Results 201 to 210 of about 416,763 (296)

Aerodynamic simulation and control analysis of an aircraft emergency tailplane system. [PDF]

Sci Rep
Yan D, Zhao Z, Ye L, Zhao G, Li F.
europepmc   +1 more source

Characteristics, properties and limitations of per‐ or polyfluoroalkyl substances (PFASs) and fluoropolymers

Polymer International, EarlyView.
An overview and categorization of man‐made per‐ or polyfluoroalkyl substances (PFASs) including low‐molar‐mass and high‐molar‐mass fluorochemicals, and their international regulations is presented. Though certain PFASs are toxic, bioaccumulative and cross the human cellular membranes, others, such as fluoropolymers, are safe, reliable and involved in ...
Bruno Améduri
wiley   +1 more source

Tolerance driven lightweight design and interface robustness of multi material aircraft horizontal tail structures. [PDF]

Sci Rep
Lin M, Wang B, Lin C.
europepmc   +1 more source

Anticlastic Curvature and Material Freedom

physica status solidi (b), EarlyView.
Anticlastic curvature occurs in bent bars for positive Poisson's ratio; synclastic curvature occurs for negative Poisson's ratio provided the material is homogeneous and elastic. Some planar negative Poisson's ratio materials exhibit anticlastic saddle curvature rather than convex curvature in bending due to effects of 3D structure.
Roderic Lakes
wiley   +1 more source

Research on the aerodynamic characteristics of eVTOL aircraft ducted rotor tip embedded inside the ducted body. [PDF]

Sci Rep
Du S, Zha Y, Li C, Lu Z, Zhao Q.
europepmc   +1 more source

Climatology of upper‐tropospheric turbulence: Capabilities and limitations of aircraft reports and ERA5 reanalysis diagnostics

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Based on turbulence diagnostics, airlines are willing to avoid up to 15% of the airspace in order to avoid a fraction of turbulence that takes up about 0.1% of the airspace. This study quantifies these three fractions using turbulence reports from commercial aircraft and ERA5 reanalysis diagnostics, revealing that the low and regionally variable ...
Thorsten Kaluza, Paul D. Williams, David M. Schultz, Timothy P. Banyard   +3 more
wiley   +1 more source

Cost-Effectiveness of Structural Health Monitoring in Aviation: A Literature Review. [PDF]

Sensors (Basel)
Ballarin P, Sala G, Airoldi A.
europepmc   +1 more source

Assessing wildfire dynamics during a megafire in Portugal using the MesoNH/ForeFire coupled model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Weather conditions affect megafires by inducing different fire behaviors over several days or weeks. The coupled MesoNH/ForeFire code was used to represent the dynamics of fire generating pyro‐convective clouds. To advance the understanding of wildfire dynamics, high‐resolution coupled fire–atmosphere modeling was employed.
Cátia Campos, Flavio Tiago Couto, Filippe L. M. Santos, Paulo Pinto, Carolina Purificação, Hugo Miguel Silva, João Rio, Manuel Lopes, Roberta Baggio, Jean‐Baptiste Filippi, Maria José Monteiro, Daniele Bortoli, Rui Salgado   +12 more
wiley   +1 more source

Harmonic adaptive fault-tolerant control for incipient and multiple faults of high mobility fighter. [PDF]

Sci Rep
Hu K, Wang Z, Wang J.
europepmc   +1 more source

Assimilation of European and global Mode‐S aircraft observations into the Met Office global deterministic numerical weather prediction model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
European and global Mode‐S aircraft reports have been assimilated into the Met Office global deterministic numerical weather prediction model, improving forecast accuracy for wind, temperature, and geopotential height. This is the first time global Mode‐S network data have been assimilated, which include data from under‐observed regions, and has ...
Elliott Warren, Warren Tennant, Edmund Stone, Joanne Waller, Christopher Thomas, Adam Maycock   +5 more
wiley   +1 more source