An Investigation of Active Noise Reduction of Jet Engine Runup Noise PDF Download
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Author: Robert G. Gibson
Publisher:
ISBN:
Category : Jet planes
Languages : en
Pages : 130
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Book Description
Author: Robert G. Gibson
Publisher:
ISBN:
Category : Jet planes
Languages : en
Pages : 130
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Book Description
Author: Edmund E. Callaghan
Publisher:
ISBN:
Category : Jet engines
Languages : en
Pages : 27
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Book Description
The back pressure of a properly located screen an the engine is negligible and permits operation at rated engine conditions. The thrust loss of the system is prohibitively large for flight installation, but the system offers considerable promise as a low-cost, portable, ground run-up noise-reduction device.
Author: Norman Doelling
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 180
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Book Description
Author: Great Britain. Noise Advisory Council. Research Sub-Committee
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 30
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Book Description
Author: W. C. Sperry
Publisher:
ISBN:
Category : Noise
Languages : en
Pages : 150
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Book Description
Author: Bonard E. Morse
Publisher:
ISBN:
Category :
Languages : en
Pages : 116
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 116
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 16
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Book Description
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 698
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Book Description
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781719396455
Category :
Languages : en
Pages : 48
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Book Description
This report reviews all engine noise research conducted at the NASA Glenn Research Center over the past 70 years. This report includes a historical perspective of the Center and the facilities used to conduct the research. Major noise research programs are highlighted to show their impact on industry and on the development of aircraft noise reduction technology. Noise reduction trends are discussed, and future aircraft concepts are presented. Since the 1960s, research results show that the average perceived noise level has been reduced by about 20 decibels (dB). Studies also show that, depending on the size of the airport, the aircraft fleet mix, and the actual growth in air travel, another 15 to 17 dB reduction will be required to achieve NASA's long-term goal of providing technologies to limit objectionable noise to the boundaries of an average airport. Huff, Dennis L. Glenn Research Center ENGINE NOISE; NOISE INTENSITY; NOISE REDUCTION; AEROACOUSTICS; TURBOFAN ENGINES; AIR TRANSPORTATION; AIRPORTS
