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Navy Growler jet noise over Whidbey Island could impact 74,000 people’s health

A new study from the University of Washington finds that Navy Growler jet noise in Whidbey Island exposes over 74,000 people to harmful levels of noise. The research reveals that repeated exposure to high-intensity and low-frequency noise can lead to stress hormone responses, hearing impairment, and sleep disturbance.

SourceUniversity of Washington·JournalJournal of Exposure Science & Environmental Epidemiology·TypeData/statistical analysis·DateMay 10, 2024

The West is best to spot UFOs

A new study analyzed 98,000 UAP sighting reports over a 20-year period, finding that the majority occurred in western parts of the US. The researchers identified 'hot spots' with high numbers of reports and 'cold spots' with low numbers.

SourceUniversity of Utah·JournalScientific Reports·TypeData/statistical analysis·DateFeb 27, 2024

How the military could speed helicopter operations on the battlefield

Researchers developed a mathematical model that accounts for variables such as helicopter resources and operational range to optimize air movement tasks. The model can perform planning functions in under an hour, saving commanders three to five hours compared to traditional methods.

SourceNorth Carolina State University·JournalJournal of Defense Analytics and Logistics·TypeComputational simulation/modeling·DateMay 22, 2023

Air Force aircraft returned from Vietnam is postwar source of Agent Orange contamination

A study by Columbia University's Mailman School of Public Health reveals that Air Force reservists who flew in dioxin-contaminated aircraft after the Vietnam War were exposed to higher levels of dioxin than previously acknowledged. The findings challenge the current position held by the Air Force and VA.

On airplanes, fiber optics poised to reach new heights

Researchers have invented an optical on-off switch that can replace electrical wiring on airplanes with fiber optics for controlling elevators, rudders, and other flight-critical elements. This technology also has potential applications on highways as a 'weigh-in-motion' sensor for measuring the weight of fast-moving commercial trucks.

SourceOptica·JournalOptics Letters·DateSep 18, 2006

Coal source of jet fuel for next generation aircraft

Researchers at Penn State have created a thermally stable coal-based jet fuel, provisionally designated as JP900, which can absorb significant amounts of heat and remain stable up to 900 degrees Fahrenheit. This fuel has potential benefits in reducing engine deposits and improving cold weather performance.

Making a CACE for it

The Marine Corps has developed an automated suite of tools called the Coherent Analytical Computing Environment (CACE) to help simplify complex mission planning. The CACE Decision Support Suite can produce four weeks' worth of flight schedules in just 15 minutes, reducing the time spent on scheduling from hours to minutes.

Nonlinear flight control

Researchers have developed seven nonlinear control laws for multi-axis control of high-performance aircraft, which could potentially save battle-damaged planes from combat. These approaches have shown spectacular results on simplified models but display pathological responses on higher fidelity simulation models.

Noise reduction

The Active Tuned Mass Absorber (ATMA) system reduces propeller-induced sound in turbo-prop aircraft, improving passenger comfort and enhancing military surveillance. With over 200 units installed on DC-9 and MD-80 aircraft, ATMA has proven effective in reducing interior noise levels by up to 90%.