Uploaded September 2017 | Updated September 2026, 2 weeks ago
How do we find the centroid of a circular segment? In this video, I'll walk you through the solution steps.
===== NOTE =====
- I'm only solving for the X centroid in this video, not the Y centroid.
- I made this video because I need the centroid in my aligning torque video (see link below).
===== RELATED VIDEOS =====
: : Centroid of a Triangle
goo.gl/qqWBvY
: : Explained: Aligning Torque Simulation
goo.gl/NwVJjb
: : Explained: Aligning Torque
goo.gl/pMfq1s
How do we find the centroid of a circular segment? In this video, I'll walk you through the solution steps.
===== NOTE =====
- I'm only solving for the X centroid in this video, not the Y centroid.
- I made this video because I need the centroid in my aligning torque video (see link below).
===== RELATED VIDEOS =====
: : Centroid of a Triangle
goo.gl/qqWBvY
: : Explained: Aligning Torque Simulation
goo.gl/NwVJjb
: : Explained: Aligning Torque
goo.gl/pMfq1s
![Source Panel Method: Normal Velocity Geometric Integral [I(ij)]](https://i.ytimg.com/vi/76vPudNET6U/mqdefault.jpg "Source Panel Method: Normal Velocity Geometric Integral [I(ij)]
In the previous video (Flow Around an Airfoil), we ended with an expression that still needed some simplification before we could use it to solve for the source panel strengths. In this video, we go through the solution process of that term, called the geometric integral (or at least thats what Im calling it).
Dont worry, were almost ready to code our panel method. The next video is about creating the system of equations and solving it.
RELEVANT VIDEOS
► Panel Methods Playlist
https://www.youtube.com/watch?v=bWjo3N9COz4&list=PLxT-itJ3HGuUDVMuWKBxyoY8Dm9O9qstP
► Panel Method Geometry
https://www.youtube.com/watch?v=kIqxbd937PI
► Building More Complex Flows
https://www.youtube.com/watch?v=EKzbwJvKcmw
► Flow Around an Airfoil
https://www.youtube.com/watch?v=cLdv1UfX1g8
NOTES
- Ill add notes here if I need to.
ERRORS
- If you see an error in the video, please let me know and I will include it here.
REFERENCES
Note: the links are Amazon affiliate links. If you do happen to want to buy the book and use the link below, it helps me out a little.
► Fundamentals of Aerodynamics, Anderson
https://amzn.to/3emVuXU
► Foundations of Aerodynamics, Kuethe and Chow
https://amzn.to/2yMg1Vi
► Theory of Wing Sections, Abbott and Doenhoff
https://amzn.to/2wvZyUt")
![Explained: Load Excel Data into Tecplot [Tecplot]](https://i.ytimg.com/vi/7NB5AS5ZOVk/mqdefault.jpg "Explained: Load Excel Data into Tecplot [Tecplot]
This video shows how to take data from Excel and load it into Tecplot. One reason to do this is to generate more professional looking plots. Remember that equations wont load into Tecplot, and that it must be saved as a 97-2003 file.")
![Explained: Listbox GUI [MATLAB]](https://i.ytimg.com/vi/81mdfpubnNA/mqdefault.jpg "Explained: Listbox GUI [MATLAB]
This video shows how to get data from a listbox in a MATLAB GUI.")
![Explained: GUI Exit Button [MATLAB]](https://i.ytimg.com/vi/9Tli0Fiw7r4/mqdefault.jpg "Explained: GUI Exit Button [MATLAB]
Create an exit push button for your MATLAB GUI using this code. When the exit button is pressed, the command window will be cleared, the variables that you specify will be removed from the workspace, and the figure (GUI window) will be deleted.
Explained: Make a GUI [MATLAB]
https://www.youtube.com/watch?v=42xLYuMIexg
Do download the .m and .fig files from this video, visit this page on my website.
http://www.joshtheengineer.com/2015/01/05/explained-matlab-gui-exit-button/")
![Explained: Bring Data To Front In Chart [Excel]](https://i.ytimg.com/vi/9eVMuPIJh0k/mqdefault.jpg "Explained: Bring Data To Front In Chart [Excel]
This video explains how to bring line data in front of scatter data in an Excel plot. Plots with only scatter data can be brought to the front by moving them up or down in the Select Data Source window. However, its not as easy for mixed data.
Update 11/12/15 - Thanks to comments from Eric Almquist and Robert Patrick
1) I was not careful enough with resetting my secondary axis, and the vertical scale for the primary and secondary axes are actually different (exactly what I was warning you about, ironically).
2) An easier way to hide the secondary axis is to either simply click on the axis and delete it (Robert Patrick), or to click on the + sign (Chart Elements) at the top right of the plot, click on the right-arrow next to axes, and uncheck Secondary Vertical (Eric Almquist).")
![Explained: Blinking Static Text in GUI [MATLAB]](https://i.ytimg.com/vi/9f6GAIzZcZg/mqdefault.jpg "Explained: Blinking Static Text in GUI [MATLAB]
A static text field can be used to provide information on how your code is running. In this video, I describe how to blink a message in a static text field in a MATLAB GUI.
How To Make a MATLAB GUI:
https://www.youtube.com/watch?v=42xLYuMIexg")
