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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

Awesome Algorithms: Prize Challenge Tests Software Performance in Unmanned Vehicles

The Office of Naval Research (ONR), Naval Surface Warfare Center Crane Division (NSWC Crane) and the NavalX Midwest Tech Bridge recently sponsored a three-stage competition called the Artificial Intelligence for Small Unit Maneuvers (AISUM) Prize Challenge.
May 09, 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

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

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

Expeditionary Energy

The Office of Naval Research's Expeditionary Energy program seeks breakthrough technologies to support the future of hybrid and expeditionary warfare.
March 18, 2022

Power Generation and Energy Storage

The Office of Naval Research's Power Generation and Energy Storage program is focused on developing Navy power generation and energy storage systems and components to improve overall naval platform capability, efficiency and reliability.
March 18, 2022

Artificial Intelligence/Machine Learning for Photonics, Power & Energy, Atmospherics, and Quantum Science

The Office of Naval Research's Artificial Intelligence/Machine Learning for Photonics, Power & Energy, Atmospherics, and Quantum Science program is focused on machine learning techniques that can be applied to photonics, power and energy, thermal management and controls, atmospherics, communication, and quantum science for improved naval capabilities.
March 18, 2022