Results 1 to 10 of about 62,052 (226)

PROSPECTIVE STRUCTURE AND FUNCTIONING OF THE CENTER FOR UNMANNED AIRCRAFT SYSTEMS OF EMERCOM OF RUSSIA [PDF]

open access: yesАктуальные вопросы пожарной безопасности, 2021
The development of unmanned aircraft system, regardless of its purpose and structural affiliation, involves the concerted efforts of stakeholders (management, scientists and designers, specialists of test complexes, tutors, as well as theoretical and ...
Inessa N. Isavnina   +3 more
doaj   +1 more source

Numerical Simulation and PIV Experimental Investigation on Underwater Autorotating Rotor

open access: yesAerospace, 2022
In this work, the flow field of an autorotating rotor in a water tunnel with various pitches and shaft backward angles was investigated via particle image velocimetry (PIV).
Liang Li   +4 more
doaj   +1 more source

Analysis of aerodynamic and aeroacoustics of full scale landing gear

open access: yesXibei Gongye Daxue Xuebao, 2022
The aerodynamic noise of a landing gear is an important source of airframe noise. The analysis of its noise characteristics plays an important role in the design of a low-noise landing gear.
TIAN Siyuan   +5 more
doaj   +1 more source

Asynchronously finite‐time fault detection for switched systems with unstable modes and intermittent measurements

open access: yesIET Control Theory & Applications, 2023
This study proposes a novel fault detection (FD) filter design approach for switched systems with unstable modes and intermittent measurement; the FD filter design approach considers asynchronous switching and ensures finite‐time stability (FTS).
Cheng Haoyu   +5 more
doaj   +1 more source

ASSESSMENT OF AN UNMANNED AIRCRAFT SYSTEM’S AIRWORTHINESS FOR CERTIFICATION [PDF]

open access: yesScientific Journal of Silesian University of Technology. Series Transport, 2020
This article shows that there is a need to carry out the certification process of the system of Unmanned Aircraft Systems (UAS) as an element conditioning the safety of their operation.
Dominika DUDZIAK   +2 more
doaj   +1 more source

Evolutionary generative design of supercritical airfoils: an automated approach driven by small data

open access: yesComplex & Intelligent Systems, 2023
Supercritical airfoils are critical components in the design of commercial wide-body aircraft wings due to their ability to enhance aerodynamic performance in transonic flow regimes.
Kebin Sun   +6 more
doaj   +1 more source

Combined effect of carbon nanotubes distribution and orientation on functionally graded nanocomposite beams using finite element analysis

open access: yesMaterials Research Express, 2021
Structural tailoring can provide a promising performance for Functionally Graded (FG) components in engineering. Moreover, utilizing advanced Carbon Nanotube (CNT) as embedded reinforcement in nanocomposite structures, excellent mechanical properties can
A M El-Ashmawy, Yuanming Xu
doaj   +1 more source

Unmanned aerial vehicle bypass training system

open access: yesТехнічна інженерія, 2020
The problem of creating a system for simulating the flight of an unmanned aircraft or remotely piloted aircraft system between buildings is solved, which uses multi-mode flight control by dividing the trajectory of the unmanned aircraft into several ...
M.S. Graf
doaj   +1 more source

In-Flight Tests of Intruder Detection Vision System

open access: yesSensors, 2021
In the near future, the integration of manned and unmanned aerial vehicles into the common airspace will proceed. The changes taking place mean that the safety of light aircraft, ultralight aircraft and unmanned air vehicles (UAV) will become an ...
Paweł Rzucidło   +5 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

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