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ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.:/5 (317 download)
Download or read book Analysis of Interior Noise Ground and Flight Test Data for Advanced Turboprop Aircraft Applications written by and published by . This book was released on 1991 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781723183973
Total Pages : 148 pages
Book Rating : 4.1/5 (839 download)
Download or read book Interior Noise Control Ground Test Studies for Advanced Turboprop Aircraft Applications written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-18 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: The measurement and analysis procedures are documented, and the results of interior noise control ground tests conducted on a DC-9 aircraft test section are summarized. The objectives of these tests were to study the fuselage response characteristics of treated and untreated aircraft with aft-mount advanced turboprop engines and to analyze the effectiveness of selected noise control treatments in reducing passenger cabin noise on these aircraft. The results of fuselage structural mode surveys, cabin cavity surveys and sound intensity surveys are presented. The performance of various structural and cabin sidewall treatments is assessed, based on measurements of the resulting interior noise levels under simulated advanced turboprop excitation. Simpson, Myles A. and Cannon, Mark R. and Burge, Paul L. and Boyd, Robert P. Unspecified Center AIRCRAFT COMPARTMENTS; DC 9 AIRCRAFT; NOISE PREDICTION (AIRCRAFT); NOISE REDUCTION; NOISE TOLERANCE; SOUND TRANSMISSION; TURBOPROP AIRCRAFT; ACOUSTICS; FULL SCALE TESTS; FUSELAGES; GROUND TESTS; NOISE INTENSITY...
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ISBN 13 :
Total Pages : 160 pages
Book Rating : 4.:/5 (317 download)
Download or read book Interior Noise Control Ground Test Studies for Advanced Turboprop Aircraft Applications written by and published by . This book was released on 1989 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781723470400
Total Pages : 194 pages
Book Rating : 4.4/5 (74 download)
Download or read book Uhb Demonstrator Interior Noise Control Flight Tests and Analysis written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-23 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt: The measurement and analysis of MD-UHB (McDonnell Douglas Ultra High Bypass) Demonstrator noise and vibration flight test data are described as they relate to passenger cabin noise. The analyses were done to investigate the interior noise characteristics of advanced turboprop aircraft with aft-mounted engines, and to study the effectiveness of selected noise control treatments in reducing passenger cabin noise. The UHB Demonstrator is an MD-80 test aircraft with the left JT8D engine replaced with a prototype UHB engine. For these tests, the UHB engine was a General Electric Unducted Fan, with either 8x8 or 10x8 counter-rotating propeller configurations. Interior noise level characteristics were studied for several altitudes and speeds, with emphasis on high altitude (35,000 ft), high speed (0.75 Mach) cruise conditions. The effectiveness of several noise control treatments was evaluated based on cabin noise measurements. The important airborne and structureborne transmission paths were identified for both tonal and broadband sources using the results of a sound intensity survey, exterior and interior noise and vibration data, and partial coherence analysis techniques. Estimates of the turbulent boundary layer pressure wavenumber-frequency spectrum were made, based on measured fuselage noise levels. Simpson, M. A. and Druez, P. M. and Kimbrough, A. J. and Brock, M. P. and Burge, P. L. and Mathur, G. P. and Cannon, M. R. and Tran, B. N. Unspecified Center AIRCRAFT COMPARTMENTS; AIRCRAFT NOISE; FLIGHT TESTS; NOISE REDUCTION; SOUND TRANSMISSION; TURBOPROP ENGINES; MD 80 AIRCRAFT; NOISE SPECTRA; PRESSURE DISTRIBUTION; TURBOPROP AIRCRAFT; TURBULENT BOUNDARY LAYER; VIBRATION TESTS...
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ISBN 13 :
Total Pages : 1638 pages
Book Rating : 4.:/5 (31 download)
Download or read book Monthly Catalogue, United States Public Documents written by and published by . This book was released on 1995 with total page 1638 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : United States. Superintendent of Documents
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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (89 download)
Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
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ISBN 13 :
Total Pages : 1096 pages
Book Rating : 4.3/5 ( download)
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Author : Advisory Committee on Technology and Society
Publisher : National Academies Press
ISBN 13 : 9780309037860
Total Pages : 1298 pages
Book Rating : 4.0/5 (378 download)
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ISBN 13 :
Total Pages : 648 pages
Book Rating : 4.:/5 (317 download)
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ISBN 13 :
Total Pages : 538 pages
Book Rating : 4.3/5 (91 download)
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ISBN 13 :
Total Pages : 176 pages
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ISBN 13 :
Total Pages : 654 pages
Book Rating : 4.:/5 (319 download)
Download or read book NASA SP. written by and published by . This book was released on 1992 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hanno H.. Heller
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ISBN 13 :
Total Pages : 538 pages
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Author : Roy D. Hager
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ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (317 download)
Download or read book Advanced Turboprop Project written by Roy D. Hager and published by . This book was released on 1988 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 212 pages
Book Rating : 4.:/5 (319 download)
Download or read book The Shock and Vibration Digest written by and published by . This book was released on 1990 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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Total Pages : 1144 pages
Book Rating : 4.:/5 (89 download)
Download or read book Government Reports Annual Index written by and published by . This book was released on 1992 with total page 1144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
