dlg Box