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Статті в журналах з теми "Aircraft cabins Noise Measurement"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 1 лютого 2022

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1

Hughes, Stanley T., and Jefferson Koonce. "Cabin Noise Levels in Single Engine General Aviation Aircraft." Proceedings of the Human Factors Society Annual Meeting 30, no. 14 (September 1986): 1381–85. http://dx.doi.org/10.1177/154193128603001408.

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Анотація:

Sound level measurements were made on several of the most popular general aviation aircraft produced. Measurements were taken at various flight milestones such as; run up, taxi, climb, cruise power and descent. For each of the aircraft a time weighted mission sound level was obtained, using three different mission scenarios, varying only in flight time. For each of the three scenarios, and for all aircraft, the time weighted noise values obtained were an or exceeded the 85 dBA limit recommended by NIOSH. The results of this study indicate that a substantial percentage of general aviation pilot

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2

Kong, Qing Fu, Yu Liang Dai, Shi Jian Zhu, and Jia Ming Wu. "Experimental Study on an Active Noise Control System for Turboprop Driven Aircraft." Applied Mechanics and Materials 333-335 (July 2013): 2142–45. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.2142.

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In order to find a solution to the control of low frequency noise in the cabin of turboprop driven aircraft, an experimental active noise control (ANC) system is introduced in the paper, which consists of vibroacoustic field analogue subsystem, acoustic field measurement subsystem and acoustic barrier exciter subsystem. Effects of both different spaces between the primary sound source and secondary sound source of the ANC system and different frequency noises on noise-reduction result are investigated based on the experimental platform. Results of the experiment show a significant potential of

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3

Joshi, Pankaj, Frank Khelfa, Hendrik Lehmkuhl, Patrick Cordes, Patrick Naujoks, Thorsten Scharowsky, and Kay Kochan. "Design, development and testing of digital MEMS pressure sensor array for full-scale vibroacoustic measurements." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 2 (August 1, 2021): 4343–54. http://dx.doi.org/10.3397/in-2021-2671.

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This manuscript addresses design, development, and application of micro-electro-mechanical systems (MEMS) based digital pressure sensor array for vibroacoustic measurements. These vibroacoustic measurements were conducted on a A320 type single aisle aircraft demonstrator subjected to broadband as well as tonal excitations. Cabin noise levels were measured with both condenser microphones as well as digital MEMS pressure sensor array. The measured cabin noise shows strong qualitative as well as quantitative agreement between both type of measurement devises for full scale cabin noise measurement

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4

Spehr, Carsten, Daniel Ernst, and Hans-Georg Raumer. "MEMS microphone intensity array for cabin noise measurements." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 3 (August 1, 2021): 3023–34. http://dx.doi.org/10.3397/in-2021-2288.

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Aircraft cabin noise measurements in flight are used toto quantify the noise level, and to identify the entry point of acoustic energy into the cabin. Sound intensity probes are the state-of-the-art measurement technique for this task. During measurements, additional sound absorbing material is used to ease the rather harsh acoustic measurement environment inside the cabin. In order to decrease the expensive in-flight measurement time, an intensity array approach was chosen. This intensity probe consists of 512 MEMS-Microphones. Depending on the frequency, these microphones can be combined as

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5

PAČAIOVÁ, Hana, Marianna TOMAŠKOVÁ, Michaela BALÁŽIKOVÁ, and Jozef KRAJŇÁK. "Analysis of air-traffic threats." Scientific Journal of Silesian University of Technology. Series Transport 110 (March 1, 2021): 143–55. http://dx.doi.org/10.20858/sjsutst.2021.110.12.

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Globally, air transport has seen a greater increase in recent years. This manuscript is divided into three parts for analysing the negative effects of aviation. The first part is focused on the identification of sources of aircraft noise. While the second part of this article describes the basic principles of the construction and operation of an aircraft jet engine concerning the gaseous emissions produced by such an engine (Third part missing?). The main benefit of this article is the evaluation of the reliability of the human factor because the human factor is an integral part of technical s

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6

Schüür, Jens, Lukas Oppermann, Achim Enders, Rafael R. Nunes, and Carl-Henrik Oertel. "Emission analysis of large number of various passenger electronic devices in aircraft." Advances in Radio Science 14 (September 28, 2016): 129–37. http://dx.doi.org/10.5194/ars-14-129-2016.

