نتایج جستجو برای: amphibious vehicle

تعداد نتایج: 114898  

Journal: :Scientific American 1898

Journal: :The Journal of experimental biology 2016
Patricia A Wright Andy J Turko

Amphibious fishes spend part of their life in terrestrial habitats. The ability to tolerate life on land has evolved independently many times, with more than 200 extant species of amphibious fishes spanning 17 orders now reported. Many adaptations for life out of water have been described in the literature, and adaptive phenotypic plasticity may play an equally important role in promoting favou...

2002
E. Yücesan C.-H. Chen J. L. Snowdon

This paper presents the use of techniques for simulating product qualification as well as for product testing of electronic hardware to be used in the United States Marine Corp’s Advanced Amphibious Assault Vehicle. The goal of integrating “up-front” virtual life assessment into the development environment is to increase overall product reliability and decrease overall product cost by decreasin...

Journal: :Journal of Marine Science and Engineering 2021

The present study aims to reduce the pitch motion of an assault amphibious vehicle system in seaways by waterjet impeller revolution rate control. A series seakeeping tests were performed a towing tank with 1/4.5-scale model. This is manufactured as box-shaped hull, and since appendage that generates lift force attached, amount change large according forward speed. For reduction, resultant mome...

Journal: :The Journal of experimental biology 1970
M S Gordon W W Ng A Y Yip

The first paper of this series (Gordon et al. 1969) defined our usage of the phrase 'amphibious fishes', surveyed the literature on the physiology of terrestrial adaptations in those amphibious fishes lacking speciali2ed accessory respiratory organs, and presented data on aspects of related adaptations in the amphibious mudskipper fish, Periophthalmus sobrinus. The point was made in that paper ...

Journal: :Biology letters 2015
Daniel J Gibson Emma V A Sylvester Andy J Turko Glenn J Tattersall Patricia A Wright

Amphibious fishes often emerse (leave water) when faced with unfavourable water conditions. How amphibious fishes cope with the risks of rising water temperatures may depend, in part, on the plasticity of behavioural mechanisms such as emersion thresholds. We hypothesized that the emersion threshold is reversibly plastic and thus dependent on recent acclimation history rather than on conditions...

Journal: :Journal of Marine Science and Engineering 2023

A computational fluid dynamic (CFD) simulation is performed to evaluate the resistance performance of a self-propelled amphibious vessel with caterpillars be operated as marine debris collection at hard-to-reach areas. This study focuses on influence addition performance. To capture free surface model, volume (VOF) method was adopted, and express sinkage trim acting ship Dynamic Fluid-body Inte...

2011
Maria Candida Mourao Junhyuk Park Norhazwani Md Yunos

Tourism industries are rapidly increased for the last few years especially in Malaysia. In order to attract more tourists, Malaysian Governance encourages any effort to increase Malaysian tourism industry. One of the efforts in attracting more tourists in Malacca, Malaysia is a duck tour. Duck tour is an amphibious sightseeing tour that works in two types of engines, hence, it required a huge c...

2002
Ricky Valentin Jeremy Cunningham Michael Osterman Abhijit Dasgupta Michael G. Pecht Dinos Tsagos

This paper presents the use of techniques for simulating product qualification as well as for product testing of electronic hardware to be used in the United States Marine Corp’s Advanced Amphibious Assault Vehicle. The goal of integrating “up-front” virtual life assessment into the development environment is to increase overall product reliability and decrease overall product cost by decreasin...

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