The SWIRL glue gun is part of the GRACO line of products. The nozzle is powered by a small brushless motor, with a variable controllable speed of 0 to 24,000 rpm.

This is a simple utility that allows the user to rename files and directories in bulk. This is especially useful when certain files need to be opened in UNIX systems.
We all know how tedious it can be to have to do this manually!

A bad sizing can make industrial plants very inefficient. However, the sizing is not always simple, because efficiency can depend on poorly intuitive and not very predictable factors if a numerical simulation of real functioning is not performed.

Red is a program I wrote to facilitate both writing and calculating thermal relationships.
Current features include:
- Each time a new variable is declared, an object reflecting this variable is created in the â_osymbol legendâ__ section which is automatically managed.
- Cover page including project title and other information
- Multiple chapters, each including a list of variables and their description
- Multiple units of measure, the program automatically converts between them
- Possibility to add text
- Contextual menus which automatically adapt to the selected object
- Print output reflects exactly what is shown on screen
- Sequential input of objects, designed to resemble a word processor
- Formulas can be inserted or visualized in any order.
The main feature of this software is its similarity to a word processor. It is not meant to be a programming language and is therefore different from other math software such as MatLab and MathCad.

Throughout my professional life Iâ_Tve had to write several programs to aid me in calculating cam cinematics. The following images show examples of an aspiration cam for a 4-stroke engine.

This software calculates the torque and power curves of a 4-stroke engine given the dimensions and specifications of its components. The program also calculates the camsâ_T law of motion.
The curves of torque and power are obtained by applying the laws of thermodynamics to the aspiration and exhaust conduits as well as to the cylinder where the combustion process is simulated.
Observing the pressure curve inside the conduits it is possible to deduce the *portate istantanee* in the valve section and therefore the instantaneous torque of the engine. The model also takes into account the chemical composition of the gas in every section of the conduit and the cylinder

This is a small program that uses the equations of fluid dynamics to simulate a system comprised of a tank of known volume connected through a valve to a hose of constant size.
At timestamp zero the valve initiate an open-close cycle that lasts for 0.008 seconds.
The conduit is subjected to a pressure wave that propagates until the end of the conduit, where it is reflected back into the conduit.
The program allows the user to change some input parameters and outputs the waveform. In addition the top graph shows the pressure in the tank as well as in two points of the conduit (definable by the use).

The geometry of the horn allows a sound reproduction without distortion.

The geometry of the horn allows a sound reproduction without distortion.