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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

Resilient Structures

The Office of Naval Research's resilient structures research area endeavors to develop structural configurations, materials and technologies to enable self-sustainable, self-repairable and highly damage resistant structures.
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

Multi-scale Mechanics

The Office of Naval Research's multi-scale mechanics research area endeavors to develop multiscale and multiphysics mechanics theories that bridge the nano scale to the continuum scale to predict material and structural strength.
March 18, 2022

Cooperative Autonomous Swarm Technology (CAST)

The Office of Naval Research's CAST program seeks to develop technologies to enable cooperative operations of unmanned maritime systems including unmanned underwater vehicles (UUVs), unmanned surface vessels (USVs) and weapons in a wide range of mission areas.
March 18, 2022

Ship Signatures (Radar, Infrared, Acoustic)

The Office of Naval Research's Ship Signatures program supports the Navy’s interest in advanced sea platform survivability science and technology, and submarine science and technology.
March 18, 2022

Ship Structural Reliability

The Office of Naval Research's Ship Structural Reliability program is focused on the development of reliability-based knowledge and tools to improve performance and affordability of naval ship hull structures from cradle to grave.
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