Corbishley Aero-Acoustics
Shaping Silence, Perfecting Performance
Our business is dedicated to advancing innovation in the field of aeroacoustics, with expertise spanning aerodynamics, acoustics, and hydrodynamics.
Specialising in areas such as propeller noise analysis, flow-structure interactions, and hypersonics, we combine cutting-edge CFD and analytical methods. Whether addressing noise regulation compliance, enhancing aerodynamic designs, or pioneering quieter and more efficient systems, we deliver results grounded in precision and innovation.
Partner with us to lead at the forefront of engineering excellence.
Capabilities
Propeller Noise Fields
Our analytical model predicts the noise generated by propellers, leveraging the Ffowcs-Williams and Hawkings equation to account for variable blade geometry and motion. At low Mach numbers, the primary source of sound arises from the unsteady forces acting on the blades. These forces can be predicted using computational fluid dynamics (CFD) or simple analytical methods. Such approaches facilitate the design of optimally quiet propellers tailored to specific inflow conditions.
Broadband Noise Models
Broadband noise is predicted through the approximation of random, unsteady aerodynamic interactions between the propeller blades and turbulent inflow. Statistical descriptions of turbulence are coupled with our propeller noise formulations to calculate the distributed noise sources and their resulting sound fields. Haystacking around blade tones is predicted using the cross-correlation between the forces on propeller blades.
Computational Methods
We use Computational Fluid Dynamics to simulate the flow fields around more complex flow structures. From these models, we can extract turbulence characteristics and surface pressure fluctuations for use in our modelling of the broadband and tonal noise components.