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Viewing 1 to 30 of 675
2010-10-17
Technical Paper
2010-36-0550
Aleksandras Jagniatinskas, Oleksandr Zaporozhets, Oleg Kartyshev, Boris Fiks
For assessment of the aircrafts noise impact on the community near to airports the acoustic calculations and measurements may be used. Obtained measurements results show ~1 dBA for LAeq coincidence with calculations results and allow to prepare correct database for practical use under ECAC method. While results of LAmax estimation still remain under investigation. These requirements are important first of all for aircraft, which are designed in FSU, Russian Federation and Ukraine. Their contribution to the aircraft noise impact in airports of FSU countries is still dominant, so their correct input data is still necessary.
2010-10-17
Technical Paper
2010-36-0517
P. B. Salazar, T. A. Heleno, J. G. Slama
The objective of this paper is to present a method of determination of airport noise levels and environment noise using computer simulation, thus reducing the need for physical measurements in the areas affected by airport noise. Through the simulations, the hourly airport noise was characterized for a wide range of critical receivers. Levels for airport and environment noise had been calculated, considering that environment noise is generated mostly by the flow of motor vehicles on the nearby roads. From the results of these simulations it was possible to choose points where continuous noise measurements are made. Using the simulated values, we hope to determine a safe and precise way of predicting the noise generated from airports throughout the country minimizing the needs of conducting physical measurements to obtain the noise curves.
2010-10-17
Technical Paper
2010-36-0522
Dominique Collin
The X-NOISE Coordination Action, through its network structure and comprehensive workplan involving expert groups, scientific workshops, stakeholder seminars and a common information system, addresses the aircraft noise challenges set by the ACARE 2020 Vision. To this end, X-Noise undertakes the elaboration and coordination of research strategies, the dissemination of results and the integration of European research activities in the field of air transport related to noise. Over 4 years, the project has involved strong participation from European Union-based organizations as well as significant contribution from international partners, combining the complementary skills and expertise of industry, SMEs, universities and research establishments to cover the whole field of interest.
2010-10-17
Technical Paper
2010-36-0520
Delia Dimitriu, Dragos Munteanu, Octavian Pleter
This paper is assessing two methods that can be used in assessing the airport noise capacity when new operational practices are implemented at a certain airport. The example given is CDA-continuous descent approach implemented at Bucharest Henri Coanda International airport in Romania. A review of the main operational practices related to CDO (Continuous Descent Operations) with relevance for noise and emissions reduction, shows the importance of working in a team when implementing new operational practices, as well as the need to access data either through FDR (flight data recorder) or from measurements. - The example selected explains the difficulties one can have to extract FDR data. Although the authors of this paper benefitted from FDR from TAROM, the Romanian national airline, it was difficult to be extracted, so the assessment of the airport noise capacity focused on monitoring and measurements undertaken under the flight path.
2010-10-17
Technical Paper
2010-36-0528
T. A. Heleno, P. B. Salazar, J. G. Slama
With the growth of urban areas, the areas adjacent to airports are becoming densely inhabited, causing a big problem known as encroachment. The encroachment occurs when a significant portion of the population is submitted to the adverse effects of noise, even outside the areas of restricted use established by the airport zoning. The metric used for the airport zoning in many countries and in Brazil is the DNL (Day Night Level). This metric is associated to the average sound energy produced by all aeronautical events during a period of 24 hours, with weighting of 10 dB(A) during the night. However, the use of DNL for airport zoning can lead to different results for noise levels, daytime and nighttime, depending on the seasonality of airport activity in those periods. The paper proposes a study of alternatives for the airport zoning based on the Brazilian Standard ABNT/NBR 10151.
1999-12-01
Technical Paper
1999-01-2988
Luciano B. Abrahão, Sílvio Palácios, Helcio Onusic, José Luis A Moraes Marc Straat, Sergio M. Andreatini
1928-01-01
Technical Paper
280031
H. E. MAHAN
1937-01-01
Technical Paper
370146
Hugo Eckener
THIS paper discusses the position of the airship as a means of transportation, briefly reviewing the history of the supposed but really non-existing competition between the airship and the airplane. The results of the Hindenburg's ten North Atlantic demonstration trips of 1936 are reported on, and the meteorological observations made are discussed. Figures of cost of operation and revenues of the Hindenburg are revealed, showing the relatively low cost of operation of the modern passenger airship. The relative places of the express steamer, the airship and the airplane in the future North Atlantic transport picture are discussed, and the necessity for cooperation between Germany and the United States in the future development of the airship is emphasized. Since Dr. Eckener presented this paper at the 1937 Annual Meeting of the Society, an increased 1937 schedule of Transatlantic service for the Hindenburg has been announced.
1937-01-01
Technical Paper
370003
L. C. McCarty
1938-01-01
Technical Paper
380066
Luis deFlorez
1938-01-01
Technical Paper
380049
John H. Towers
ABSTRACT
1955-01-01
Technical Paper
550253
C. E. Rosendahl
Control of aircraft noice in airport vicinities lies in two general directions. The first is in control of noise at its source — in the aircraft itself. The second is in the procedural measures in operation of the aircraft and is the subject of this paper. Measures adopted by the NATCC for application at the major civil airports in the New York-New Jersey metropolitan area are described here. They include: 1. A preferential runway utilization plan. 2. Accelerated climbouts stressing rapid gain of altitude. 3. Restriction of ground run-ups to specified locations. 4. Adoption of procedures particularly adapted to an individual airport. 5. Receipt and analysis of the public's complaints relative to aircraft noise. 6. A public information program designed to acquaint airport neighbors with aircraft matters. 7. Continuous effort at obtaining full compliance with adopted procedures.
1959-01-01
Technical Paper
590133
ROBERT P. HUBLEY
1959-01-01
Technical Paper
590107
HERBERT H. HOWELL
1957-01-01
Technical Paper
570211
MARTIN A. WARSKOW
1955-01-01
Technical Paper
550175
FRED M. GLASS
1956-01-01
Technical Paper
560040
Dr. Ross A. McFarland
THE human problem with jet aircraft begins even before take-off, the author points out, with discomfort and loss of efficiency from noise, and ground injuries on the field or in repair shops. In the air, although noise and vibration in the jet plane are less than with the reciprocating engine, human tolerance is matched against other extreme forces of acceleration, direction changes, temperature and pressure variations. Through detailed examination of what happens to passengers and crew in the many situations that can arise to challenge human limitations, the author shows why he believes there is need for closer cooperation between the biologist and the engineer, and for better education of crewmen in the effective use of their equipment and in their own physical limitations.
1959-01-01
Technical Paper
590296
THOMAS M. SULLIVAN
1951-01-01
Technical Paper
510022
R. DIXON SPEAS
1948-01-01
Technical Paper
480099
E. S. LAND (RET.)
1950-01-01
Technical Paper
500011
EDWARD H. BARKER
1950-01-01
Technical Paper
500077
HAL E. NOURSE
1947-01-01
Technical Paper
470164
O. E. KIRCHNER
1947-01-01
Technical Paper
470136
JOHN M. PICTON
1947-01-01
Technical Paper
470132
HARRY OTIS WRIGHT
1947-01-01
Technical Paper
470129
WALTHER PROKOSCH
1948-01-01
Technical Paper
480016
RALPH N. DuBOIS
1953-01-01
Technical Paper
530146
L. A. JOHNSON
Viewing 1 to 30 of 675

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