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Proceedings Papers

Paper presented at the SNAME 14th Propeller and Shafting Symposium, September 15–16, 2015
Paper Number: SNAME-PSS-2015-001
... carefully that the hydrodynamic loads can be measured reliably and accurately to a high frequency with high resolution. Attention has been paid to various operational conditions, covering ideal sailing ahead, DP & BP, SOLAS, thrusters-thruster interactions, and to those very extreme conditions e.g...
Proceedings Papers

Paper presented at the SNAME 13th Propeller and Shafting Symposium, September 11–12, 2012
Paper Number: SNAME-PSS-2012-006
... features of 3-D cloud cavitation. enhanced recovery circulation coefficient cavitation upstream oil & gas tlv cavitating flow reservoir simulation vorticity cavitation number rectangular hydrofoil vortex gap cavitation cavitating response gap flow frequency mesh harwood influence...
Proceedings Papers

Paper presented at the SNAME 11th Propeller and Shafting Symposium, September 12–13, 2006
Paper Number: SNAME-PSS-2006-07
... Warfare Center, Carderock Division (NSWCCD). marine transportation prediction nswccd kinna element method marine engineer cavitation naval architect propeller artificial intelligence propeller blade proceedings propeller 5479 lin frequency blade deformation abaqus hydroelastic...
Proceedings Papers

Paper presented at the SNAME 11th Propeller and Shafting Symposium, September 12–13, 2006
Paper Number: SNAME-PSS-2006-11
... characteristic propeller model frequency thickness chordwise direction side beveled edge method side beveled edge Anti-singing Edge Effect on Propeller Open Characteristics Nobuhiro Hasuike and Shosaburo Yamasaki, Nakashima Propeller Co., LTD. ABSTRACT Generally, propeller is applied with anti-singing...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-17
... Torsional vibration analysis is a cheap, fast and efficient tool when it comes to evaluating the performance and safety of a propulsion plant. The present paper introduces the basic mathematical concepts of three different approaches to torsional vibration analysis: natural frequency analysis...
Proceedings Papers

Paper presented at the SNAME 9th Propeller and Shafting Symposium, September 20–21, 2000
Paper Number: SNAME-PSS-2000-19
... several manufacturers were requested to famish any relevant data and their recommendations. A draft of this standard was distributed widely to industry and government to get comments and suggestions. This report explains the rationale behind the proposed criteria. frequency displacement excitation...
Proceedings Papers

Paper presented at the SNAME 8th Propeller and Shafting Symposium, September 23–24, 1997
Paper Number: SNAME-PSS-1997-25
... of the drive train, the steady torque that acts across the element, and the frequency of vibration. For example, this is a useful feature in representing the dynamic stiffness and damping capacity of flexible couplings or propeller damping. This feature is activated by using the mouse to click on the "add...
Proceedings Papers

Paper presented at the SNAME 7th Propeller and Shafting Symposium, September 20–21, 1994
Paper Number: SNAME-PSS-1994-005
... for the profession. marine transportation calculation natural frequency amplitude bearing critical speed ship computer program deflection propeller equation sinh excitation procedure stiffness vibration frequency information prediction shaft cosh THE SOCIETY OF NAVAL ARCHITECTS...
Proceedings Papers

Paper presented at the SNAME 7th Propeller and Shafting Symposium, September 20–21, 1994
Paper Number: SNAME-PSS-1994-019
... A general purpose finite element code is applied to estimate the stress, deflection, and fundamental natural frequency of a number of propellers with various loading distributions. Correlation with measured data is achieved with plate and brick elements and with quadrilateral and triangular...
Proceedings Papers

Paper presented at the SNAME 6th Propeller and Shafting Symposium, September 17–18, 1991
Paper Number: SNAME-PSS-1991-18
... systems was well within specifications. To determine the cause of this problem, an underway hull vibration survey was conducted, together with dockside impact tests and a 11spuddrop11 test. The cause of the problem was traced to the coincidence of the four-bladed propeller exciting frequency with the hull...
Proceedings Papers