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Abstract. The ever increasing use of PEDs (passenger or portable electronic devices) has put pressure on the aircraft industry as well as operators and administrations to reevaluate established restrictions in PED-use on airplanes in the last years. Any electronic device could cause electromagnetic interference to the electronics of the airplane, especially interference at receiving antennas of sensitive wireless navigation and communication (NAV/COM) systems. This paper presents a measurement campaign in an Airbus A320. 69 test passengers were asked to actively use a combination of about 150

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7

Zettel, Sebastian, René Winter, Marco Norambuena, Marc Böswald, Martin Richter, and Gregor Tanner. "Finite element method and dynamical energy analysis in vibro-acoustics - A comparative study." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 5 (August 1, 2021): 1712–22. http://dx.doi.org/10.3397/in-2021-1906.

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Future aircraft concepts utilizing innovative lightweight structures and novel propulsion concepts are a necessity for long term sustainable air travel. These concepts pose new challenges for the vibro-acoustic assessment of cabin structures and the associated noise impact on passengers. Finite Element (FE) models derived from aircraft pre-design data are not optimized for use in acoustic analyses, i.e. the mesh is too coarse to provide meaningful results while setting up Statistical Energy Analysis models for this specific purpose is adding another time-consuming step. A possible alternative,

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8

Ross, Colin F. "Active noise control in aircraft cabins." Journal of the Acoustical Society of America 105, no. 2 (February 1999): 1243. http://dx.doi.org/10.1121/1.425969.

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9

Kloss, Corinna, Vicheith Tan, J. Brian Leen, Garrett L. Madsen, Aaron Gardner, Xu Du, Thomas Kulessa, et al. "Airborne Mid-Infrared Cavity enhanced Absorption spectrometer (AMICA)." Atmospheric Measurement Techniques 14, no. 8 (August 2, 2021): 5271–97. http://dx.doi.org/10.5194/amt-14-5271-2021.

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Abstract. We describe the Airborne Mid-Infrared Cavity enhanced Absorption spectrometer (AMICA) designed to measure trace gases in situ on research aircraft using Off-Axis Integrated Cavity Output Spectroscopy (OA-ICOS). AMICA contains two largely independent and exchangeable OA-ICOS arrangements, allowing for the simultaneous measurement of multiple substances in different infrared wavelength windows tailored to scientific questions related to a particular flight mission. Three OA-ICOS setups have been implemented with the aim to measure OCS, CO2, CO, and H2O at 2050 cm−1; O3, NH3, and CO2 at

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10

Takahashi, Kosaku, Hirotaka Monzen, Toshihiro Yamaoka, Koji Kusumoto, Kazuhiro Bansaku, Jyunichi Kimoto, Akira Isoe, Yasuo Hirose, Tomio Sanda, and Yuji Matsuzaki. "Noise and vibration reduction technology in aircraft cabins." Advanced Composite Materials 13, no. 1 (January 2004): 67–80. http://dx.doi.org/10.1163/1568551041408787.

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11

Rady de Almeida Junior, Jorge, Magali Andreia Rossi, Mário Corrêa, Javier Francisco Ramirez‐Fernandez, Vicente Carlos Poli, and Genivaldo José de Menezes. "Analysis of noise in aircraft cabins through the VHF channel." Aircraft Engineering and Aerospace Technology 84, no. 4 (June 29, 2012): 213–20. http://dx.doi.org/10.1108/00022661211237737.

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12

Alvelid, M. "Nonlinear Fluid-Structure Interaction in Propeller Aircraft Cabins." Journal of Vibration and Acoustics 119, no. 3 (July 1, 1997): 363–73. http://dx.doi.org/10.1115/1.2889732.

