The airflow around the landing gear is a significant contributor to the noise aircraft make as they come in to land. If we can predict this airflow before the aeroplane’s been built, we can quickly iterate designs to ensure the landing gear is as quiet as possible. Airflow is an important consideration because many people live under aircraft flight paths. In this simulation, computers were used to predict the flow around a commercial jet’s landing gear. Because the landing gear is not very streamlined, the airflow is very complicated and unsteady, with lots of vortices. Vortices are a noise source, so reducing their size and prevalence will make the landing gear less noisy.