ELASTICALLY SUPPORTED THRUSTER STRUCTURE

摘要

PCT No. PCT/NO84/00006 Sec. 371 Date Aug. 28, 1984 Sec. 102(e) Date Aug. 28, 1984 PCT Filed Feb. 1, 1984 PCT Pub. No. WO84/03078 PCT Pub. Date Aug. 16, 1984.A propeller thruster installation includes a propeller unit rigidly supported in an inner tunnel tube which in its turn is elastically coaxially supported in an outer tunnel tube which is rigidly secured to the hull of a ship. In order to reduce the transmission of noise and vibrations from the propeller unit to the interior of, an ship the annulus between the outer and inner tunnel tubes is filled with elastic gas cushions, or a continuously maintained "bubble curtain" of air.