Thruster apparatus and method for reducing fluid-induced...

Details Thruster apparatus and method for reducing fluid-induced... Thruster apparatus and method for reducing fluid-induced...

2005-05-03

2005-05-03

Basinger, Sherman (Department: 3617)

Ships

Mooring device

C405S211000

Reexamination Certificate

active

06886487

ABSTRACT:
Thrusters in communication with a feedback control system are provided on a cylindrical offshore marine member, such as a spar, for reducing and/or controlling vortex-induced-vibrations, low-frequency drift oscillations due to random waves, and low-frequency wind induced resonant oscillations. The thrusters are provided thrust instruction from the feedback control system based on marine member displacement and current velocity.

REFERENCES:
patent: 3327668 (1967-06-01), Von Schultz
patent: 3508512 (1970-04-01), Desrayaud et al.
patent: 3844242 (1974-10-01), Sernatinger et al.
patent: 3965840 (1976-06-01), Blumberg
patent: 4089287 (1978-05-01), Kranert et al.
patent: 6148751 (2000-11-01), Brown et al.

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