| 摘要 |
The invention relates to the construction of air-cushion craft with access ramps. A rigid hull of the craft consists of a pontoon and a superstructure with a cargo hold located in the middle part along its width. A nose of deck of pontoon smoothly decreases toward the side of nose. A cargo access ramp is installed in the inclined forward nose wall of superstructure. A flexible barrier with a peripheral flexible receiver is located along the outer contour of hull. The line of fastening the upper edge of flexible shell in the nose has smooth lift toward the side of nose and is located higher than the lower end of access ramp. The axis of rotation of the articulated coupling of access ramp intersects the line of fastening the upper edge of flexible shell to the rigid hull and on the boards has a rigid beam. The upper edge of flexible shell within the limits of opening in the nose wall is fastened to the external surface of access ramp, and between the opening in the nose wall and the points of intersection of the axis of rotation of access ramp with the line of fastening the upper edge of flexible shell to the hull it is fastened to the rigid beam. Along the boards of hull the flexible shell is fastened by upper edge to the lower edges of onboard walls. The flexible barrier in the nose of the hull has two internal flexible diaphragms located from both sides of the access ramp, fastened to the onboard end of access ramp, to the lower edge of corresponding rigid beam and to the onboard section of the nose wall of superstructure. A clearance between the nose end wall of pontoon in the nose wall of superstructure and the lower end of access ramp has a gasket. The internal flexible diaphragms and gasket prevent the outflow of air from the flexible barrier at opening the access ramp. This contributes to sufficient cooling of the operating engines at loading and unloading operations on the craft and to shortening the time of the operations because of the fact that the engines may not be stopped and re-started. |
