Interior Noise Control Ground Test Studies for Advanced Turboprop Aircraft Applications PDF Download
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Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781723183973 Category : Languages : en Pages : 148
Book Description
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...
Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781723183973 Category : Languages : en Pages : 148
Book Description
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...
Author: Advisory Committee on Technology and Society Publisher: National Academies Press ISBN: 9780309037860 Category : Social Science Languages : en Pages : 1298
Book Description
Cities and Their Vital Systems asks basic questions about the longevity, utility, and nature of urban infrastructures; analyzes how they grow, interact, and change; and asks how, when, and at what cost they should be replaced. Among the topics discussed are problems arising from increasing air travel and airport congestion; the adequacy of water supplies and waste treatment; the impact of new technologies on construction; urban real estate values; and the field of "telematics," the combination of computers and telecommunications that makes money machines and national newspapers possible.
Author: National Aeronautics and Space Administration (NASA)
Author: National Aeronautics and Space Administration (NASA)
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Author: Advisory Committee on Technology and Society
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