Propeller Open-Water Test Method for Hybrid Contra Rotating Propeller
The Hybrid Contra Rotating Propeller is a developing propulsion system that combines a conventional single-shaft propeller with a POD propeller to achieve high energy-saving performance through a Contra Rotating Propeller. In this paper, a new towing tank test method for the Hybrid Contra Rotating P...
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| Language: | English |
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MDPI AG
2025-04-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/13/5/858 |
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| author | Tomoki Wakabayashi Tokihiro Katsui |
| author_facet | Tomoki Wakabayashi Tokihiro Katsui |
| author_sort | Tomoki Wakabayashi |
| collection | DOAJ |
| description | The Hybrid Contra Rotating Propeller is a developing propulsion system that combines a conventional single-shaft propeller with a POD propeller to achieve high energy-saving performance through a Contra Rotating Propeller. In this paper, a new towing tank test method for the Hybrid Contra Rotating Propeller was suggested. By conducting seven patterns of propeller open-water tests and measuring the individual propeller performance and the interaction between the propeller and the POD, the propeller’s mutual interaction can be obtained. Towing tank tests for a study ship were conducted, and the analyzed results are shown. There exists the effect of the wake of the propeller open boat at an unusual (reversed) test layout, which simulates the Hybrid Contra Rotating Propeller, and this effect must be removed for the accurate estimation of the ship’s performance. In conventional towing tank test methods, this effect on the front propeller was obtained and used to correct the performance of the total unit of the Hybrid Contra Rotating Propeller. The presented method allows for the correct removal of the open boat effect on the performance of each propeller and the propeller mutual interaction, resulting in more accurate power estimation. Furthermore, by using the individual performance of two propellers and interaction terms, the presented method enables us to conduct a power estimation at an arbitrary revolution rate of two propellers. |
| format | Article |
| id | doaj-art-e12a48d61b5c48f5a9fed055fd28edbf |
| institution | DOAJ |
| issn | 2077-1312 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj-art-e12a48d61b5c48f5a9fed055fd28edbf2025-08-20T03:14:36ZengMDPI AGJournal of Marine Science and Engineering2077-13122025-04-0113585810.3390/jmse13050858Propeller Open-Water Test Method for Hybrid Contra Rotating PropellerTomoki Wakabayashi0Tokihiro Katsui1Technical Research Center, Japan Marine United Corporation, Tsu 514-0398, JapanOcean-Bottom Exploration Center, Kobe University, Kobe 658-0022, JapanThe Hybrid Contra Rotating Propeller is a developing propulsion system that combines a conventional single-shaft propeller with a POD propeller to achieve high energy-saving performance through a Contra Rotating Propeller. In this paper, a new towing tank test method for the Hybrid Contra Rotating Propeller was suggested. By conducting seven patterns of propeller open-water tests and measuring the individual propeller performance and the interaction between the propeller and the POD, the propeller’s mutual interaction can be obtained. Towing tank tests for a study ship were conducted, and the analyzed results are shown. There exists the effect of the wake of the propeller open boat at an unusual (reversed) test layout, which simulates the Hybrid Contra Rotating Propeller, and this effect must be removed for the accurate estimation of the ship’s performance. In conventional towing tank test methods, this effect on the front propeller was obtained and used to correct the performance of the total unit of the Hybrid Contra Rotating Propeller. The presented method allows for the correct removal of the open boat effect on the performance of each propeller and the propeller mutual interaction, resulting in more accurate power estimation. Furthermore, by using the individual performance of two propellers and interaction terms, the presented method enables us to conduct a power estimation at an arbitrary revolution rate of two propellers.https://www.mdpi.com/2077-1312/13/5/858hybrid contra rotating propellerPODcontra rotating propellerenergy savingtowing tanktowing tank test method |
| spellingShingle | Tomoki Wakabayashi Tokihiro Katsui Propeller Open-Water Test Method for Hybrid Contra Rotating Propeller Journal of Marine Science and Engineering hybrid contra rotating propeller POD contra rotating propeller energy saving towing tank towing tank test method |
| title | Propeller Open-Water Test Method for Hybrid Contra Rotating Propeller |
| title_full | Propeller Open-Water Test Method for Hybrid Contra Rotating Propeller |
| title_fullStr | Propeller Open-Water Test Method for Hybrid Contra Rotating Propeller |
| title_full_unstemmed | Propeller Open-Water Test Method for Hybrid Contra Rotating Propeller |
| title_short | Propeller Open-Water Test Method for Hybrid Contra Rotating Propeller |
| title_sort | propeller open water test method for hybrid contra rotating propeller |
| topic | hybrid contra rotating propeller POD contra rotating propeller energy saving towing tank towing tank test method |
| url | https://www.mdpi.com/2077-1312/13/5/858 |
| work_keys_str_mv | AT tomokiwakabayashi propelleropenwatertestmethodforhybridcontrarotatingpropeller AT tokihirokatsui propelleropenwatertestmethodforhybridcontrarotatingpropeller |