Uploaded March 2014 | Updated September 2026, 1 week ago
Rain gutters are little strips of material above doors that allow you to stay dry as you get on or off a plane. They also help keep the interior of the plane dry.
Horizontal rain gutter:
airliners.net/photo/Untitled-%28Trans-World/Lockheed-L-1011-385-1-TriStar/0197040/L/&sid=030cda10fed5df9cd077f6437194798e
Slanted rain gutter:
airliners.net/photo/Trans-World-Airlines/Lockheed-L-1011-385-1-15-TriStar/0689474/L/&sid=030cda10fed5df9cd077f6437194798e
Rain gutters are little strips of material above doors that allow you to stay dry as you get on or off a plane. They also help keep the interior of the plane dry.
Horizontal rain gutter:
airliners.net/photo/Untitled-%28Trans-World/Lockheed-L-1011-385-1-TriStar/0197040/L/&sid=030cda10fed5df9cd077f6437194798e
Slanted rain gutter:
airliners.net/photo/Trans-World-Airlines/Lockheed-L-1011-385-1-15-TriStar/0689474/L/&sid=030cda10fed5df9cd077f6437194798e
![Explained: Taylor-Maccoll Conical Flow Overview [Taylor-Maccoll]
This is the first video in a series of videos about the supersonic flow over a cone at 0 degrees angle of attack. This is also known as Taylor-Maccoll conical flow, after the two guys that derived the equations and obtained solutions for this type of problem.
This video aims to introduce the general problem description and lay out the basic steps for the derivation/solution. More videos will follow as described in the video. Explained: Taylor-Maccoll Conical Flow Overview [Taylor-Maccoll]](https://i.ytimg.com/vi/v3EqbYGI_Hg/mqdefault.jpg)
![Explained: Isentropic Relations
In this video, we will go through the derivation of the isentropic relations. We will start with the combined 1st & 2nd law of thermodynamics (video [1] below for derivation of combined law). We will first assume a thermally perfect gas (video [2] below for explanation of e = e(T) and h = h(T)), and then later constrain the expression down for a calorically perfect gas (video [3] below for explanation about specific heats for TPG and CPG). To obtain the final isentropic relations, we will set the change in entropy equation equal to zero, and solve for the relationship between pressure, temperature, and density ratios between states 1 and 2.
RELEVANT VIDEOS
[1] : https://goo.gl/soiSr9
[2] : https://goo.gl/pdL6A8
[3] : https://goo.gl/hG2sJn
REFERENCES
► Notes by Matt MacLean
► Modern Compressible Flow, Anderson
► Elements of Gasdynamics, Liepmann and Roshko
► Gas Dynamics, Zucrow and Hoffman Explained: Isentropic Relations](https://i.ytimg.com/vi/vBNIp8cz1ik/mqdefault.jpg)

![Explained: Specific Heats (Cp & Cv)
In this video we will derive the expressions for the specific heats at constant volume and constant pressure from the combined first and second law of thermodynamics (video [1] below).
The expressions become simpler when we assume a thermally perfect gas, where the energy and enthalpy are only a function of temperature (video [2] below).
RELEVANT VIDEOS
[1] : https://goo.gl/soiSr9
[2] : https://goo.gl/pdL6A8
REFERENCES
:: Notes by Matt MacLean
:: Modern Compressible Flow, Anderson
:: Elements of Gasdynamics, Liepmann and Roshko
:: Gas Dynamics, Zucrow and Hoffman Explained: Specific Heats (Cp & Cv)](https://i.ytimg.com/vi/vmrXXN5d4iI/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: Slider GUI [MATLAB]](https://i.ytimg.com/vi/wGaPLzaHIps/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: Tilde to Discard Output [MATLAB]](https://i.ytimg.com/vi/wg7GTwsZL-Q/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: NACA 4-Digit GUI Part 4/10 [MATLAB]](https://i.ytimg.com/vi/x8ls10Euy-k/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: Radio Button GUI [MATLAB]](https://i.ytimg.com/vi/xN2fMYZgEOw/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: NACA 4-Digit GUI Part 7/10 [MATLAB]](https://i.ytimg.com/vi/x_iOVeqJCLA/mqdefault.jpg)