A simplified method of calculating propeller parameters for small trawlers

Juhari Husin, . and Zainal Ashirin Shahardin, . A simplified method of calculating propeller parameters for small trawlers. pp. 67-78. ISSN 0126-6128

A simple method of calculation is being suggested to obtain a spectrum of propeller parameters such as diameter pitch-diameter ratio speed quasipropulsive coefficient and propeller performance coefficient for a given engine model. The best combination of parameters can be obtained in order to satisfy a specific trawling requirement. Usually the requirement is stated in the form of thrust of propeller to overcome total gear drag at a specific trawling speed. Total gear drag can be determined by a model test or mathematical modelling. Three engine models have been studied and for each model values of thrusts propeller performance coefficients and quasi propulsive coefficient were calculated. Having known the values of torque coefficient and advance coefficient the values of pitch-diameter ratios were obtained from propeller performance curve

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Abstract

A simple method of calculation is being suggested to obtain a spectrum of propeller parameters such as diameter pitch-diameter ratio speed quasipropulsive coefficient and propeller performance coefficient for a given engine model. The best combination of parameters can be obtained in order to satisfy a specific trawling requirement. Usually the requirement is stated in the form of thrust of propeller to overcome total gear drag at a specific trawling speed. Total gear drag can be determined by a model test or mathematical modelling. Three engine models have been studied and for each model values of thrusts propeller performance coefficients and quasi propulsive coefficient were calculated. Having known the values of torque coefficient and advance coefficient the values of pitch-diameter ratios were obtained from propeller performance curve

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Item Type:	Article
Additional Information:	5 tables; 15 ref. Summaries (En Malay)
AGROVOC Term:	BARCOS PARA PESCA A LA RASTRA
AGROVOC Term:	INGENIERIA MECANICA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:52
URI:	http://webagris.upm.edu.my/id/eprint/17459

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