Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 1; Volume 7, Part 1American Society of Mechanical Engineers, 1988 - Arctic regions |
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Page 447
... array is discussed and some possible applications are suggested . INTRODUCTION Conventional acoustic arrays consist ... array elements is required if the beam width is to be made narrow . Take , for example , a line array of hydrophones ...
... array is discussed and some possible applications are suggested . INTRODUCTION Conventional acoustic arrays consist ... array elements is required if the beam width is to be made narrow . Take , for example , a line array of hydrophones ...
Page 448
... ARRAY and an Consider a simple disc arrangement acoustic wave incident upon the disc from direction Y = 0 ( Fig . 3 ) . The output of hydrophone 2 will lag that of hydrophone 1 by delay where 2rsin ( t ) / V = a time varying function V ...
... ARRAY and an Consider a simple disc arrangement acoustic wave incident upon the disc from direction Y = 0 ( Fig . 3 ) . The output of hydrophone 2 will lag that of hydrophone 1 by delay where 2rsin ( t ) / V = a time varying function V ...
Page 451
... Array of Hydrophones P Px1 × 2 ( 0 ) [ H , H2 dsin ( 0 ) FI92 : Two Hydrophone Array 0 1.0 d 0.125 0.85 10.25 0.47 10.375 0.025 0.5 -0.30 0.625 -0.40 0.750 -0.26 0.875 -0.00 1.0 0.22 1.125 0.30 1.25 0.20 1.375 0.00 1.50 -0.18 1.625 ...
... Array of Hydrophones P Px1 × 2 ( 0 ) [ H , H2 dsin ( 0 ) FI92 : Two Hydrophone Array 0 1.0 d 0.125 0.85 10.25 0.47 10.375 0.025 0.5 -0.30 0.625 -0.40 0.750 -0.26 0.875 -0.00 1.0 0.22 1.125 0.30 1.25 0.20 1.375 0.00 1.50 -0.18 1.625 ...
Contents
FLOATING PRODUCTION SYSTEMS | 1 |
OFFSHORE MECHANICS | 23 |
Early Production Systems in the North | 31 |
Copyright | |
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adsorber amplitude analysis angle Arctic Engineering axial bending buoyancy cable calculated coefficient compliant tower components Conference on Offshore curve damage diameter displacement drag coefficient drilling dynamic effect equation equipment fatigue finite element flexible floating production flow function horizontal hydrodynamic installation jacket kips length linear liquid limit load marine mass matrix maximum measured Mechanics and Arctic method mode mode shapes model tests modulus mooring line mooring system motion natural frequency nonlinear obtained Offshore Mechanics Offshore Technology Conference operation parameters performance pile pipe pipe materials pipeline platform pressure production riser random wave ratio response rope rotation RPIT shear shear modulus shear strength shown in Figure simulation soil static stiffness strength stress structure subsea surface syntactic foam tendon turbine uranium vane velocity vertical vessel water depth wave forces wave height wave power weight wellhead wire