Improving the river crossing capability of an amphibious vehicle

Helvacioğlu, Şebnem; Helvacioğlu, İsmail Hakkı; Tuncer, Burak

doi:10.1016/j.oceaneng.2011.10.001

Cited by 39 publications

(10 citation statements)

References 2 publications

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“…Metodologi kajian disain Ranpur-AAPC Pada tinjauan kajian di sini difokuskan untuk menganalisa kinerja hidromekanika pada disain awal ranpur-AAPC amfibi beroda ban yang dikembangkan dari basis disain ranpur darat. Tinjauan teknis yang dilakukan meliputi aspek hidrostatikapada daya apung, stabilitas dan hidrodinamika, untuk tenaga gerak (powering) 8) . Tinjauan unjuk kerja hidromekanika pada disain ranpur ini dilakukan dengan cara mengevaluasi melalui prediksi perhitungan numerik parameterparameter aspek hidrostatika terutama daya apung.…”

Section: Metodologiunclassified

Tinjauan Unjuk Kerja Hidrodinamika Pada Pengembangan Awal Desain Ranpur Amphibi Beroda Ban

Samudro

2023

Majalah Ilmiah Pengkajian Industri

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AbstrakKendaraan tempur (ranpur) amfibi AAPC (Amphibious Armored Personal Carrier) adalah ranpur pengangkut personel militer serta dapat dimanfaatkan untuk penyeberangan pada perairan dangkal.Ranpur mampu beroperasi di darat/ air dan dapat dikembangkan untuk operasi amfibi pendaratan. Ranpur berbobot 10,5 ton mempunyai kapasitas 10 personil, berkecepatan di darat 110 km/jam dan dirancang berkecepatan 9 km/jam di air. Pada tulisan ini secara numerik unjuk kerja hidromekanika ranpur (amphibious mode) dikaji, terutama karakteristik hidrostatika, aspek daya apung, aspek stabilitas serta karakteristik hidrodinamika, aspek tenaga penggerak untuk menjamin kenyamanan maupun keselamatan operasional ranpur di air.Ranpur dirancang dengan displacement penuh, prediksi hidrostatika ranpur menunjukan sarat air/ ketenggelaman maksimum mencapai 1,5 m, disini ranpur tercelup hingga bukaan pintu masuk personil, namun ranpur masih mempunyai cadangan daya apung. Prediksi stabilitasranpur menunjukkan, pada kondisi titik berat disekitar 1,25 m dari garis dasar, meski miring ± 60 o , stabilitas ranpur masih dinilai optimum aman. Namun dengan bobot 10,5 ton, agar ranpur dapat melaju di air pada kecepatan 9 km/jam, diprediksi memerlukan tenaga penggerak ±1600 HP. Padahal tenaga penggerak ranpur terpasang hanya sebesar 215 HP, sehingga kecepatan operasi di air dinilai tidak dapat terpenuhi. Karenanya bobot, bentuk dan kecepatan ranpur perlu ditinjau kembali. Secara umum unjuk kerja hidromekanika pengembangan disain ranpur-AAPC amfibi cukup baik.

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Section: Metodologiunclassified

Tinjauan Unjuk Kerja Hidrodinamika Pada Pengembangan Awal Desain Ranpur Amphibi Beroda Ban

Samudro

2023

Majalah Ilmiah Pengkajian Industri

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“…Initial resistance and flow visualization simulation showed that the flow velocity entering into the under keel clearance space increased due to low water depth and passed the certain amount of flow under multi-purpose amphibious vehicle. So the hydrodynamic resistance increased due to boundary layer expansion on bottom in turbulent flow regime (Helvacioglu, et al 2011).…”

Section: Introductionmentioning

confidence: 98%

Numerical estimation of shallow water effect on multipurpose amphibious vehicle resistance

Nakisa

Maimun

Ahmed

et al. 2017

J. nav. arch. mar. engg.

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“…Moreover, the drag reduction percentage can reach 17% when Fr equals 0.3. Helvacioglu et al studied the cruising ability of HSAVs [11]. Ain et al analyzed the influence of an air cushion on the resistance of a Multi Amphibious Vehicle [9].…”

Section: Introductionmentioning

confidence: 99%

Influence of Flanks on Resistance Performance of High-Speed Amphibious Vehicle

Pan

Liu

2021

JMSE

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In order to reduce the additional resistance of high-speed amphibious vehicles, Flanks are designed on the concave grooves. As a new drag reduction attachment, the principle of Flanks is analyzed and discussed in detail. In this paper, the HSAV model and Flanks coupling resistance tests are performed based on the Reynolds-averaged Navier–Stokes method and SST k−ω model. The accuracy of the numerical approach is verified by a series of towing tests. Results show that with a fixed installation angle and invariable characteristic parameters, Flanks can significantly reduce the total resistance at high speed, with a maximum drag reduction of 16%. In the meantime, Flanks also affect the attitude and flow field of the vehicle, consequently affecting the resistance composition and the sailing condition. A vehicle model self-propulsion test is designed and carried out, and it qualitatively verifies the drag reduction effect of the Flanks at high speed.

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Improving the river crossing capability of an amphibious vehicle

Cited by 39 publications

References 2 publications

Tinjauan Unjuk Kerja Hidrodinamika Pada Pengembangan Awal Desain Ranpur Amphibi Beroda Ban

Tinjauan Unjuk Kerja Hidrodinamika Pada Pengembangan Awal Desain Ranpur Amphibi Beroda Ban

Numerical estimation of shallow water effect on multipurpose amphibious vehicle resistance

Influence of Flanks on Resistance Performance of High-Speed Amphibious Vehicle

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