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Анотація:

A procedure for studying the acoustic superharmonic response in propeller aircraft cabins subject to stationary single frequency load excitation is proposed. The harmonic balance method is used to solve the nonlinear fluid-structure interaction multi-degree-of-freedom problem at hand. In the problem studied, the structure is nonlinear while the fluid remains linear. In the solution method proposed, generalised coordinates of the assumed series expansion for the displacements are used as unknowns. Two examples, simulating an aircraft structure with a fluid cavity, are examined. The present calc

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13

Gao, Jie, and Ning Qiang. "Multi-objective Optimized Design for Intermediate-Frequency Noise Reduction in Aircraft Cabins." Wireless Personal Communications 102, no. 4 (February 6, 2018): 3737–47. http://dx.doi.org/10.1007/s11277-018-5405-2.

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14

Marant, Vincent, Antonio Reig Fabado, Juan Luís Aguilera De Maya, and José Christian Donayre Ramírez. "Passive and active designs for noise and vibrations reduction in aircraft cabins." Journal of the Acoustical Society of America 123, no. 5 (May 2008): 3525. http://dx.doi.org/10.1121/1.2934463.

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15

Tandon, N. "Aircraft Noise." Noise & Vibration Worldwide 34, no. 4 (April 2003): 11–14. http://dx.doi.org/10.1260/095745603321832471.

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Анотація:

Various noise measurement parameters/indices used to define aircraft and airport noise are explained. The noise zone limits used around airports in some countries are given. Noise prediction software can be used to generate noise contours around airports. New aircraft noise certification standards have been developed to encourage control of aircraft noise at source. Aircraft noise can also be reduced if noise abatement landing and take-off procedures are followed.

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16

Bukhtiyarov, I. V., M. F. Vilk, V. D. Glukhovskiy, N. N. Kurierov, V. A. Kaptsov, V. B. Pankova, and L. V. Prokopenko. "Updating the assessment methodology of the acoustic load of flight crew members in the cabins of civil aviation aircraft." Russian Journal of Occupational Health and Industrial Ecology, no. 2 (February 21, 2020): 100–116. http://dx.doi.org/10.31089/1026-9428-2020-60-2-100-116.

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Анотація:

The article discusses the issues of adjustment, developed in 2007 and supplemented in 2009, of the methodology for evaluating the equivalent level of cabin noise of civil aviation aircraft in Russia. The relevance of the problem is due to high levels of professional hearing loss among the aircrew members of the air force, which is directly related to the lack of unified and competent approaches to assessing the acoustic load on the hearing organ of the aircrew members. The updated methodology contains full-fledged data on noise levels in modern domestic and foreign airliners, data on certifica

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17

Igarashi, Juichi, and Ichiro Yamada. "Aircraft noise monitoring by short-term measurement." Journal of the Acoustical Society of Japan (E) 10, no. 4 (1989): 197–204. http://dx.doi.org/10.1250/ast.10.197.

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18

Snell, Andrew, and Darren Wallis. "The Flight Path of Aircraft Noise Measurement." Measurement and Control 34, no. 3 (April 2001): 69–71. http://dx.doi.org/10.1177/002029400103400302.

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19

Tavossi, Hasson M. "Active and passive techniques for a cost-effective noise reduction in the interior of aircraft cabins." Journal of the Acoustical Society of America 138, no. 3 (September 2015): 1941. http://dx.doi.org/10.1121/1.4934131.

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20

Fang, Zhaosong, Hong Liu, Baizhan Li, and Andrew Baldwin. "Investigation of thermal comfort and the nozzle usage behaviour in aircraft cabins." Indoor and Built Environment 28, no. 1 (November 10, 2017): 118–31. http://dx.doi.org/10.1177/1420326x17739446.

