Results 211 to 220 of about 11,923 (261)

Early Auditory and Psychological Shifts in Newly Enlisted Republic of Korea Air Force Soldiers Exposed to Aircraft Noise: A Pilot Prospective Study. [PDF]

Noise Health
Park K, Lee S, Kim HC, Cho HH.
europepmc   +1 more source

Comparison of Aircraft-Derived Observations With in Situ Research Aircraft Measurements [PDF]

Quarterly Journal of the Royal Meteorological Society, 2016
Mode Selective Enhanced Surveillance (Mode-S EHS) reports are aircraft-based observations that have value in numerical weather prediction (NWP). These reports contain the aircraft's state vector in terms of its speed, direction, altitude and Mach number.
Andrew K Mírzá, Gabriel G Rooney, Sarah Dance   +2 more
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Analysis of observed aircraft-to-aircraft separations

2008 Integrated Communications, Navigation and Surveillance Conference, 2008
As air traffic demand continues to increase in the coming years, the need for concepts, procedures and tools that can improve airspace efficiency will likewise increase. Reduction of terminal and en-route separation minima has been the focus of many of the concepts and emerging technologies developed to respond to this need.
Stephen Szurgyi, Sanjiv Shresta, Dejan Neskovic, James DeArmon, Scott Williams   +4 more
openaire   +1 more source

Melting layer observations with radar and aircraft

Proceedings of IGARSS '94 - 1994 IEEE International Geoscience and Remote Sensing Symposium, 2002
Multiparameter radar measurements with the DLR polarimetric radar are combined with a vertical looking Doppler radar to study the melting of snow. The interpretation of the microphysical processes during melting by radar measurements is supported by in situ observations of the melting particles. >
Hagen, M. (Vortragender), Hubbert, J. (1), Richter, C. (2), Bringi, V.N. (1), Meischner, P.   +4 more
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Some Observations on the Mechanism of Aircraft Wing Rock

Journal of Aircraft, 1978
A pressure scale model of Northrop F-5A was tested in NASA Ames Research Center Eleven-Foot Transonic Tunnel to simulate the wing rock oscillations in a transonic maneuver. For this purpose, a flexible model support device was designed and fabricated which allowed the model to oscillate in roll at the scaled wing rock frequency. Two tunnel entries were
C. HWANG, W. PI
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OBSERVER-BASED CONTROL OF A PVTOL AIRCRAFT

IFAC Proceedings Volumes, 2005
Abstract In this paper, we propose an observed-based control for the PVTOL aircraft considering that the angular position is not measurable. The control strategy presented here, is robust with respect to observer errors and takes into account constraints imposed by the nonlinear observer.
Anand Sánchez, Isabelle Fantoni, Rogelio Lozano, Jesús De León Morales   +3 more
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Aircraft observations near jet streams

Quarterly Journal of the Royal Meteorological Society, 1963
AbstractThe results of an analysis of 22 flights through jet streams by aircraft of the Meteorological Research Flight are presented. The average distributions of wind speed, vertical and horizontal wind shear, potential temperature, water vapour, cirrus cloud and ozone are obtained in relation to the jet core, and are discussed in relation to existing
J. Briggs, W. T. Roach
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