Results 21 to 30 of about 18,965 (247)

Contributions to Image Transmission in Icing Conditions on Unmanned Aerial Vehicles

open access: yesDrones, 2023
In terms of manned aircraft, pilots usually detect icing conditions by visual cues or by means of ice detector systems. If one of these cues is seen by the crew or systems detect icing conditions, they have to apply the evasive procedure as defined ...
José Enrique Rodríguez Marco   +4 more
doaj   +1 more source

Cloudphysical Parameters in Dependence on Height above Cloud Base in Different Clouds. [PDF]

open access: yes, 1989
On flights with the DLR icing research aircraft the dependence of aircraft icing on cloudphysical parameters was determined; both for aircraft-referred icing and for normalized icing, as well as for various clouds and locations in clouds.
Hoffmann, H.-E., Roth, A.
core   +1 more source

Optimization of a complex of technological equipment for aircraft processing [PDF]

open access: yesE3S Web of Conferences
When icing, aerodynamic surfaces of the aircraft, negative changes in the impact of the air flow on them occur, which leads to a noticeable drop in wing lift, a decrease in the efficiency of the rudders, a decrease in the aircraft and loss of control. In
Konovalov Anatoly   +2 more
doaj   +1 more source

A New Ice Accretion Model for Aircraft Icing Based on Phase-Field Method

open access: yesApplied Sciences, 2021
Aircraft icing presents a serious threat to the aerodynamic performance and safety of aircraft. The numerical simulation method for the accurate prediction of icing shape is an important method to evaluate icing hazards and develop aircraft icing ...
Hao Dai   +3 more
doaj   +1 more source

Decision-making for unmanned aerial vehicle operation in icing conditions [PDF]

open access: yes, 2016
With the increased use of unmanned aerial systems (UAS) for civil and commercial applications, there is a strong demand for new regulations and technology that will eventually permit for the integration of UAS in unsegregated airspace.
Armanini, S. F.   +4 more
core   +1 more source

Numerical Simulation of Ice Crystal Supercooled Droplet Mixed Phase Icing Based on the Improved Messinger Model

open access: yesInternational Journal of Aerospace Engineering, 2023
The ice crystal supercooled droplet mixed phase icing problem is an important research direction in aircraft icing and has received more attention in recent years.
Zhengzhi Wang   +4 more
doaj   +1 more source

Fabrication of an Anti-Icing Aluminum Alloy Surface by Combining Wet Etching and Laser Machining

open access: yesApplied Sciences, 2022
The phenomenon of icing on the surface of the fuselage while aircraft pass through clouds has an impact on flight safety. This aircraft icing may adversely affect metrological conditions and cause aerodynamic mechanical effects, resulting in a threat to ...
Annan Xia   +6 more
doaj   +1 more source

Analysis of Numerical Methods for Droplet Impingement Characteristics under Aircraft Icing Conditions

open access: yesAerospace, 2022
The investigation of super-cooled droplet impingement characteristics is the most important step for aircraft icing and anti-icing/de-icing analyses.
Xiaobin Shen   +4 more
doaj   +1 more source

Electrolyte effects on polyacrylic acid-polyvinylpyrrolidone aqueous glycol mixtures for use as de-icing fluids [PDF]

open access: yes, 2016
Rheological and wind tunnels measurements are presented for mixtures of polymers polyacrylic acid [PAA] and polyvinylpyrrolidone [PVP] polymers dispersed in water-1,2 propylene glycol mixture to examine their use as potential aircraft de-icing fluids ...
Hudson, Nicholas E.   +3 more
core   +4 more sources

Development of a small and transportable de-icing/anti-icing drone-mounted system. Part 1: System design

open access: yesDrone Systems and Applications, 2022
The icing of aircraft on the ground is an important flight safety issue. Aircraft must be de-iced and anti-iced to remove and protect the aircraft from freezing and frozen contamination, respectively, before and during takeoff.
Eric Villeneuve   +2 more
doaj   +1 more source

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