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Анотація:

In order to understand passengers’ demand for thermal comfort in aircraft cabins, we carried out a measurement of thermal environment parameters and thermal comfort field survey in an aircraft cabin under cruising at altitude in both summer and winter. The results showed that the air temperature studied was always kept within the range of 25℃ to 28℃ and the relative humidity was maintained within the range of 20% to 35%. The Mean Thermal Sensation Vote (MTSV) of passengers’ back and feet was higher than other local body parts, with lower air movement sensation. The MTSV of passengers in winter

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21

Stansfeld, S. A., C. R. Clark, G. Turpin, L. M. Jenkins, and A. Tarnopolsky. "Sensitivity to noise in a community sample: II. Measurement of psychophysiological indices." Psychological Medicine 15, no. 2 (May 1985): 255–63. http://dx.doi.org/10.1017/s0033291700023539.

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SynopsisA sample of 77 women of high and low noise sensitivity in 1977, living in areas of high and low exposure to aircraft noise, were interviewed in the community in 1980. High, intermediate and low noise sensitive women were compared, using measures of blood pressure, heart rate, skin conductance, hearing threshold, uncomfortable loudness level and magnitude estimation of six tones. These physiological measures did not clearly distinguish different noise sensitivity groups, except that highly noise sensitive women had a consistently slower heart rate. Noise sensitivity was not related to a

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22

Kroesen, Maarten, and Dirk Schreckenberg. "A measurement model for general noise reaction in response to aircraft noise." Journal of the Acoustical Society of America 129, no. 1 (January 2011): 200–210. http://dx.doi.org/10.1121/1.3514542.

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23

McKinley, Richard L., Alan T. Wall, Theo A. van Veen, and Jaap van't Hof. "Measurement methods for high-performance jet aircraft noise inside a hardened aircraft shelter." Journal of the Acoustical Society of America 142, no. 4 (October 2017): 2514. http://dx.doi.org/10.1121/1.5014180.

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24

Shivashankara, Belur N., and Gene W. Stubbs. "Ground plane microphone for measurement of aircraft flyover noise." Journal of Aircraft 24, no. 11 (November 1987): 751–58. http://dx.doi.org/10.2514/3.45517.

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25

Li, Yong, Malcolm Smith, and Xin Zhang. "Measurement and control of aircraft landing gear broadband noise." Aerospace Science and Technology 23, no. 1 (December 2012): 213–23. http://dx.doi.org/10.1016/j.ast.2011.07.009.

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26

Bukhtiyarov, Igor V., Nicolay N. Courierov, Alla V. Lagutina, Lyudmila V. Prokopenko, and Evgeny V. Zibarev. "Aircraft noise in residential areas, problems of measuring and evaluation." Hygiene and sanitation 99, no. 10 (November 30, 2020): 1042–48. http://dx.doi.org/10.47470/0016-9900-2020-99-10-1042-1048.

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Анотація:

The intensity of civil aircraft flights elevates with the increase in the number of passenger and cargo transportation by air. Aircraft noise in the residential area near airports grows up too despite the use of low-noise aircraft models by airlines. This causes an augmentation in the number of complaints of the population in these areas. The Russian Federation’s normative and methodological documents requirements in force relating to measurements and assessment of noise in residential areas, including «aircraft noise», were analyzed. Their requirements in terms of measuring and assessing nois

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27

Dekoninck, Luc. "Detecting and Correlating Aircraft Noise Events below Ambient Noise Levels Using OpenSky Tracking Data." Proceedings 59, no. 1 (December 3, 2020): 13. http://dx.doi.org/10.3390/proceedings2020059013.

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Анотація:

Noise annoyance due to aircraft operations extends well beyond the 55 Lden noise contours as calculated according to the Environmental Noise Directive (END). Noise mapping beyond these contours will improve the understanding of the perception, annoyance and health impact of aircraft operations. OpenSky data can provide the spatial data to create an aircraft noise exposure map for lower exposure levels. This work presents the first step of region-wide noise exposure methodology based on open source data: detecting low LAmax aircraft events in ambient noise using spectral noise measurements and

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28

Vidović, Andrija, Igor Štimac, and Robert Zečević-Tadić. "Aircraft Noise Monitoring in Function of Flight Safety and Aircraft Model Determination." Journal of Advanced Transportation 2017 (2017): 1–10. http://dx.doi.org/10.1155/2017/2850860.

