This document summarizes a study that used Particle Image Velocimetry (PIV) and shadowgraphy techniques to analyze the parameters of fuel droplets from a spray, including velocity and vorticity. PIV involves using tracer particles and cameras to measure velocity fields in fluids, while shadowgraphy visualizes particles using backlighting. The study used these methods with a CCD camera, Nd-YAG laser, and fuel nozzle to analyze kerosene and diesel sprays. Results showed droplet velocities from 1.2-8 m/s, with higher pressures increasing velocity. Vorticity was highest at the nozzle tip and decreased with distance. Adding a co-flow reduced droplet velocities. These techniques