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This page collects some projects, often in close collaboration with friends, or lab reports. Some "flesh and blood" stuff, finally!



Spectroscopy

Plasma jet spectroscopy
This document reviews basic emission spectroscopy techniques, applied to a plasma jet and ablation of a carbon specimen. Atomic and molecular species are identified from the spectrum, and plasma and wall temperatures are retrieved.



Load cells & aerodynamics


Supersonic measurements & flow visualization
This report details some measurements performed on a rocket ogive at supersonic speeds (Mach 3.5). The following points are covered:

  • Calibration of a tri-axial load cell;
  • Measurement of the ogive aerodynamic coefficients;
  • Schlieren and shadowgraph imaging;
  • Oil visualization & water table.
This report was prepared in collaboration with Ruben di Battista and Maxim Van Cappellen.




Data Acquisition on the Road
This document is about the design and building of a full low-price system for measuring aerodynamic forces. The system is composed by a load cell and a data acquisition system to be mounted out of the window of a moving car: in this way, one can build a scaled wing or any other lifting shape and test it super cheaply. Done in collaboration with Davide Del Cont Bernard.




Road Spectra
Me and my friend Davide Del Cont Bernard have instrumented a bicicle frame with strain gauges and then measured load spectra along some roads in Milan. The document describes the strain gauge configuration, a data acquisition circuit and of course contains some nice images!



Real Gases


Butane data acquisition
This pdf is about a system I scratch-built to compress a gas and find it's equation of state. The system is interfaced to the computer, using Octave to read data and plot it real-time: temperature, pressure and piston position are displayed. I experimented with a butane/propane commercial mixture: collected data is fitted on the van der Waals and Redlich-Kwong laws and compared to literature Span-Wagner model for butane.

Please note that a poor calibration for the pressure sensor and a little possible gas leackage while moving the piston made data unreliable.. Hope you'll find that useful anyway :)