Results 11 to 20 of about 18,877,401 (260)

Numerical simulation of oblique water-exit process of trans-media aerial underwater vehicle

open access: yesZhongguo Jianchuan Yanjiu, 2019
[Objectives] The oblique water-exit process of a Trans-Media Aerial Underwater Vehicle (TMAUV)is highly non-linear,unsteady and drastic in flow field.
Tan Junyi   +4 more
doaj   +2 more sources

Lift–Drag Performance of a New Unmanned Aerial Vehicle in Different Media and Ground Effect

open access: yesJournal of Marine Science and Engineering
Water–air trans-media unmanned vehicle is a kind of aircraft, which can freely fly in the air, sail in the water and pass through free surface. For trans-media aircrafts, the development process from air–surface to air–underwater and from submarine ...
Wenhua Wang   +3 more
doaj   +2 more sources

Effect of Annealing on Microstructure and Capacitance Properties of Sol-gel TiO2 Film on Aluminum

open access: yesInternational Journal of Electrochemical Science, 2021
Sol-gel TiO2 film prepared by dip-coating on aluminum was annealed under different temperatures, and subsequently anodized in ammonium adipate solution.
Huifeng Kang   +5 more
doaj   +1 more source

Performance analysis of a rotating detonation model for future thermal power system using hydrogen as fuel

open access: yesEnergy Reports, 2022
The thermodynamic cycles of the detonation combustion could potentially deliver a performance increase of 20% beyond the conventional deflagration combustor such as gas turbines and ramjets, thus the detonative combustor is a prospective technology for ...
Mengmeng Zhao   +4 more
doaj   +1 more source

Disruption management of the vehicle routing problem with vehicle breakdown [PDF]

open access: yes, 2011
This paper introduces a new class of problem, the disrupted vehicle routing problem (VRP), which deals with the disruptions that occur at the execution stage of a VRP plan.
Eglese, R W, Mu, Q, Fu, Z, Lysgaard, J
core   +4 more sources

Trans Time: Safety, Privacy, and Content Warnings on a Transgender-Specific Social Media Site [PDF]

open access: yes, 2020
Trans people often use social media to connect with others, find and share resources, and post transition-related content. However, because most social media platforms are not built with trans people in mind and because online networks include people who
Haimson, Oliver L.   +5 more
core   +1 more source

Numerical Simulation on Near-water-surface Skipping Motion of Trans-media Vehicle

open access: yesJournal of Physics: Conference Series, 2023
Abstract When a trans-media vehicle impacts the water surface at a small angle, it will bounce and take off and then re-enter the water, which is called near-water-surface Skipping Motion. The study of this kind of movement is of great significance to the high maneuvering penetration of ships or aircraft near sea level.
Wenxuan Ma   +4 more
openaire   +1 more source

Aerodynamic Numerical Simulation Analysis of Water–Air Two-Phase Flow in Trans-Medium Aircraft

open access: yesDrones, 2022
A trans-medium aircraft is a new concept aircraft that can both dive in the water and fly in the air. In this paper, a new type of water–air multi-medium span vehicle is designed based on the water entry and exit structure model of a multi-rotor UAV ...
Jun Wei   +4 more
doaj   +1 more source

Research on Variable-Swept Hybrid Aerial Underwater Vehicle Plunge-Diving Control Based on Adaptive Dynamic Surface Control

open access: yesApplied Sciences, 2023
The variation in aerodynamic parameters during the process of a variable sweepback hybrid aerial underwater vehicle (HAUV) affects flight stability. During the air–water trans-media locomotion, there are medium mutations and solid–liquid gas coupling ...
Beibei Xing   +3 more
doaj   +1 more source

Study on high-speed water entry process of non-rotating vehicles

open access: yesXibei Gongye Daxue Xuebao, 2023
The non-rotating trans-media vehicle can better adapt to the hypersonic flight conditions, but new problems in the hydrodynamic characteristics and motion stability arise during the water entry process.
YANG Kaixin   +6 more
doaj   +1 more source

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