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This paper presents the research of noise level monitoring at the Zagreb Airport Ltd. The purpose of this paper is to show how the aircraft noise sources can be used as a tool for aircraft detection and for increasing flight safety. The noise measurement was made at the Zagreb Airport by using its professional noise monitoring system. The research has led to new findings, such as determining the aircraft model by measuring the noise level generated by an aircraft during final approach based on its frequency spectrum, as the connectivity from the airport’s side to the radar data was unavailable

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29

Cieślak, Sławomir, and Wiesław Krzymień. "Drivetrain Noise of The Gyroplane I-28." Transactions on Aerospace Research 2018, no. 1 (March 1, 2018): 7–16. http://dx.doi.org/10.2478/tar-2018-0001.

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Abstract Gyroplanes, as ultralight aircraft, are popular transport vehicles recently. Ultralight aircraft flights take place at a low altitude – their noise is not without effect on people and nature. The localization of the sources of noise and a possibility to decrease the noise of an gyroplane are described in this paper. The rules of design and exploitation of gyroplanes do not define the limits of emitted noise. Gyroplanes are not noisy aircraft vehicles but for their silencing the knowledge about the sources and frequency range of noise is necessary. The goal of the conducted measurement

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30

Schwarzbach, Paul, Julia Engelbrecht, Albrecht Michler, Michael Schultz, and Oliver Michler. "Evaluation of Technology-Supported Distance Measuring to Ensure Safe Aircraft Boarding during COVID-19 Pandemic." Sustainability 12, no. 20 (October 21, 2020): 8724. http://dx.doi.org/10.3390/su12208724.

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With the rise of COVID-19, the sustainability of air transport is a major challenge, as there is limited space in aircraft cabins, resulting in a higher risk of virus transmission. In order to detect possible chains of infection, technology-supported apps are used for social distancing. These COVID-19 applications are based on the display of the received signal strength for distance estimation, which is strongly influenced by the spreading environment due to the signal multipath reception. Therefore, we evaluate the applicability of technology-based social distancing methods in an aircraft cab

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31

Yan, Guo Hua, Wen Qian Song, and Shi Qi Liu. "Test Noise Procedures for Transport Category and Turbojet Airplanes." Applied Mechanics and Materials 602-605 (August 2014): 2473–77. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.2473.

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Aircraft noise is the chief source of the airport and its peripheral areas. CCAR imposes restriction on specific categories of aircraft and requires more strict measurements of the noise. More scientific measurement method is required to meet the progressively tighter certification standards. Test noise procedures for transport category and turbojet airplanes are analyzed in this paper. The main aspects involved are: test sit requirements, aircraft flight path guidance, aircraft position determination, take off tests, lateral tests and approach tests.

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32

Woo, Jeong Ha, and Byung Chan Lee. "A Noise Prediction Method on the Movement Measuring Points at Measurement for Aircraft Noise." Transactions of the Korean Society for Noise and Vibration Engineering 25, no. 12 (December 20, 2015): 901–6. http://dx.doi.org/10.5050/ksnve.2015.25.12.901.

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33

Genescà, Meritxell, Jordi Romeu, Robert Arcos, and Sara Martín. "Measurement of aircraft noise in a high background noise environment using a microphone array." Transportation Research Part D: Transport and Environment 18 (January 2013): 70–77. http://dx.doi.org/10.1016/j.trd.2012.09.002.

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34

Morinaga, Makoto, Takanori Matsui, Sonoko Kuwano, and Seiichiro Namba. "An experiment on the feeling of separation when multiple aircraft noises are overlapped." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 4 (August 1, 2021): 2058–63. http://dx.doi.org/10.3397/in-2021-2041.

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In order to calculate the A-weighted single event sound exposure level () of aircraft noise, the following method is described in the manual for aircraft noise measurement in Japan. Firstly a time-section, which is the range between two points where the noise level is 10 dB lower than the maximum noise level (), should be identified, and secondly the energy within the section is integrated. This method can easily be applied to the single event noises. When multiple aircraft noises are overlapped simultaneously, there are cases where cannot be calculated adequately by this method. In such cases

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35

Jategaonkar, R. V., and E. Plaetschke. "Algorithms for aircraft parameter estimation accounting for process and measurement noise." Journal of Aircraft 26, no. 4 (April 1989): 360–72. http://dx.doi.org/10.2514/3.45769.

