Hi, I’m Camren Watkins. This summer, I worked with Dr. Rajan Kumar and Bryce Outten on a project investigating supersonic cavity flows using Particle Image Velocimetry (PIV). Our focus was on understanding how cavity doors, similar to those on fighter aircraft like the F-22, influence the airflow when opened at Mach 1.6 and Mach 2. Cavities internal compartments that house components such as landing gear or missiles are typically modeled as simple rectangular cutouts. However, real aircraft cavities often include doors and structural features, making the flow more complex and less understood. To explore this, we used a wind tunnel model with doors at 90° and 67° angles, incorporating inner and outer wedge shapes to simulate real-world configurations. Using PIV, we seeded the flow with fog particles and used high-speed lasers and cameras to visualize and measure the velocity fields around and inside the cavities. This method allowed us to capture the dynamic flow behavior caused by door motion and geometry changes. The results will help improve our understanding of cavity-induced instabilities and inform the aerodynamic design of high-speed aircraft.