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A Mighty Wind: Using Wind Tunnels to Measure Sound by Deadening the Noise

The Office of Naval Research (ONR) sponsored a project at Virginia Tech University nearly 20 years ago that is now growing in influence across the world for measuring aerospace and aeronautical acoustics. Since noise reverberates against solid surfaces, such as the walls of a wind tunnel where acoustical testing takes place, collecting accurate sound data had been nearly impossible at the time. Researchers were also struggling to discern the sound of the wind tunnel’s air flow from the noise of the object traveling through it. After learning about some experiments on Kevlar as a wind screen, William Devenport, an engineering professor and director of Virginia Tech’s Stability Wind Tunnel, said he and a colleague wrote a proposal to then-ONR program officer Ron Joslin to try adding Kevlar to their wind tunnel walls. Devenport submitted the original grant proposal (N00014–04–1–04933) through the FY 2004 Defense University Research Instrumentation Program (DURIP) for alterations to Virginia Tech’s existing Stability Wind Tunnel that would allow it to measure flow-induced noise of relevance to Navy applications.

August 14, 2023

Metamaterials

The Office of Naval Research's Metamaterials program supports basic research on optical and acoustic metamaterials to control light and sound propagation over a large frequency range.
March 18, 2022

Operational Endurance from Environmental Carbon

The Office of Naval Research's Operational Endurance from Environmental Carbon program seeks technology development to support sustainable carbon neutral operational energy processes and materials for U.S. Navy and U.S. Marine Corps needs.
March 18, 2022

Thermal Science and Engineering

The Office of Naval Research's Thermal Science and Engineering program advances thermal science through fundamental studies of multi-phase heat transfer, fluid dynamics and nanostructured materials.
March 18, 2022

Electric Power Components and Systems

The Office of Naval Research's Electric Power Components and Systems program supports the Navy’s interest in advanced naval power and energy systems research and technology.
March 18, 2022

Biofouling Control

Naval assets, large and small, spend months to years at sea exposed to considerable biofouling pressures. The Office of Naval Research's Biofouling Control program sponsors research to develop antifouling/fouling release coatings and the mechanics underlying such materials.
March 18, 2022

Computer-Aided Materials Design (CAMD)

The Office of Naval Research's Computer-Aided Materials Design (CAMD) program funds research projects in materials design.
March 18, 2022

Materials Treatment and Recovery

The Navy faces the complex task of efficiently managing diverse material streams, either generated as operational byproducts or at the end of their service life. The Office of Naval Research's Materials Treatment and Recovery program ensures their appropriate treatment and recovery.
March 18, 2022

Advanced Power and Energy for Undersea Applications

The Office of Naval Research's Advanced Power and Energy for Undersea Applications program aims to develop component, subsystem and system technologies for advanced high-energy density and power density propulsion systems, and to enable increased endurance and reliability in an air-independent environment.
March 18, 2022

Fuel Flexibility for Contingency Operations

The Office of Naval Research's Fuel Flexibility for Contingency Operations program comprises basic and applied research to support naval needs for operational energy resilience and sustained operations when conventional fuels are not abundantly available. This program seeks technological breakthroughs to enable the generation of synthetic fuels from abundant and logistically compatible resources.
March 18, 2022