SU975490A1 - High-speed vessel - Google Patents

Description

(54) FAST SHIP

one

FIELD OF THE INVENTION The invention relates to shipbuilding and relates to the design of high-speed sliding vessels with retractable spoilers.

A high-speed vessel is known, comprising a hull with an onboard lining and a keeled bottom, which has transverse slit-shaped grooves separated by a keel section of the bottom and fenced from above with a fenced upper partition, under which are placed hinged plate interceptors with mechanisms for extending them from these transverse slit-shaped slots which are communicated with the air intakes for aeration of the bottom of the hull, while the enclosure is located throughout its width, and the side plating is connected to the keel bottom along line cheekbones 1.

However, such a vessel must have a blower power plant for aeration of the bottom of the interceptors, which leads to the high costs of ensuring efficient operation of the interceptors.

The purpose of the invention is the elimination of energy costs to ensure the effective operation of the interceptors.

The goal is achieved by the fact that, in a high-speed vessel, each of the air intakes is made in the form of slots in the onboard lining between the upper overlap of the flank and the cheekbone line, the total area of these air intakes is 0.20-0.25 projected area of the extended interceptors on the plane the frame, the area of the gaps between the rear surfaces of the interceptors and the rear edges of the transverse slit slots is 1.0-1.2 of the total area of the slots of the air intakes, and the front surfaces of the interceptors are conjugated with the front transverse edges of the slot-like grooves.

FIG. 1 schematically shows a high-speed vessel, side view; in fig. 2 - the same view from the bottom; in fig. 3 shows section A-A in FIG. 2; in fig. 4 shows a section BB in FIG. 3

Claims (2)

In the keeled bottom 1 of the vessel, there are slit-shaped grooves a in which the plate-shaped interceptors 2 are located, connected by hinges 3 and levers 4 to the body and hinges 5 from control thrust 6. Levers 4 with thrust 6 and hinges 3 and 5 form a mechanism extension of spoilers 2. They, together with hinges 3 and 5 and levers 4, are enclosed in enclosure 7, between the upper overlap of which 8 and the cheekbone line 9 in the side plating 10 are slotted 6 air intakes for bottom aeration 1. Enclosure 7 crosses the hull across the entire width. The slits b are protected from closure by the flaps 11. The total area of the slits b is 0.20-0.25 of the projected area of the extended interceptors 2 onto the clamping plane. The front surfaces 12 of the spoilers 2 are arranged to slide along the front edges of the 13 grooves a. The area of the gaps in between the rear surfaces 14 of the interceptors 2 and the rear edges of the 15th slots ata is 1.0-1.2 of the total area of the slots b. The device works as follows. When standing or moving at low speed and with interceptors 2 retracted inside the enclosure 7, enclosure 7 is filled with water. As the travel speed increases, the interceptors 2 extend behind them and a tear-off zone is formed. The vacuum generated in the tear-off zone causes suction of the water in the enclosure 7 into the external flow through the gaps in between the rear surfaces 14 of the spoilers 2 and the rear edges 15 of the slots a. Air begins to enter the enclosure 7 through the slots b, which then passes through the gaps between the rear surfaces 14 of the interceptors 2 and the rear edges 15 of the slots and is sucked into the separation zone. In this case, the separation zone behind the interceptors 2 increases significantly in length and stabilizes. The grooves a are separated from each other by the keel section 16 of the bottom 1. The casing 10 between the overlap 8 of the baffle 7 and the cheekbone line 9 of the cuts b provides a guaranteed air intake, because with developed gliding, the ship’s 10 above the cheekbones 9 are not flushed and the flow around the hull the vessel is firmly fixed on the cheekbones. The area of the slots b is 0.20-0.25 of the projected area of the extended interceptors 2 on the plane of the frame, chosen experimentally and is optimal. When the spoilers 2 are removed from the hull transom by 0.6-0.7 ship lengths, the proposed slots b areas ensure that air enters the separation zone in an amount necessary to maintain the separation zone length close to the maximum possible. The tearing zone closes near the aft end ship hull. With smaller values of the area of the slots, the flow of air into the separation zone will decrease, its length will be reduced, and the positive effect of using interceptors 2 as a means of reducing resistance will decrease. When the value of the area of the slots b is more than 0.25, the area of the projection of the extended interceptors 2 on the plane of the frame under the bottom 1 will receive an excess amount of air. The closure of the separation zone in the aft end of the vessel becomes unstable. Excess air is unevenly out of the vessel's transom, which leads to the so-called "tail end of the stern end and loss, as a result, of longitudinal stability of motion. When the ratio of the gap area between the rear surfaces of the interceptors 2 and the rear edges of the 15 grooves a to the total area of the slots b in the shell 10 is 1.0-1.2, the most advantageous pressure drop in the atmosphere-wall path is obtained - the separation zone corresponding to the natural process of the valve separation zone in the optimal mode and, accordingly, effective work of the interceptors 2. If this ratio is less than 1.0, then the air flow in the enclosure 7 will be blocked and not the entire volume of air drawn from the atmosphere will flow into the zone of separated flow. The ventilation of the separation zone will be insufficient, its length will be shortened and the operation of the device as a whole will become ineffective. If this ratio is greater than 1.2, the vacuum in the separation zone is insufficient for complete suction of water from the barrier 7. The presence of water in the barrier 7 leads to a sharp reduction in the amount of air entering the separation zone and, consequently, to an increase in hydrodynamic resistance, experienced by the vessel. Filling the surfaces 12 of the interceptors 2 with the possibility of sliding along the front edges 13 of the bottom grooves prevents the water from penetrating from the pressure zone in front of the interceptors 2 into the enclosure 7 when interlocking. In case between the surfaces 12 of the interceptors 2 and the edges 13 there will be a gap, water and pressure zones in front of the spoilers 2 will break into the enclosure 7, where the pressure is atmospheric. At the same time, the pressure in the zone before the spoilers 2 drops sharply, the draft of the vessel increases, the resistance it experiences increases, and the efficiency of the device as a whole decreases. The use of the proposed high-speed gliding vessel reduces the water resistance to the vessel’s movement by 15–20% compared to a conventional speedboat and, accordingly, increases the travel speed by 8–10%. Claims of the invention A high-speed vessel comprising a hull with side plating and a keeled bottom, which has transverse slit-shaped grooves, separated by a keel section of the bottom and fenced from above with an overlap from above, with hingedly connected to the hull plate interceptors with mechanisms for extending from these transverse slits. grooves that are communicated with air intakes for aerating the bottom of the hull, while the enclosure is located throughout its width, and the side obshchivka connected to the keel the bottom of the cheekbone, characterized in that, in order to eliminate the energy costs of ensuring effective operation of the interceptors, each of the air inlets is made in the form of slots in the side of the side between the upper overlap of the wall and the cheekbone, the total area of these air intakes is 0.20 0.25 of the projection area of the extended interceptors on the plane of the mandrel, the area of the gaps between the rear surfaces of the interceptors and the rear edges of the transverse slit-like grooves is 1.0-1.2 of the total area of ezey air intake and the front surface of interceptors conjugated to the leading edges of the transverse slot-like grooves. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 683947, cl. B 63 B 1/20, 06/08/77 (prototype).  FIG. g , Tf