Arching overhead, the farfield microphone array of the AeroAcoustic Propulsion Lab is used to measure sound produced by the nozzles tested in the Nozzle Acoustic Test rig.

What makes the Dome unique? Topping the list is the ability to vent the hot engine exhaust through the large door of the Dome without using noisy flow collectors. And since anechoic wedges are installed on all surfaces inside the 65 foot radius geodesic dome, far-field sound measurements aren’t contaminated by community noise or by reflections from lab equipment.

The AeroAcoustic Propulsion Lab has access to continuous flow compressed air at 100 psi, 150 psi, and 450 psi, as well as to compressed gas trailers (typically natural gas and hydrogen). Couple these services with the state-of-the-art instrumentation we have, and it is hard to imagine a better place to solve complicated aircraft engine noise problems.