Results 121 to 130 of about 2,103,194 (320)

Modeling of aircraft jet noise in airports

MATEC Web of Conferences, 2018
A mathematical model with 4 degree of freedom created in Matlab for aircraft final landing trajectory is described in this paper. A midsize commercial passenger aircraft similar to an Airbus A320 has been chosen as a reference aircraft. The parameters of
Georgieva Hristina, Georgiev Krasin
doaj   +1 more source

Aircraft noise propagation [PDF]

Sound diffraction experiments conducted at NASA Langley Research Center to study the acoustical implications of the engine over wing configuration (noise-shielding by wing) and to provide a data base for assessing various theoretical approaches to the ...
Hadden, W. J., Pierce, A. D.
core   +1 more source

Optimised Sound Absorbing Trim Panels for the Reduction of Aircraft Cabin Noise [PDF]

, 2004
The EU project FACE (Friendly Aircraft Cabin Environment) aims to improve the environmental comfort in aircraft cabins. As part of this project, this paper focuses on the reduction of noise in aircraft cabins.
Boer, A. de, Hannink, M.H.C., Wijnant, Y.H.   +2 more
core   +1 more source

Airport noise predicts song timing of European birds [PDF]

, 2016
Anthropogenic noise is of increasing concern to biologists and medical scientists. Its detrimental effects on human health have been well studied, with the high noise levels from air traffic being of particular concern.
Arroyo-Solís, Barber, Brumm, Brumm, Brumm, Brumm, Brumm, Burger, Catchpole, Dominoni, Dominoni, Dominoni, Dominoni, Dominoni, Dooling, Dorado-Correa, Francis, Fuller, Gil, Gil, Halfwerk, Kempenaers, Kight, Kight, Krebs, Kyba, Lampe, McGregor, McNamara, Nemeth, Nordt, Poesel, Riebel, Silva, Simpson, Slater, Sun, Swaddle, Thomas, Ware, Yang   +40 more
core   +2 more sources

All‐sky assimilation impacts of the Tomorrow.io microwave sounder constellation on global weather forecasts

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Key Findings: An assimilation methodology is established for the Tomorrow.io microwave sounder (TMS) flying on CubeSats in sun‐synchronous and inclined orbits, and in all cloud scenes. The TMS has a significant impact on weather forecast lead times up to 3 days in the Tropics in a research‐quality numerical weather prediction setting, and yields water ...
Jonathan J. Guerrette, Ryan Honeyager, Stephen Joseph Munchak, Xiaoxu Tian   +3 more
wiley   +1 more source

Predicted airframe noise levels [PDF]

Calculated values of airframe noise levels corresponding to FAA noise certification conditions for six aircraft are presented. The aircraft are: DC-9-30; Boeing 727-200; A300-B2 Airbus; Lockheed L-1011; DC-10-10; and Boeing 747-200B.
Raney, J. P.
core   +1 more source

Is aircraft noise exposure associated with cardiovascular disease and hypertension? Results from a cohort study in Athens, Greece

Occupational and Environmental Medicine, 2017
Background We followed up, in 2013, the subjects who lived near the Athens International Airport and had participated in the cross-sectional multicountry HYENA study in 2004–2006.
K. Dimakopoulou, Konstantinos Koutentakis, Ifigeneia Papageorgiou, Maria-Iosifina Kasdagli, A. Haralabidis, P. Sourtzi, E. Samoli, D. Houthuijs, W. Swart, A. Hansell, K. Katsouyanni   +10 more
semanticscholar   +1 more source

Operational all‐sky assimilation of geostationary infrared water‐vapour channels in the regional ICON‐D2 model with an ensemble Kalman filter

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Though many studies have shown potential benefit in assimilating all‐sky infrared radiances from geostationary satellites, at numerical weather prediction centres it is still common practice to assimilate clear‐sky radiances. We present the operationalization of the all‐sky assimilation of the spinning enhanced visible and infrared imager (SEVIRI ...
Annika Schomburg, Christoph Schraff, Christina Köpken‐Watts, Klaus Stephan, Liselotte Schühl, Robin Faulwetter   +5 more
wiley   +1 more source

Aircraft noise synthesis system: Version 4 user instructions [PDF]

A modified version of the Aircraft Noise Synthesis System with improved directivity and tonal content modeling has been developed. The synthesis system is used to provide test stimuli for studies of community annoyance to aircraft flyover noise.
Grandle, Robert E., Mccurdy, David A., Sullivan, Brenda M.   +2 more
core   +1 more source

Quantum Iterative Methods for Solving Differential Equations with Application to Computational Fluid Dynamics

Advanced Quantum Technologies, EarlyView.
Quantum algorithms for differential equations are developed with applications in computational fluid dynamics. The methods follow an iterative simulation framework, implementing Jacobi and Gauss–Seidel schemes on quantum registers through linear combinations of unitaries.
Chelsea A. Williams, Antonio A. Gentile, Vincent E. Elfving, Daniel Berger, Oleksandr Kyriienko   +4 more
wiley   +1 more source