Research on active noise control for fans, advanced low noise for fan designs and jet noise; Langley Research Center as the lead NASA center for overall noise reduction package.KandeboStanleyW.EBSCO_AspAviation Week & Space TechnologyNASA Studies engine Noise. W. K. Staniey. Aviation Week and...
Major NASA noise research programs are highlighted, showing their impact on the industry and on the development of aircraft noise reduction technology. Noise reduction trends are discussed, and future aircraft concepts are presented. Results show that, since the 1960s, the average perceived noise ...
Jet noise reduction technology development at GE aircraft engines Several years ago, GE Aircraft Engines realized that with the expected increased stringency ofStage 4 noise regulations, the continued thrust growth of eng... S Martens 被引量: 39发表: 2002年 The potential of future aircraft technolo...
NASA/TM-2005-212144 Evaluation of the Advanced Subsonic Technology Program Noise Reduction Benefits Since its founding, NASA has been dedicated to the advancement of aeronautics and space science. The NASA Scientific and Technical Information (STI) Program Office plays a key part in helping NASA main...
NASA’sX-59 Quiet SuperSonic Technologyaircraft continued assembly at Lockheed Martin’s Skunk Works facility, reaching milestones such as the final testing of itseXternal Vision Systemand the vehicle’s airframesupportingits own weight. Other equipment needed to test the vehicle’...
says mehdi khorrami, an aerospace scientist at nasa’s langley research center in virginia. he part of team of researchers across nasa who are figuring out ways to make planes quieter. when you think of noise, you probably think of the sound of a jet engine. and the companies that build ...
BWB is basically a flying wing with the payload, i.e., passengers and cargo, enclosed in the thick, airfoil shaped, center section. Studies have shown remarkable performance improvements for the BWB over a conventional subsonic transport configuration discussed above based on equivalent technology....
(There are probably many more that I either do not know about or are classified). For example, NASA is currently collaborating with GE on an open rotor jet engine that is being tested at the Glenn research facility in Cleveland. The design will allow for the reduced fuel consumption that ...
NASA DEM是对STRM数据的再处理,通过纳入ASTER GDEM、ICESat GLAS和PRISM数据集的辅助数据,提高了精度。 最重要的处理改进涉及通过改进相位解包和使用ICESat GLAS数据进行控制来减少空隙。 Dataset Availability 2000-02-11T00:00:00 - 2000-02-22T00:00:00 ...
“Maybe if they were able to perfect the technology, make it safer” I shook my head, “But even then there’s still things that can go wrong”. “All methods of rocketry are inherently dangerous, Judy” Bill pointed out, “Our thrusters on Saratoga are based on 20 year old t...