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36

Ncube, France, Esper Jacobeth Ncube, and Kuku Voyi. "Bioaerosols, Noise, and Ultraviolet Radiation Exposures for Municipal Solid Waste Handlers." Journal of Environmental and Public Health 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/3081638.

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Few studies have investigated the occupational hazards of municipal solid waste workers, particularly in developing countries. Resultantly these workers are currently exposed to unknown and unabated occupational hazards that may endanger their health. We determined municipal solid waste workers’ work related hazards and associated adverse health endpoints. A multifaceted approach was utilised comprising bioaerosols sampling, occupational noise, thermal conditions measurement, and field based waste compositional analysis. Results from our current study showed highest exposure concentrations for

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37

Chen, Tao, Hong Hou, Zhi Fei Chen, and Cheng Kun Jiang. "Measurement of ARJ21 Aircraft Landing Gear Noise Using Array Signal Processing Technology." Advanced Materials Research 588-589 (November 2012): 747–50. http://dx.doi.org/10.4028/www.scientific.net/amr.588-589.747.

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Анотація:

Flyover noise measurements were conducted on an aircraft ARJ21 aiming at landing gear noise prediction schemes. The analysis is based on acoustic dedopplerized spectra and localization maps was calculated with the pressure signals of a acoustic phased array with 30 microphones. The acoustic phased array is a spatially distributed set of microphones which simultaneously sample the acoustic field. The doppler shifts was removed using linear interpolation.By appropriately time delaying the output of individual microphones, the origin and level of noise source(the landing gear) can potentially be

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38

Nakazawa, Toshiyasu, and Naoaki Shinohara. "Study on aircraft noise directivity of behind the start of takeoff roll." INTER-NOISE and NOISE-CON Congress and Conference Proceedings 263, no. 3 (August 1, 2021): 3202–8. http://dx.doi.org/10.3397/in-2021-2330.

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Анотація:

This paper discusses aircraft noise directivity behind the start of takeoff roll. Aircraft noise has the radiation directivity because of aircraft engine mount position and the engine noise directivity. Thus, lateral noise directivity correction is recommended in airport noise calculation guidelines such as ECAC Doc.29 and ICAO Doc9911. In these guidelines, the directivity of flyover noise and the directivity at the start of takeoff roll on ground are prepared separately. A 90-degree dipole model is used for the directivity of the flyover noise, and another similar directivity is used for the

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39

Водопьян, Е. А., Т. Н. Середа та В. И. Рябков. "АНАЛІЗ МЕТОДІВ ЗНИЖЕННЯ АВІАЦІЙНОГО ШУМУ В ДЖЕРЕЛІ І НА МІСЦЕВОСТІ". Open Information and Computer Integrated Technologies, № 84 (2 липня 2019): 144–56. http://dx.doi.org/10.32620/oikit.2019.84.07.

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Анотація:

Currently, the topic of research of the aircraft noise influence on the environment is relevant. Aircraft and engine developers are constantly exploring ways to reduce noise following the new standards of the ICAO Committee (CAEP), whose main task is to protect the environment from the effects of aviation, to provide a comfortable environment for people exposed to aircraft noise and harmful substances. By limiting the permissible noise level of aircraft, CAEP initiates aircraft manufacturers to introduce the latest noise reduction technologies in their design. Measurement of aircraft noise is

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40

Pang, Liping, Pei Li, Xiaodong Cao, and Xiaoru Wanyan. "Experimental study of the changes in thermal expectation during simulated flights in a civil aircraft cabin mockup." Indoor and Built Environment 29, no. 9 (May 18, 2020): 1277–88. http://dx.doi.org/10.1177/1420326x20925113.

