This is an animation of an asynchronous electric motor in Microsoft Excel. You can download the model by clicking on the icon below and try to run it.
A video demonstration of the virtual harmonograph running through a series of sixteen preset patterns.
A video review of the 3-pendulum animated harmonograph model together with the tutorials (part #1, part #2).
This is a video preview of an animated triple spring mass damper system moving in a 2-dimensional space. The model will work in all versions of excel but it will be slow in 2007 and 2010.
This is a video preview of the Simple Spring-Mass-Damper System model and the Double Spring-Mass-Damper System previously presented on this blog.
Since not everybody has Excel and more and more people are on the dumbed down new versions (2007 and 2010) I am presenting these previews to give the readers a feel of the real speed and feel of some of the models in older Excel versions (in this case 2003). This preview refers to an older model.
This is a video preview of the Fourier transform model presented on this blog before. A tutorial explaining the creation of such a model was posted here too.
This is an improved version of the Aeroscope – the “Aeroscope_4”. It runs about 50% faster. Also if you start the model by clicking the green “Fly_by_settings” button you can fly hands-free and adjust parameters during the flight. You can at any time click the red dot in the center of the chart and start the joystick macro, which means that now you “pilot” the plane by the stick. Clicking…
In this version, the vertical joystick movement controls the incidence of both the main wing and the horizontal stabilizer (opposite variation) and the horizontal movement of the joystick controls the position of the center of mass.
This is an upgraded version of the aeroscope. Besides improving of certain aspects of the old version, this version has both the main wing and the horizontal stabilizer controlled by a virtual joystick (presented on this blog before and used extensively). The horizontal movement of the joystick controlls the angle of attack of the main wing and the vertical movement controlls the angle of attack of the horizontal stabilizer. I…
This is the “Aeroscope”, an oscilloscope style 2D dynamic flight simulator. It uses a the glider model designed in the previous tutorial. The glider is fully adjustable so you can change different parameters during the flight. Just hit “Run_pause” and the model will start. Reset it using the red button whenever you wish or whenever it breaks the convergence. For very low speeds or very large angles of attack (>20…
This section updates an angle formula so that the virtual glider can now perform both backward and forward loops, as well as inverted flight.
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 with a crude interface.
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.