Determination of aerodynamic and hydrodynamic drag of selected pneumatic life rafts

• Autorzy: Jachowski Jacek , Książkiewicz Edyta

Identyfikatory

DOI

10.17402/671

• Języki publikacji: EN

Abstrakty

EN

The success of a search and rescue operation at sea depends on accurately determining the location and search area of a drifting pneumatic life raft, with particular emphasis on drift. This article examines the leeway of pneumatic life rafts and provides a summary of the available types used as life-saving appliances on ships. Based on experimental and numerical studies, the technical characteristics of the life rafts were compared, and the relationship between their shape and leeway components was analyzed. The research demonstrated the degree of dependence between the life raft’s shape and its aerodynamic and hydrodynamic drag. The results obtained are significant and will inform further numerical studies on leeway and search area estimation. The authors’ previous experimental and numerical work, as well as findings from earlier publications, form the basis for the calculations presented in this paper.

Słowa kluczowe

EN

pneumatic life rafts; leeway; aerodynamic drag; hydrodynamic drag; search and rescue operations; life rafts geometry

• Wydawca: Wydawnictwo Naukowe Politechniki Morskiej w Szczecinie
• Czasopismo: Zeszyty Naukowe Politechniki Morskiej w Szczecinie
• Rocznik: 2025
• Tom: nr 84 (156)
• Strony: 172--178
• Opis fizyczny: Bibliogr. 8 poz., rys., tab.

Twórcy

autor

Jachowski Jacek

• Gdynia Maritime University, Faculty of Navigation, Department of Ship Operation 81-87 Morska St., 81-225 Gdynia, Poland

• https://orcid.org/0000-0001-7282-6248

autor

Książkiewicz Edyta

• Gdynia Maritime University, Faculty of Navigation, Department of Ship Operation 81-87 Morska St., 81-225 Gdynia, Poland

• https://orcid.org/0000-0003-2185-8412

Bibliografia

• 1. Breivik Ø., Allen A., Maisondieu, Ch. & Olagnon, M. (2013) Advances in search and rescue at sea. Ocean Dynamics 63 (1), pp. 83–88, doi: 10.1007/s10236-012-0581-1.
• 2. Breivik Ø., Allen A.A., Maisondieu Ch. & Roth J.Ch. (2011) Wind-induced drift of objects at sea: The leeway field method. Applied Ocean Research 33 (2), pp. 100–109, doi: 10.1016/j.apor.2011.01.005.
• 3. Burciu Z. (2012) Reliability of SAR action in maritime transport (in Polish). Warsaw: Printing House of Warsaw University of Technology.
• 4. Burciu Z., Abramowicz-Gerigk T., Jachowski J., Kornacka E. & Wawrzusiszyn M. (2017) Experimental and numerical investigation of towing resistance of the innovative pneumatic life raft. Polish Maritime Research 24 (2), pp. 40– 47, doi: 10.1515/pomr-2017-0048.
• 5. Jachowski J. & Książkiewicz E. (2024) Numerical Prediction of Pneumatic Life Raft Performance. The International Journal on Marine Navigation and Safety of Sea Transportation 18 (1), pp. 229–232, doi: 10.12716/1001.18.01.24.
• 6. Jachowski J., Książkiewicz E. & Szwoch I. (2021) Determination of the aerodynamic drag of pneumatic life rafts as a factor for increasing the reliability of rescue operations. Polish Maritime Research 28 (3), pp. 128–136, doi: 10.2478/ pomr-2021-0040.
• 7. Technical report (2000) Aerodynamic testing of pneumatic life rafts in the wind tunnel Ø 5 m (in Polish). Report nr 168/ BA/2000/D Institute of Aviation, Warsaw.
• 8. Technical report (2015) Innowacyjne środki transportu w sytuacjach zagrożenia życia na morzu. CTO, Maritime Advanced Research Center, Gdańsk, Poland.