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Анотація:

Aircraft cabin thermal environment is a key issue on flight selection by passengers, especially for long-haul flights. Currently, there have been some studies on the passengers’ thermal comfort in civil aircraft cabins. However, information is still limited on the changes in passenger thermal expectation with flight time. In this study, an aircraft cabin mockup was built, and three experiments involving human subjects were carried out in order to study the in-flight thermal environment in winter, summer and autumn, respectively. The cabin temperatures during the experiments were controlled acc

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Gee, Kent L., Victor W. Sparrow, Michael M. James, J. Micah Downing, Christopher M. Hobbs, Thomas B. Gabrielson, and Anthony A. Atchley. "Measurement and Prediction of Noise Propagation from a High-Power Jet Aircraft." AIAA Journal 45, no. 12 (December 2007): 3003–6. http://dx.doi.org/10.2514/1.28985.

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Bhattarai, Mohan K., and B. K. Sapkota. "Study on Aircraft Noise Around Tribhuvan International Airport, Kathmandu, Nepal." Nepal Journal of Science and Technology 15, no. 1 (February 4, 2015): 139–44. http://dx.doi.org/10.3126/njst.v15i1.12031.

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Present work was carried out to collect primary data from the field with the help of noise meter and thus spatial anddiurnal variation of background and aircraft noise level was analyzed. Seventeen sampling sites were chosennearby Tribhuwan International Airport (TIA) and air route of aircraft flyover. Noise measurements were carried outunder normal atmospheric environmental condition at temperature ranges from 25°C-30°C excluding rainy andwindy days. Among the sampling sites, the Equivalent Continuous Noise Level (LAeq) of background noise measuredmaximum at Balkumari (73.2 dBA) and minimum a

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Ganić, Emir, Jurica Ivošević, and Bojana Mirković. "Impact of Aircraft Noise on Communities Near Belgrade Airport." Promet - Traffic&Transportation 33, no. 3 (May 31, 2021): 323–35. http://dx.doi.org/10.7307/ptt.v33i3.3692.

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The aim of this research was to examine the impact of aircraft noise on communities near the Belgrade Airport by conducting short-term noise measurements. Apart from the noise abatement procedure published in the Aeronautical Information Publication for Belgrade Airport, there are still neither publicly available reports of the actual efforts made towards the aircraft noise reduction nor the description of the current noise situation. In order to estimate the current noise situation, eighteen aircraft overflight noise measurements were taken in two settlements in specific sound-sensitive commu

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Meng, Qing Hai. "Impulsive Noise Detection and Elimination Method for GPS Measurement Data." Applied Mechanics and Materials 556-562 (May 2014): 2783–86. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.2783.

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For GPS measurement signal in aircraft experiment is often affected by transmission environment, and interfered with impulsive noise, hereby a SVD combined with wavelet neural network to detect and eliminate the impulsive noise method was proposed. The received GPS data is decomposed by SVD, and the decomposed component is acted as the input of wavelet neural network. Letts criterion is adopted to detect the impulsive noise according to the output residue error of the wavelet neural network. For the detection of the interference points of impulse noise, it can use wavelet network output to rep

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Jäger, David, Christoph Zellmann, Felix Schlatter, and Jean Marc Wunderli. "Validation of the sonAIR aircraft noise simulation model." Noise Mapping 8, no. 1 (January 1, 2021): 95–107. http://dx.doi.org/10.1515/noise-2021-0007.

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Abstract sonAIR is a recently developed aircraft noise simulation model designed for single flight simulation while still being applicable for calculation of entire airport scenarios. This paper presents a rigorous validation exercise, wherein roughly 20’000 single flights were simulated using the 22 currently available sonAIR emission models of turbofan aircraft and compared against noise measurements. The measurements were recorded with the noise monitoring terminals at Zurich and Geneva airport, Switzerland, and with additional microphones installed by the author’s institution. Data from 22

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Choirunisa, Ristyna. "Hearing Loss And Health Complaints In Technicians Air Skadron 3 Iswahjudi Airport And Its Association With Aircraft Noise." JURNAL KESEHATAN LINGKUNGAN 11, no. 1 (February 1, 2019): 61. http://dx.doi.org/10.20473/jkl.v11i1.2019.61-68.

