BRRC developed a new environmental noise model, entitled NoiseRunner, for DoD air weaponry operations. The project objectives were to (1) characterize the noise generated by airborne weapon systems, (2) evaluate and refine current weapon-noise propagation algorithms for airborne platforms, and (3) incorporate these refined algorithms and additional data requirements into a new noise model simulation. NoiseRunner enables a new set of operational scenarios to be modeled, assisting in public understanding of potential noise impacts and their mitigation.
Flight Trajectory Optimizer
BRRC has developed a flight trajectory optimization system that will provide the DoD with a tool to better balance the needs of reducing community noise impacts while maximizing the ability and effectiveness of training operations. Our optimization system provides the most cost effective near-term solution for jet noise reduction that can be applied to any military aircraft at any airfield for relatively small incremental costs. In addition, BRRC is developing advanced acoustic propagation and detection algorithms for use with Unmanned Aircraft Systems. Learn more...
NPS “Upgrades to NMSim Software”
BRRC has upgraded the current version of the National Park Service’s noise simulation model NMSim to include the Nord2000 propagation algorithm, and to allow for more advanced data input. Nord2000 is an advanced ray-tracing noise model that includes refraction by the atmosphere and diffraction around terrain. Other advancements include better importation of terrain data, and the ability to import vehicle trajectory files from external sources, such as shapefiles.
BRRC’s Rocket Noise Model - RUMBLE
BRRC developed the high-fidelity launch vehicle simulation model, RUMBLE, to predict community noise exposure from spaceport launch, reentry, or static rocket operations. RUMBLE has been used in over fifteen rocket noise environmental studies, ten of which were performed as part of FAA commercial space licensing applications. FAA AEE has reviewed and accepted the RUMBLE noise modeling method for use in all ten of these commercial space studies.