| 摘要 |
PCT No. PCT/FR89/00541 Sec. 371 Date Jun. 3, 1991 Sec. 102(e) Date Jun. 3, 1991 PCT Filed Jul. 18, 1990 PCT Pub. No. WO91/01633 PCT Pub. Date Feb. 21, 1991.A hydrodynamic trawl opening device is disclosed consisting of a structure (11) with at least two flexible superimposed wings (12, 13), joined together by a plurality of flexible dividing walls (14) which are transverse with respect to said wings. Fixing means (15a, 15b) are further provided for rigging it to the trawl, close to the opening, so that the wings are incident with respect to the flow direction and so that said dividing walls are oriented in the flow direction. Besides its excellent lift performances at normal trawling speeds, the device of the invention is very easy to rig and has negligible space requirement. |