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Aviation is the most significant part of Indonesian Air Force duty. Air Force’s aircraft takes a role not only as Indonesian army agency transportation vehicle but also crucial for Indonesian air territory security protection. However the level of noises resulted from Air Force aviation operation activity such as take off of aircraft reached 130 dBA, so the operation can causes auditory and non auditory adverse effects such as communication, physiological disorder, and psycological disorder. The aim of this study is to analyze factors induced to the hearing loss and analyze the effects of airc

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Sun, J., S. P. Burns, D. Vandemark, M. A. Donelan, L. Mahrt, Timothy L. Crawford, T. H. C. Herbers, G. H. Crescenti, and J. R. French. "Measurement of Directional Wave Spectra Using Aircraft Laser Altimeters." Journal of Atmospheric and Oceanic Technology 22, no. 7 (July 1, 2005): 869–85. http://dx.doi.org/10.1175/jtech1729.1.

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Abstract A remote sensing method to measure directional oceanic surface waves by three laser altimeters on the NOAA LongEZ aircraft is investigated. To examine feasibility and sensitivity of the wavelet analysis method to various waves, aircraft motions, and aircraft flight directions relative to wave propagation directions, idealized surface waves are simulated from various idealized aircraft flights. In addition, the wavelet analysis method is also applied to two cases from field measurements, and the results are compared with traditional wave spectra from buoys. Since the wavelet analysis m

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Stansfeld, S. A., C. R. Clark, L. M. Jenkins, and A. Tarnopolsky. "Sensitivity to noise in a community sample: I. Measurement of psychiatric disorder and personality." Psychological Medicine 15, no. 2 (May 1985): 243–54. http://dx.doi.org/10.1017/s0033291700023527.

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SynopsisA sample of 77 women of high and low noise sensitivity, living in areas of high and low exposure to aircraft noise drawn from the 1977 West London Survey, were interviewed in the community in 1980. Women of high, intermediate and low noise sensitivity in 1980 were compared for measures of psychiatric disorder, personality and reactivity to the other sensory stimuli. In addition, the noise sensitivity measures defining the three groups in 1980 were compared with further measures of noise sensitivity. High noise sensitive women exhibited significantly more psychiatric symptoms, higher ne

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Kloet, N., S. Watkins, and R. Clothier. "Acoustic signature measurement of small multi-rotor unmanned aircraft systems." International Journal of Micro Air Vehicles 9, no. 1 (February 9, 2017): 3–14. http://dx.doi.org/10.1177/1756829316681868.

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This work describes the testing involved in generating an acoustic signature profile of a small multi-rotor unmanned aircraft system. A typical multi-rotor unmanned aircraft system, with a weight of approximately 2.1 kg, was used for sound pressure level measurements. This study established a relationship between distance, altitude and sound pressure level, finding that the sound decays approximately in line with 6 dB(A) reduction for a doubling of distance. The effect of the orientation of the multi-rotor unmanned aircraft system was also investigated. It was determined that the sound profile

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Riadiany, Pradita Wira, and Sugeng Abdullah. "STUDI TENTANG INTENSITAS SUARA DANUPAYA PENGENDALIAN KEBISINGAN DI BANDAR UDARAHUSEIN SASTRANEGARA BANDUNG TAHUN 2014." Buletin Keslingmas 34, no. 1 (March 31, 2015): 36–53. http://dx.doi.org/10.31983/keslingmas.v34i1.3022.

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PDAM Tirtawening Environmental Quality Control Measurement Laboratory Bandung stated thatHusein Sastranegara airport had highest noise intensity equal to 89.83 dB (A) so that the researcherwants to investigate the sound intensity and noise control in the Husein Sastranegara airport Bandung2014.The research design used was descriptive research which was intended to obtain vivid descriptionrelated sound intensity and noise control in Husein Sastranegara airport Bandung 2014 with five-pointmeasurement that describes the apron (aircraft parking space), check in / luggage space and the ticketproces

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