Pop-up explosive signal source for a distressed submarine

Abstract

FIELD: transmitting hydroacoustic signals.SUBSTANCE: invention is used by a submarine in distress when it is impossible to notify of an emergency by other means. The floating explosive signal source for an emergency submarine consists of a positive buoyancy body, which includes a buoyancy tank, a cover with latches, a safety step, a cord, an explosive substance, a detonator, a switch and a time detonator, a bar with holes and plugs for filling the buoyancy tank with water. The buoyancy tank also comprises a surfacing tank with a bleed-safety valve and a tank with a hydro-reactive substance, and the switch is located on the upper surface of the surfacing tank, which triggers the detonator, detonating the explosive substance in the sub-ice sound channel.EFFECT: notification of an accident involving a submarine lying on the seabed is achieved by detonating an explosive in an underwater sound channel under the ice.1 cl, 1 dwg

Description

[0001] The invention relates to the field of transmitting hydroacoustic signals and is used by a submarine in distress when it is impossible to notify of an emergency by other means, in particular from under the ice by creating a sound source in an acoustic sound channel located directly under the ice by detonating an explosive.

[0002] A known explosive sound source device is used from surface ships or other means [1]. The disadvantages of this device are the lack of positive buoyancy, as well as the fact that the detonation of the explosive occurs at an arbitrary depth, depending on the set delay time of the fuse.

[0003] A known design for a signal cartridge containing paint is used from a submarine and floats to the surface. A drawback of this device is the lack of explosives, which, when search and rescue equipment are located far from the site of the accident, makes it difficult to locate the stricken submarine due to the drifting paint.

[0004] A hydroacoustic imitation cartridge is known to create a bubble curtain at depths of 20 to 70 meters [2]. A drawback of this device is the inability to transmit a signal due to the lack of explosive material. In this case, only visual detection at short distances is possible.

[0005] It has been experimentally established that a near-surface underwater sound channel with a depth of 10-15 meters is established under the lower edge of the ice cover in the Arctic Ocean [3].

[0006] The objective of the invention is to alert a submarine lying on the ground about an accident by detonating an explosive in an underwater sound channel under the ice.

[0007] The solution is achieved by having the device float to the ice surface, insert it into an underwater sound channel, and detonate an explosive inside, transmitting a detectable sound signal over a distance of 400 to 1000 km. The explosive mass reaches a maximum of 3 kg.

[0008] Submarines typically emit five or more active range-measuring signals when indicating an emergency, so at least six floating explosive signal sources must be used. This will allow coastal monitoring centers or special sonar buoys to determine the submarine's distress status and its probable location when receiving signals from the floating explosive signal source.

[0009] The design of the pop-up explosive signal source device is shown in Fig.

[0010] The device consists of a body 1, a buoyancy tank 2, a filling bar 3, filling holes 4, filling hole plugs 5, a hydroreactive substance 6, a device cover 7, device cover fasteners 8, a floating tank 9, a bleed-and-relief valve 10, a safety stage 11, a cord 12, an explosive substance (charge) 13, a detonator 14, a switch 15 and a time detonator 16.

[0011] The device operates as follows.

[0012] The floating explosive signal source is designed to be used from the submarine's standard equipment. In the event of an emergency on a submarine, when it is grounded under ice, and other means of reporting the emergency are impossible, or to attract the attention of search and rescue forces and equipment, the floating explosive signal source is used.

[0013] After firing the floating explosive signal source from the device for firing imitation signal cartridges - a standard feature of the submarine, or in extreme cases through the escape hatches under the influence of the hull 1, made of a durable material with positive buoyancy and buoyancy capacity 2, the device begins to float. Water, having entered through the filling bar 3 with filling holes 4, from which plugs 5 have been previously removed, enters the hydro-reactive substance 6. Hydro-reactive substance 6, under the influence of seawater, begins to release gas, which displaces the cover of the device 7, from which the cover fasteners 8 were previously (during preparation of the device for firing) removed. Under the influence of the gas formed by the hydro-reactive substance 6, the floating capacity 9 with the bleed-and-relief valve 10 is pushed out.The ascent vessel 9 and the vessel containing the hydroreactive substance 6 are similarly integrated, as in the hydroacoustic simulation cartridge, with the only difference being that the ascent vessel 9 is made of a durable elastic material and expands under the influence of the gas. The vessel's rupture is controlled by the bleed-and-relief valve 10.

[0014] When floating vessel 9 is pushed out, safety stage 11 is released, which in turn frees the cord 12 and ensures the separation of explosive 13 with its built-in detonator 14 from housing 1. The cord length for ensuring detonation in the underwater sound channel under the ice cover should be 5-6 meters. When floating vessel 9 touches the ice cover, switch 15, located on the upper surface of floating vessel 9, is triggered. Switch 15 triggers detonator 14, detonating explosive (charge) 13.

[0015] If the switch 15 fails to operate, the charge is detonated by the time fuse 16, which is pre-set for a certain safe time to detonate the explosive substance (charge) 13 and is launched when the explosive substance is separated from the main body 1.

[0016] A new distinctive feature of the claimed invention is the ability to notify over a significant distance (up to 1000 km) about an accident or transmit other information from an emergency underwater object lying on the ground.

[0017] The use of this invention will allow us to solve the problem of classifying an emergency object lying on the ground, and, using the triangulation method, determine the area of ​​its location.

[0018] Literature

[0019] 1. Patent No. 2681964. Method of using explosive sound sources: No. 2017116887: declared 15.05.2017: published 14.03.2019 / A.V. Novikov, A.A. Forostyany, A.V. Ledov, A.V. Chernykh, F.V. Vinokurov, A.K. Zharovov; patent holder FGKVOU VO "VUNC NAVY "VMA" named after Admiral of the Fleet of the Soviet Union N.G. Kuznetsov" - 5 p.

[0020] 2. Hydroacoustic imitation cartridge. Technical description.

[0021] 3. Underwater acoustics. Part 2. Chapter 7. / translated from English.

[0022] 10. Yu.Zhitkovsky, Yu.P. Lysanova - Moscow: Mir, 1970. - 495 p.

Claims

A floating explosive signal source for a submarine in distress, consisting of a positive buoyancy casing that includes a buoyancy tank, a cover with latches, a safety stage, a cord, an explosive substance, a detonator, a switch and a time detonator, a bar with openings and plugs for filling the buoyancy tank with water, characterized in that the buoyancy tank also contains a surfacing tank with a bleed-and-safety valve and a tank with a hydro-reactive substance, and the switch is located on the upper surface of the surfacing tank, from which the detonator is triggered, detonating the explosive substance in the sub-ice sound channel.

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