Introduction to Numerical Methods – Basic Filters #1
This post shows the steps for building a first model of a single pole RC low pass filter (LPF) in Excel based on numerical solution using the finite difference method. It is quite easy to understand,...
View ArticleIntroduction to Numerical Methods – Basic Filters #2
This post shows the steps for building a first model of a single pole RC high pass filter (HPF) in Excel based on numerical solution using the finite difference method. It is quite elementary to...
View ArticleHow to Model a Basic 2-body Planetary System
Here is a tutorial explaining how to model a two dimensional 2-body planetary system in Excel. It uses the Euler method of integration. The tutorial starts with explaining the simple Newtonian laws...
View ArticleA basic 3-body Planetary System
Hi folks, as a continuation to the previous tutorial here is a 3-body planetary model where the solution to the equations is contained in a static form, as a lookup table (I previously called it a...
View Article2D Projectile Motion Model #1 – a virtual tactical shooting range
Hi Folks, As a kid was fascinated with high power rifles, sniper rifles, cannons and in general, fast projectiles. I’ve been brainwashed with all sorts of urban legends about how far an AK 47 or a...
View Article2D Projectile Motion Tutorial #1
This part of the tutorial will show you how to create the simplest possible projectile motion model using standard kinematic formulas from the first year of high school. The variable parameters of the...
View Article2D Projectile Motion Tutorial #2
This part of the tutorial shows you how to animate the model created in the first part. Since it is addressed to beginners, this part of the tutorial will show you in detail how to create buttons and...
View Article2D Projectile Motion Tutorial #3
Now that we have a simple animated projectile motion (previous tutorial) let’s try to add on the chart the three instantaneous speed vectors associated with the projectile. These speed vectors are: the...
View Article2D Projectile Motion Tutorial #4
This tutorial derives the formulas of a projectile model taking into account the aerodynamic drag. A finite differences numerical method is used. Though fairly easy to apply and understand, this type...
View Article2D Projectile Motion Tutorial #5
This is the next in a series of projectile motion tutorials for creating 2D trajectory models using numerical analysis of projectile dynamics (including aerodynamic drag). The trajectory formulas were...
View ArticleHow to Model a Phase-Locked Loop (PLL) in Excel – part#1
A Phase-Locked Loop is a type of electronic circuit. It generates an oscillation with the same frequency as a reference oscillation and a relatively constant phase difference with respect to the same...
View ArticleAnimated Heat Transfer Modeling for the Average Joe – part #3
This section shows how to model heat transfer in a linear bar by dividing it in elementary sections in which the basic linear equations introduced in the previous tutorials can be used. Animated heat...
View ArticleLongitudinal Aircraft Dynamics #6 – worksheet implementation of the dynamics...
In this section, the parameters cl, cd and cm are scaled back to the force of lift, drag and the pitching moment of the aircraft. After that, the numerical modeling scheme is described together with...
View ArticleLongitudinal Aircraft Dynamics #7 – worksheet implementation of the dynamics...
This section continues the worksheet implementation of the dynamics formulas. [sociallocker][/sociallocker] Longitudinal Aircraft Dynamics #7- worksheet implementation of the real dynamics by George...
View ArticleLongitudinal Aircraft Dynamics #8 – worksheet implementation of the dynamics...
This section continues the worksheet implementation of the dynamics formulas for aerodynamic forces and momenta. [sociallocker][/sociallocker] Longitudinal Aircraft Dynamics #8- worksheet...
View ArticleLongitudinal Aircraft Dynamics #9 – more about forces and momenta –...
This tutorial finalizes the implementation of the forces and momenta acting on the plane. It also initiates some hand testing and validation of the overall dynamics of the plane....
View ArticleLongitudinal Aircraft Dynamics #10 – implementing the numerical method
This section of the turorial finalizes the main dynamics calculations and implements the numerical method for approximating the glider trajectory. At this point, the model is already functional but...
View ArticleLongitudinal Aircraft Dynamics #11 – full 360 degree operation – aerobatics,...
This section updates an angle formula so that the virtual glider can now perform both backward and forward loops, as well as inverted flight. [sociallocker][/sociallocker] Longitudinal Aircraft...
View ArticleA Legacy Animated Planetary Model – video preview
A preview of a legacy planetary model. [sociallocker][/sociallocker]
View ArticleAnimated Asynchronous Electric Motor Model in MS Excel
This is an animation of an asynchronous electric motor in Microsoft Excel. You can download the model by clicking on the icon below and trying to run it. What is an electric motor and how does an...
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