Results 51 to 60 of about 14,550 (304)

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Electrochemical Behavior of Flame‐Sprayed Sc‐Doped AlCoCrFeMo High‐Entropy Alloy Coatings in 3.5% Sodium Chloride Solution

Advanced Engineering Materials, EarlyView.
Scandium (Sc)‐doped AlCoCrFeMo HEA coatings are fabricated via flame spraying with 0.1, 0.3, and 0.5 wt% Sc additions. Among these, the HEA‐Sc0.3 coating exhibits the highest corrosion resistance, indicated by a more positive corrosion potential and lower current density.
Pankaj Kumar, Akash Vyas, Mohammad Aatif Qazi, Nashit Jalal, Maria Ophelia Jarligo, Mostafa Yakout, Jing Liu, André McDonald   +7 more
wiley   +1 more source

Utilizing Dynamic Scattering for Learning Radar Cross-Section of a Flapping-Wing Aircraft

Photonics, 2022
To study the radar cross-section (RCS) of a flapping-wing aircraft, a method of flapping-wing dynamic scattering is presented. The aircraft has two rigid wings and a fuselage similar to a bird’s body, where the plane shape of the wing is U-type.
Zeyang Zhou, Jun Huang
doaj   +1 more source

ENVISAT tropical validation of cloud and ozone parameters by high-altitude aircraft. [PDF]

, 2007
The validation of cloud top and ozone vertical column, measured by SCIAMACHY, were carried out respectively by lidars and in-situ and remote-sensing ozone instruments on-board the high altitude Geophysica aircraft.
Kostadinov, I., Gulde, T., MacKenzie, A. Robert, Ebersoldt, A., Blom, C., Lengel, A., Piesch, C., Ravegnani, F., Balestri, S., Liu, G. Y., Keim, C., Azzolini, R., Stefanutti, Leopoldo, Martinez, A. A., Petritoli, A.   +14 more
core  

Airborne Measurements of Gravity Wave Breaking at the Tropopause [PDF]

, 2003
2000 FLORIDA AVE NW, WASHINGTON, DC ...
Reinhold Busen, Jorg Hacker, James A. Whiteway, Pavelin, E, Edward G. Pavelin, Whiteway, J, Busen, R., Busen, R, Pavelin, E.G., Vosper, S, Whiteway, J.A., Hacker, Jorg Michael, Hacker, J., Vosper, S., Simon Vosper   +14 more
core   +1 more source

Experimental Characterization and Constitutive Modeling of the Effect of Prior Inelastic Strain on the Viscoplastic Behavior of AD730 at 700 °C

Advanced Engineering Materials, EarlyView.
This study shows that superalloys used in aircraft engine disks become much more prone to deformation at high temperatures if they have been strained during manufacturing. This effect increases with the level of prior strain but eventually reaches a limit.
Fabio Machado Alves da Fonseca, Patrick Villechaise, Malik Durand, Arnaud Longuet, Florent Coudon, Loïc Signor, Julien De Jaeger, Dominique Eyidi, Nathalie Bozzolo, Jonathan Cormier   +9 more
wiley   +1 more source

The wake vortex prediction and monitoring system WSVBS Part II: Performance and ATC integration at Frankfurt airport

, 2007
The performance and ATC integration of DLR’s wake vortex advisory system “WSVBS” (Wirbelschleppen-Vorhersage- und -Beobachtungssystem) for the dependent parallel runway system 25L and 25R at Frankfurt Airport are described.
Frech, Michael, Wiegele, Andreas, Kober, Kirstin, Gerling, Wilfried, Thomas Gerz, Alexander Scharnweber, Scharnweber, A., Frank Holzäpfel, Wilfried Gerling, Klaus Dengler, Gerz, Thomas, Scharnweber, Alexander, Kolber, Kirstin, Stephan Rahm, Kirstin Kober, Gerling, W., Rahm, Stephan, Kolber, K., Michael Frech, Holzäpfel, Frank, Dengler, Klaus   +20 more
core   +1 more source

Lidar Observations of Aircraft Exhaust Plumes

Journal of Atmospheric and Oceanic Technology, 2010
Abstract A series of field campaigns has been made at British airports using a rapid-scanning lidar and other instrumentation in order to measure the dispersion of exhaust plumes from commercial aircraft. The lidar operated at a wavelength of 355 nm and was thus effectively eye safe.
David Raper, Angus Graham, Simon Christie, Michael Bennett   +3 more
openaire   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Mean and Flux Horizontal Variability of Virtual Potential Temperature, Moisture, and Carbon Dioxide: Aircraft Observations and LES Study

, 2008
The effects of the horizontal variability of surface properties on the turbulent fluxes of virtual potential temperature, moisture, and carbon dioxide are investigated by combining aircraft observations with large-eddy simulations (LESs).
Górska, M., Heerwaarden, C.C., van, LeMone, M.A., Vilà-Guerau de Arellano, J.   +3 more
core   +1 more source