Statistical evaluation of propriety of measurements of ship’s movement parameters

• Autorzy: Charchalis A. , Polanowski S.

Identyfikatory

DOI

10.5604/12314005.1213524

• Języki publikacji: EN

Abstrakty

EN

The paper presents some problems of carrying out measurements of energetic characteristics and vessel’s performance in the conditions of sea examinations. As the object of propulsion characteristic determination was selected the ship with fixed pitch propeller. In order to formulate models of power characteristics, in first, known physical aspect were taken and subsequently statistic theory was implemented. Models of propulsion performance were built basing on two theoretical methods of determination of required shaft power and torque at a hub, as the function of propeller’s revolutionary speed and sailing condition represented by dimensionless coefficients. Model number one, based on Silukov method presents function with variable power index, of shaft power in domain of revolutionary speed. The second one presents model of torque variations, based on Silovic – Fancev method. For verification of models were taken presented in available bibliography, results of researches of ship’s propulsion systems [6]. We also discuss the manner of reducing the results of measurements to the standard conditions. We present the way of preparing propulsion characteristics and the analysis of examination uncertainty for the measurement of torque. Statistical analysis of deviation of results, using three models, proposed in the paper. As a result of analysis, one point from primary data set was rejected due to its unreliability, what was resulting with higher adequacy of characteristics.

Słowa kluczowe

EN

diagnostics; vessel’s propulsion systems; ship propulsion characteristics for ships with fixed propeller modelling; determination of power characteristics

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2016
• Tom: Vol. 23, No. 1
• Strony: 83--89
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Charchalis A.

• Gdynia Maritime University, Faculty of Marine Engineering Morska Street 83, 81-225 Gdynia tel.: [phone], fax: [phone]

autor

Polanowski S.

• Gdynia Maritime University, Faculty of Marine Engineering Morska Street 83, 81-225 Gdynia tel.: [phone], fax: [phone]

Bibliografia

• [1] Bertram, V., Practical Ship Hydrodynamics, Oxford, UK 2000.
• [2] Carlton, J. S., Marine Propellers and Propulsion, Oxford, UK 2007.
• [3] Charchalis, A., Opory okrętów wojennych i pędniki okrętowe, Wyd. Akademii Marynarki Wojennej w Gdyni, 2001.
• [4] Charchalis, A., Conditions of drive and diagnostic measurements during sea test, Journal of KONES Powertrain and Transport, Vol.13, No. 4, 2007.
• [5] Charchalis, A., Conditions of carrying out and verification of diagnostic evaluation in a vessel, Solid State Phenomena.
• [6] Giernalczyk, M., Górski, Z., Siłownie okrętowe, Cz. I, Podstawy napędu i energetyki okrętowej, Akademia Morska w Gdyni, 2011.
• [7] Molland, A. F., The Maritime Engineering, Reference Book, Elsevier, 2008.
• [8] Pawletko, R., Polanowski, S., Modelowanie i wyznaczanie charakterystyk mocy układu napędowego statku wypornościowego ze śrubą o stałym skoku, Zeszyty Naukowe AMG, Nr 91, 2015.
• [9] Wojnowski, W. Okrętowe siłownie spalinowe, Cz. 1, AMW, Gdynia 1998.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.