Results 51 to 60 of about 13,408 (229)

Study on Water Entry of a 3D Torpedo Based on the Improved Smoothed Particle Hydrodynamics Method

open access: yesApplied Sciences
The water entry of a torpedo is a complex nonlinear problem, involving transient impact, free surface deformation, droplet splashing, and fluid–structure coupling, which poses severe challenges to traditional mesh methods.
Xiaowei Cai   +5 more
doaj   +1 more source

Interior Trajectory Characteristics of Ram Piston Device in UUV for Torpedo Launching

open access: yes水下无人系统学报, 2023
For lightweight and small volume requirements of unmanned undersea vehicles (UUVs), a hydraulic cylinder-ram piston-grid tube launch device was presented in this paper.
Gongyi YANG   +4 more
doaj   +1 more source

Controlled Ghost Fishing: Effects of Soaking Times and Mesh Sizes on Catchability in Trammel Net Fisheries

open access: yesFisheries Management and Ecology, EarlyView.
ABSTRACT Trammel nets are used with extended soaking times to increase the catching efficiency for demersal fish in commercial fishing. Long soaking time causes deterioration or damage to species caught in the first days. Effects of soaking time were investigated with 36‐mm, 42‐mm, and 46‐mm mesh sizes soaked over 1, 3, 5, and 7 days on target, non ...
Yusuf Şen, Uğur Özekinci
wiley   +1 more source

Aid as Pacification: The Encroachment of Counterterrorism Clauses into the Aid Regime of the European Union in the Occupied Palestinian Territories

open access: yesJCMS: Journal of Common Market Studies, EarlyView.
Abstract The article engages the European Union's (EU) implementation of counterterrorism clauses as part of its development aid regulations in the Occupied Palestinian Territory (OPT). The point of departure for the research is the shift in the EU's policy for aid regulations in the OPT in 2019, when the EU began to gradually implement ...
Mariam Salameh‐Puvogel
wiley   +1 more source

Torpedo Hit Probability Prediction Method Based on Deep Neural Network

open access: yes水下无人系统学报, 2023
In order to further improve the prediction ability of torpedo hit probability, a torpedo hit probability prediction method based on deep neural network(DNN) was proposed.
Xuhui LI   +3 more
doaj   +1 more source

Speed‐dependent locomotor patterns during steady swimming in a demersal shark

open access: yesJournal of Fish Biology, EarlyView.
Abstract Swimming ability is critical for navigating complex benthic habitats, yet the biomechanical strategies demersal sharks employ to modulate body and fin movements across varying speeds remain largely unexplored. This study examines speed‐dependent kinematic patterns in the small‐spotted catshark (Scyliorhinus canicula), a benthic species with ...
Fidji Berio   +2 more
wiley   +1 more source

Method of Determination and Life Assessment for Life-Limited Parts of Torpedoes

open access: yes水下无人系统学报, 2023
In order to ensure the high availability and high success of torpedoes in war, it is urgent to carry out research on the division and life assessment of life-limited parts in maintenance support.
Canli CUI   +3 more
doaj   +1 more source

Apristurus iterum, a new shark discovered based on egg case morphology and sequence data obtained from a formalin‐fixed specimen

open access: yesJournal of Fish Biology, EarlyView.
Abstract Apristurus iterum, a new species of deepwater catshark, is described from northeastern Australia. The new species is diagnosed through examination of its unique egg case morphology based on a single whole gravid female specimen and 10 egg cases deposited in different Australian ichthyological collections.
William T. White   +2 more
wiley   +1 more source

Torpedo (Torpedo) marmorata Risso 1810

open access: yes, 2014
Published as part of Carneiro, Miguel, Martins, Rogélia, Landi, Monica & Costa, Filipe O., 2014, Updated checklist of marine fishes (Chordata: Craniata) from Portugal and the proposed extension of the Portuguese continental shelf, pp. 1-73 in European Journal of Taxonomy 73 on page 14, DOI: 10.5852/ejt.2014.73, http://zenodo.org/record ...
Carneiro, Miguel   +3 more
openaire   +3 more sources

Application of Bolt Vibration Isolation Structure in Torpedo Noise Control

open access: yes水下无人系统学报
To further investigate the role of vibration isolation structure in torpedo noise control, in this paper, a dynamic characteristic identification bench of vibration isolation materials based on a beam model was established, and the elastic modulus and ...
Hao CAO   +3 more
doaj   +1 more source

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