Abstract

The submersible high speed craft (SHSC) is a new kind of high performance craft featured by its ability to switch quickly among several navigation modes including submerged, semi-submerged and surface planing modes. The transition between different modes is achieved by changing the vertical and longitudinal components of hydrodynamic forces and moment acting on the craft through two pairs of wings and novel ballast channels. Critical conditions on residual buoyancy and wing angles for hydrodynamic diving and surfacing are established. Numerical calculations indicate that there exist turning points of hydrodynamic behaviors of SHSC in semi-submerge mode. Sample analysis shows that SHSC with residual buoyancy of -1% ~ 9.8% ΔSub is feasible to perform hydrodynamic diving and surfacing in condition of FB = 0.540.

Keywords:
calculation, attack angle, tail wing, hydrodynamic performance, shsc, mode transition, high speed craft cong huo, rotation angle, hydrodynamic force, vertical plane
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2014. International Society of Offshore and Polar Engineers
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