![]() Ed Schrock of Virginia sought $30 million in appropriations to conduct such research in 2001. “On top of that, the Navy conducts night flights to simulate real-world combat, so the jets do awaken people.” “The noise created by the F/A-18 is environmentally disruptive,” said UM researcher Larry Ukeiley. An estimated 2,000 homeowners surrounding the Naval Air Station Oceana in Virginia Beach are affected by various fighter aircraft, such as the F/A-18 Hornet and Super Hornet. ![]() The study was funded to address community concerns in Virginia Beach, Va., after residents there filed a lawsuit against the federal government claiming their quality of life and property values declined because of noise pollution associated with the fighter jets. “This is a first in more than 50 years of research that the aircraft’s thrust wasn’t compromised.” “Past research has successfully suppressed jet noise, but always at the expense of performance,” Seiner said. The results show the new seals reduced the aircraft’s noise by four decibels. The team conducted a full-scale engine test using the new technology this summer at the Naval Air Warfare Center Division in Lakehurst, N.J. The tests were done on F/A-18E/F Super Hornet aircraft. The seals keep hot gases from leaking into and damaging other parts of the nozzle when movable flaps, called internal divergent flaps, operate to maintain performance at various airspeeds. Seiner, a former NASA engineer, replaced flat seals on parts of the exhaust nozzle with corrugated ones. “Not only did we completely eliminate the jets’ shock noise, we also experienced good infrared reduction while increasing the engine’s thrust.” “The engine test was successful,” Seiner said. Led by John Seiner, the center’s associate director, the four-person team has made important advances. The Office of Naval Research initiated acoustic suppression studies for F/A-18 fighter jets in 2002, providing NCPA with $2.5 million for the project. In field testing, the modified nozzles also increased engine performance and showed promise to help aircraft elude missiles equipped with heat-seeking sensors. Scientists at the UM National Center for Physical Acoustics have found that small modifications to the engine exhaust nozzles can significantly reduce the noise produced by Navy fighter jets. OXFORD - The window-rattling scream of high-performance fighter jets is a familiar sound for people living near many military bases, but acoustics researchers at the University of Mississippi have found a way to tone down the jets’ engine noise. The new technology also may have applications in commercial aviation. Seiner and his team developed the flaps to reduce engine noise from the Navy’s high-performance F/A-18 fighter jets. All rights reserved.John Seiner, associate director of the National Center for Physical Acoustics at the University of Mississippi, checks out the installation of new engine flaps during testing at the Naval Air Warfare Center Division in Lakehurst, N.J. Includes F/A-18E Super Hornet: The Albanian Campaign.A vast world and challenging AI opponents. ![]() A wide variety of missions, from air superiority to Wild Weasel.Key guide and complete pilot notes included! Indulge yourself and test your skills inside the Super Hornet's fully interactive cockpit. The Navy's best pilots have proven this sleek and efficient machine's worth over real battlefields. Grab the flight stick and take control of your 3-D aircraft with unbelievably accurate weapon systems, 20 detailed training missions, 40 combat missions in two war-zones in changing weather conditions.įrom the makers of the award winning Apache Longbow comes the U.S. ![]() Your orders have arrived and your mission is clear: utilize the F/A-18E Super Hornet’s full air-to-air and air-to-ground attack capabilities to seek out and destroy enemy targets on an unlimited number of flight sorties. ![]()
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