Analysis of model-scale open-water test uncertainty

• Autorzy: Król Przemysław

Identyfikatory

DOI

10.2478/pomr-2022-0039

• Języki publikacji: EN

Abstrakty

EN

Within the frame of CTO’s standard procedure, a propeller open-water test is preceded by a reference measurement, which is taken for a reference propeller model (P356). The results of these measurements are assembled to conduct an open-water test uncertainty analysis. Additional material was gathered from open-water tests that were conducted throughout several research projects on the CP469 model, which is a model of the Nawigator XXI propeller. The latter is a controllable pitch propeller; its pitch was reset before each test repetition. Known procedures for the determination of the open-water test uncertainty do not allow one to extract the manufacture impact directly, without building many models. This factor was addressed with the use of lifting surface calculations. Under certain additional assumptions, these calculations were performed for 100 generic versions of each propeller’s geometry, which were generated by random deviations from the theoretical data within the limits of allowed tolerances. The results of the conducted analyses made it possible to extract separate factors, which were connected to the test’s repeatability, measurement bias and geometry tolerance.

Słowa kluczowe

EN

uncertainty; propeller open-water test; lifting surface method; model-scale experiment; propulsion

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2022
• Tom: nr 4
• Strony: 4--11
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

Król Przemysław

• Maritime Advanced Research Centre Poland

• https://orcid.org/0000-0001-8770-7882

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).