Uploaded April 2016 | Updated September 2026, 1 week ago
This video shows a simple method for remembering what sine and cosine functions look like, and what their important angles are.
This video shows a simple method for remembering what sine and cosine functions look like, and what their important angles are.
![Explained: Slider GUI [MATLAB]](https://i.ytimg.com/vi/wGaPLzaHIps/mqdefault.jpg "Explained: Slider GUI [MATLAB]
This video explains how to code a slider in a MATLAB GUI. It also shows how to change the Min, Max, and Value arguments to alter the range of the slider.")
![Explained: Tilde to Discard Output [MATLAB]](https://i.ytimg.com/vi/wg7GTwsZL-Q/mqdefault.jpg "Explained: Tilde to Discard Output [MATLAB]
Sometimes functions return too much information, or more than you need/want. To suppress some of the output and keep your code clean, you can use a tilde in the place of variables.")
![Explained: NACA 4-Digit GUI Part 4/10 [MATLAB]](https://i.ytimg.com/vi/x8ls10Euy-k/mqdefault.jpg "Explained: NACA 4-Digit GUI Part 4/10 [MATLAB]
This is the fourth video in my 10-video series on coding a program in MATLAB to compute, display, and save a NACA 4-digit airfoil.
IN THIS VIDEO:
We code the airfoil type callback. This edit text box reads in the string of the airfoil that the user wants to compute and plot. After we read in the value of the airfoil, we check to make sure that it is only four digits. If more or less, it displays an error message and makes sure the airfoil cant be plotted.
IN THIS SERIES:
Part 1/10 : https://goo.gl/9UBgbo
Part 2/10 : https://goo.gl/jRRcYJ
Part 3/10 : https://goo.gl/rSVLHo
Part 4/10 : https://goo.gl/HwHB39
Part 5/10 : https://goo.gl/AlDne8
Part 6/10 : https://goo.gl/7n1QP7
Part 7/10 : https://goo.gl/nTGleR
Part 8/10 : https://goo.gl/ez247P
Part 9/10 : https://goo.gl/8mXYcc
Part 10/10: https://goo.gl/ovBlbW")
![Explained: Radio Button GUI [MATLAB]](https://i.ytimg.com/vi/xN2fMYZgEOw/mqdefault.jpg "Explained: Radio Button GUI [MATLAB]
A radio button can be used for selection and deselection of an option. This video shows how to get the value of a radio button in a MATLAB GUI.")
![Explained: NACA 4-Digit GUI Part 7/10 [MATLAB]](https://i.ytimg.com/vi/x_iOVeqJCLA/mqdefault.jpg "Explained: NACA 4-Digit GUI Part 7/10 [MATLAB]
This is the seventh video in my 10-video series on coding a program in MATLAB to compute, display, and save a NACA 4-digit airfoil.
IN THIS VIDEO:
We code the four popup menus that appear in the GUI: Grid Type, Trailing Edge, Plot As, and Save Style.
Popup Menu Video:
https://goo.gl/aY6DoQ
IN THIS SERIES:
Part 1/10 : https://goo.gl/9UBgbo
Part 2/10 : https://goo.gl/jRRcYJ
Part 3/10 : https://goo.gl/rSVLHo
Part 4/10 : https://goo.gl/HwHB39
Part 5/10 : https://goo.gl/AlDne8
Part 6/10 : https://goo.gl/7n1QP7
Part 7/10 : https://goo.gl/nTGleR
Part 8/10 : https://goo.gl/ez247P
Part 9/10 : https://goo.gl/8mXYcc
Part 10/10: https://goo.gl/ovBlbW")
![Explained: Flap Track Fairings/Whitcomb Area Rule [Airplanes]](https://i.ytimg.com/vi/y100a_nB984/mqdefault.jpg "Explained: Flap Track Fairings/Whitcomb Area Rule [Airplanes]
What are flap track fairings and what purpose do they serve on an airplane? These canoe-shaped pieces house linkages and mechanisms that connect the flaps to the wing. As an added bonus (if designed correctly), they can help decrease the wave drag by something known as area-ruling.
Reference(s):
http://www.aerospaceweb.org/question/aerodynamics/q0240.shtml")
