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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

Farewell, FLIP! Renowned Navy-Owned Research Platform Retired after 60 Years of Service

A dynamic era in naval oceanography recently ended as the iconic Floating Instrument Platform — popularly known as FLIP — was officially retired from service. Built in 1962 with funding from the Office of Naval Research (ONR), FLIP helped generations of scientists and oceanographers better understand the mysteries of the sea, including internal waves, air-sea interaction and long-range sound propagation. Sadly, age and exorbitant life-extension costs resulted in the platform being disestablished. On Aug. 3, a solemn gathering of well-wishers watched as FLIP was towed, at sunset, to a dismantling and recycling facility. Last month, a formal good-bye ceremony was hosted by the Marine Physical Laboratory at the University of California, San Diego (UCSD). Though retired, FLIP will live on at Scripps. One of its booms (crane-like arms for suspending instruments) will be installed on the Scripps research pier in La Jolla and used to deploy instruments. Also, artifacts from the platform will be displayed in a permanent exhibit at Scripps’ Birch Aquarium.

August 16, 2023

ONR Global Gaining Insight into the Effects of Glacial Melting in Coastal Regions

A research project from the Office of Naval Research (ONR) Global is providing valuable information about the effects of melting glaciers in Patagonia that feed into coastal fjords, transporting sediments, freshwater and nutrients. Dr. Chris Konek, science director at ONR Global in Chile, said the research will help the Department of the Navy (DoN) understand the effects of a changing climate on the coastal environment. “That’s the kind of the thing the Marines need to be able to handle,” he said. “It’s basic research and so it will help provide a fundamental understanding of this aspect of coastal systems where you can expect more things like this to happen in the future – more glacial melting as opposed to less.” Cristian Escauriaza, professor, Pontificia Universidad Católica de Chile, is the principal investigator along with his university colleague, Megan Williams. They are working with the Filantropía Cortés-Solari, a conservation organization that owns and manages the Melimoyu Elemental Reserve in northern Patagonia. Patagonia is largely remote with a diverse ecosystem and a rich array of wildlife, including penguins and blue whales. Konek said ONR Global is interested in Escauriaza’s project for its potential to inform what’s happening to that ecosystem, which can also help inform what’s happening to other coastal regions experiencing the same challenges.

February 14, 2024

TechSolutions and Marines Bring a Decades-Old Process into the 21st Century

Assessing surf zone conditions has never been an exact science for the Department of the Navy. That’s about to change thanks to a recent request to TechSolutions, which has resulted in new surf observation (SUROB) technology to make operational forecasts more precise. For the past six months, a team of scientists and engineers from the Naval Research Lab (NRL) and the U.S. Army’s Engineering Research and Development Center (ERDC) have been developing the technological tools needed to create a more precise surf observation report. In order to gain greater insight into how the surf observation tool may improve warfighter operations, NavalX recently organized a workshop that brought together the science and engineering developers with the Sailors and Marines who would use it. TechSolutions received the request less than a year ago for a technology-driven solution for surf observation from Maj. Zachary Taylor, a technology officer with the Marines’ Warfighting Lab. Within weeks, TechSolutions began working with the development team at NRL and ERDC to come up with a prototype.

April 04, 2024

Non-Destructive Evaluation (NDE) and Prognostics: Advanced Sensors and Technologies

Non-Destructive Evaluation and Prognostics is a two-tiered research area within the Office of Naval Research's Sea Warfare and Weapons Department.

March 18, 2022

Basic Research for Electro-Optic/Infrared (EO/IR) Sensors and Sensor Processing

BAA Call N00014-24-S-BC01 Special Programs Announcement for Office of Naval Research (ONR) Research Opportunity: Basic Research for Electro-Optic/Infrared (EO/IR) Sensors and Sensor Processing

October 02, 2023

History-Making Oceanographer and Ret. Navy Captain Dies at 92

Retired U.S. Navy Capt. Don Walsh, best known for his daring dive to the deepest spot on Earth, nearly 36,000 feet below the ocean’s surface, has died at age 92. Walsh was a co-pilot of the Trieste bathyscaphe, a deep submergence vehicle acquired by the Office of Naval Research (ONR) in 1958. Two years later, on January 23, 1960, Walsh and Swiss engineer Jacques Piccard, son of the inventor of the bathyscaphe, became the first humans to descend into the Challenger Deep, located in the Pacific Ocean’s Mariana Trench. “ONR sponsored the Trieste, but it was then-Lt. Don Walsh who made the very daring decision to make the first descent into the deepest spot of the earth’s ocean. Walsh was a Navy officer, a submariner, an adventurer, and an oceanographer. To his family, we extend our deepest condolences and gratitude for allowing him to explore, and share his extraordinary experiences and knowledge with us,” said Chief of Naval Research Rear Adm. Kurt Rothenhaus.

November 16, 2023

National Strategy on Aquatic Environmental DNA

Today, the White House Office of Science, Technology, and Policy (OSTP) released the “National Strategy for Aquatic Environmental DNA.” The Environmental DNA (eDNA) Task Team had 10 federal agencies participating in drafting the strategy and included significant scoping and engagement of the private sector, academia and non-profit organizations.

June 03, 2024

Space Sensors & Effects

The Space Sensor & Effects objective is to develop and experiment with key technology enablers that provide effective and resilient Intelligence, Surveillance, Reconnaissance & Targeting (ISRT) capabilities as affordable and proliferated space-borne sensors for littoral & maritime environments.

March 18, 2022

Revolutionizing the Waves: A Breakthrough in Surf Observation Technology for Sailors and Marines

The Office of Naval Research Global TechSolutions program recently demonstrated the latest advancement in surf observation (SUROB) technology at the Technical Concept Experiment 24.2 held at Marine Corps Base Camp Pendleton, California.

October 17, 2024