Paper presented at the SNAME Propellers '88 Symposium, September 20–21, 1988
Paper Number: SNAME-PSS-1988-04
... a conventional propeller with no loss in propulsion efficiency. Therefore, the main goal of the experimental programme was to determine the acoustic source strength and frequency spectrum of the fluctuating volume of propeller cavitation. In addition, vibration levels in the stern of the vessel and sound...
Proceedings Papers

Paper presented at the SNAME Propellers '88 Symposium, September 20–21, 1988
Paper Number: SNAME-PSS-1988-12
... consumption roughness propeller roughness discovery propeller rubert gouge surface roughness program roug hness beach united kingdom government ship polishing propeller maintenance rubert gauge frequency THE SOCIET6Y01OPPFaapeNVvriorAtgoninVbiiaeAaBpLreAeasAcvehneR.tenV,Cd,ugaHietntiI...
Proceedings Papers

Paper presented at the SNAME Propellers '84 Symposium, May 15–16, 1984
Paper Number: SNAME-PSS-1984-10
.... Dynamic analysis results include: natural modes and frequencies of vibration and time history response. The problem of voluminous input data for the finite element method is bypassed, by using an automatic propeller- hub data generation method. Special features of the data generation method are its...
Proceedings Papers

Paper presented at the SNAME Propellers '81 Symposium, May 26–27, 1981
Paper Number: SNAME-PSS-1981-010
...., introduce severe fluctuations in the source strength of propeller cavitation. freight & logistics services cavity ship vibration sea saint cavitation vibration measurement berge vanga accuracy marine transportation propeller cavitation fluctuation variation frequency propeller...
Proceedings Papers

Paper presented at the SNAME Propellers '81 Symposium, May 26–27, 1981
Paper Number: SNAME-PSS-1981-013
... ones. This wake distribution was compared with the nominal one. calculation extrapolation world trade center suite 1369 particle propeller determination frequency ship naval architect plane accuracy dimension procedure din front separation propeller plane THE SOCIETY OF NAVAL...
Proceedings Papers

Paper presented at the SNAME Propellers '81 Symposium, May 26–27, 1981
Paper Number: SNAME-PSS-1981-015
... vibrations and sixteen for coupled transverse vibrations. A brief description will first be given of the origin of these coefficients for a propeller vibrating in an unbounded fluid at a prescribed frequency. The paper will then show how the M.I.T. unsteady lifting surface theory computer program...
Proceedings Papers

Paper presented at the SNAME Propellers '81 Symposium, May 26–27, 1981
Paper Number: SNAME-PSS-1981-005
... are presented, self-propulsion, cavitation and pressure pulse measurements. Comparative measurements were performed with a convential and a so called highly skewed c.p. propeller model. Calculations of natural frequencies and modes and forced vibrations caused by propeller pressure pulses are presented...
Proceedings Papers

Paper presented at the SNAME Propellers '81 Symposium, May 26–27, 1981
Paper Number: SNAME-PSS-1981-012
... reduction thrust approximation expression amplitude midchord skew frequency variation evaluation null representation skew unsteady thrust polynomial restriction application ~' THE SOCIETY"OF NAVAL ARCHITECTS AND MARINE ENGINEERS One World Trade Center, Suite 1369, New York, N.Y. 10048...
Proceedings Papers

Paper presented at the SNAME Propellers '81 Symposium, May 26–27, 1981
Paper Number: SNAME-PSS-1981-017
... of the cavity on each propeller blade. The cavitation volume can be calculated as function of the propeller geometry, propeller rpm and wake field. Provided the cavitation volume can be considered as being a monopole source the resulting source strength can be calculated as function of frequency. Based...
Proceedings Papers

Paper presented at the SNAME Propellers '81 Symposium, May 26–27, 1981
Paper Number: SNAME-PSS-1981-016
... mass and damping of a Vibrating propeller. This program incorporates approximate lifting surface corrections. Results are presented to show the effects of advance coefficient, vibration frequency, blade number, and skew on propeller added mass and damping. Preliminary design equations are presented...

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