[PSUBS-MAILIST] Nonlinear Analysis of Coupled Roll/Sway/Yaw Stability Characteristics of Submersible Vehicles

[irox <irox@ix.netcom.com>]

Hi,

I saw this on Amazon for $30, but you can down load the pdf of this
for free.  Click on the "http://handle.dtic.mil/100.2/ADA331440";
link on this webpage:
http://stinet.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA331440

If you are mathematically challenged, this probably isn't a paper
you will enjoy.

Cheers,
  Ian.
--

Title :   Nonlinear Analysis of Coupled Roll/Sway/Yaw Stability Characteristics of Submersible Vehicles

Abstract : The problem of coupled roll, sway, and yaw stability analysis of submersible vehicles is analyzed, with particular emphasis on nonlinear studies. Previous results had indicated that a primary loss of stability is through the development of limit cycles. This loss of stability is due to the coupling of roll into sway and yaw and cannot be predicted by considering the uncoupled dynamics. In this study, it is shown that the mechanism of loss of stability is through bifurcations to periodic solutions. These are characterized as either subcritical or supercritical, depending on the sign of a certain nonlinear coefficient. Implications of these results to vehicle performance and operations are discussed.

Descriptors :   *SHIP MOTION, *DIFFERENTIAL EQUATIONS, *HYDRODYNAMICS, *SUBMERSIBLES, COMPUTER PROGRAMS, COMPUTERIZED SIMULATION, ROLL, PITCH(MOTION), YAW, EQUATIONS OF MOTION, HYDRODYNAMIC CHARACTERISTICS, THESES, BIFURCATION(MATHEMATICS).

Subject Categories : SUBMARINE ENGINEERING
      MECHANICS

http://stinet.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA331440
http://handle.dtic.mil/100.2/ADA331440




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