A Study on the Propeller Blade Singing Place of an 86,000 Ton Deadweight Crude Oil Tanker
A study was conducted to investigate the propeller singing place of an 86, 000 ton Deadweight Crude Oil Tanker. In preliminary study, proper use of finite element analysis was verified by comparing with the result of hammering test in the air. Then the finite element analysis was carried out for the blade in the water and compared with the noise measurement during sea trial, which enabled to confirm the local resonances of blade structure. Result of the study showed that the singing occurred most probably at trailing edges on the blade tip over 95% of propeller diameter. Owing to edge cutting of a successfoul remdial action, the singing excitation forces seemed to be reduced whereas the vibration characteristics of the blade was not changed.
This paper presents a novel p tubular linear generator (PMTLG) buoy sy convert the linear motion of the ocean wav energy. The design incorporates no working water airgap bearing surface integration betw components. The internal generator design w addition to the system integration with the bu the linear test bed performance results.