Water-sealing structure for rocket engine exhaust nozzles based on waterproof sealing umbrella

Abstract

This invention discloses a water-sealing structure for a rocket engine exhaust nozzle based on a waterproof sealing umbrella, comprising a waterproof sealing umbrella release mechanism and a wire-controlled dragging mechanism. After the waterproof sealing umbrella is released by the release mechanism, the wire-controlled dragging mechanism around the exhaust nozzle pulls the waterproof sealing umbrella to cover the rocket engine exhaust nozzle, thus achieving a seal. This structure allows for multiple sealing and opening of the engine exhaust section during water entry and exit.

Description

Technical Field

[0001] This invention belongs to the field of sealing structure design technology, and particularly relates to a water inlet sealing structure for rocket engine tail nozzles based on a waterproof sealing umbrella. Background Technology

[0002] Submersible unmanned aerial vehicles (UAVs) are aircraft capable of flying or traversing complex environments (such as different gas compositions, phases, and airspaces). They can stealthily strike targets underwater using pump-jet propulsion systems like submarines, or surface using their own rocket engines (or by using a propulsion system for steering) to break the surface and switch to aircraft propulsion in the air, performing combat missions like airplanes. They combine the speed of aircraft with the stealth of submarines, making them versatile for future air and sea warfare. Because submersible UAVs need to achieve multi-cycle use and underwater cruising, designing the opening of the rocket engine exhaust nozzle sealing cap and the underwater ignition strategy during the surfacing process is one of the key technical challenges restricting multi-cycle flight. Currently, there are no patents related to solving the problem of sealing the rocket engine during multiple water ingress and surfacing. In practical applications, current submarine-launched missiles, whether cold-launched or hot-launched, use engine exhaust nozzles with sealed caps, making multi-cycle use impossible. Summary of the Invention

[0003] Purpose of the invention

[0004] To address the aforementioned technical problems, this invention provides a water-sealing structure for the rocket engine exhaust nozzle based on a waterproof sealing umbrella. When a submersible unmanned aerial vehicle (UAV) needs to emerge from the water, the sealing device of the rocket engine exhaust nozzle is opened, and the rocket engine operates simultaneously, enabling the submersible UAV to obtain thrust for water exit. When the submersible UAV needs to enter the water, the rocket engine exhaust nozzle can be sealed to prevent water from entering the engine body through the exhaust nozzle after the UAV enters the water.

[0005] Invention Technology Solutions

[0006] A water-sealing structure for a rocket engine tail nozzle based on a waterproof sealing umbrella includes a waterproof sealing umbrella release mechanism and a wire-controlled dragging mechanism. After the waterproof sealing umbrella is released by the waterproof sealing umbrella release mechanism, the wire-controlled dragging mechanism around the tail nozzle pulls the waterproof sealing umbrella to cover the rocket engine tail nozzle to achieve a seal.

[0007] Preferably, the waterproof sealing umbrella release mechanism includes a waterproof sealing umbrella, a waterproof sealing umbrella storage device, and a waterproof sealing umbrella release device; the wire-controlled dragging mechanism includes a motor, a rope, a rope stripping device, and a rope slot; the motor connects the rope to the waterproof sealing umbrella in the waterproof sealing umbrella release mechanism through the rope slot arranged on the outer side of the tailpipe, and the waterproof sealing umbrella release mechanism is connected to the wire-controlled dragging mechanism around the tailpipe; the rope stripping device is used to strip the rope; the sealing umbrella storage device is used to place the waterproof sealing umbrella, and the waterproof sealing umbrella release mechanism can trigger the switch on the umbrella release device to release the waterproof sealing umbrella.

[0008] Preferably, each set of sealed umbrella storage device is equipped with three sets of waterproof sealed umbrellas.

[0009] Preferably, the structure includes two waterproof sealing umbrella release mechanisms and eight wire-controlled drag mechanisms. The waterproof sealing umbrella release mechanisms are arranged above the engine tail nozzles, and the eight wire-controlled drag mechanisms are arranged around the two engine tail nozzles.

[0010] Preferably, during the water exit process, the rocket engine ignites underwater, and the high-temperature gas from the tail nozzle quickly burns away the waterproof sealing umbrella, achieving underwater ignition and water exit. After exiting the water, the rope stripping device is triggered to strip the ropes of the first set of waterproof sealing umbrellas.

[0011] Preferably, before entering the water, the two waterproof sealing umbrella release mechanisms simultaneously trigger the sealing umbrella release device switch, throwing out the first layer of waterproof sealing umbrella in the waterproof sealing umbrella storage device. Affected by the airflow and rearward thrust of the aircraft, the waterproof sealing umbrella quickly unfolds and spreads evenly behind the two rocket engine tail nozzles. Then, the motor start buttons of the eight wire-controlled towing mechanisms are turned on, and the waterproof sealing umbrella is pulled to cover the rocket engine tail nozzles through ropes to achieve sealing.

[0012] Preferably, four wire-controlled drag mechanisms are evenly arranged around each tailpipe, with a 90° included angle.

[0013] Preferably, the three sets of waterproof sealing umbrellas are stored separately in the sealing umbrella storage device according to the order in which the umbrellas were taken out.

[0014] Advantages of this invention: It enables the engine exhaust section to be sealed and opened multiple times during water entry and exit. Motion simulation shows that the flexible waterproof sealing umbrella can successfully unfold, retract, and cover the rocket engine tail nozzle, breaking through the key technology for multiple water entry and exit of submersible unmanned aerial vehicles. Attached Figure Description

[0015] Figure 1 A schematic diagram of the parts where the engine waterproof seal is implemented.

[0016] Figure 2 This is a schematic diagram of the waterproof sealing umbrella release mechanism of the present invention.

[0017] Figure 3 This is a schematic diagram of the wire-controlled drag mechanism.

[0018] Figure 4 This is a schematic diagram of the structure of the waterproof sealing umbrella after it is released.

[0019] In the diagram: 1-Waterproof sealing umbrella release mechanism, 2-Wire-controlled dragging mechanism, 11-Waterproof sealing umbrella, 12-Waterproof sealing umbrella storage device, 13-Waterproof sealing umbrella release device, 21-Motor, 22-Rope, 23-Rope stripping device, 24-Rope slot. Detailed Implementation

[0020] The present invention is achieved through the following technical solution.

[0021] A water-sealing structure for rocket engine exhaust nozzles based on waterproof sealing umbrellas includes two waterproof sealing umbrella release mechanisms 1 and eight wire-controlled dragging mechanisms 2. The waterproof sealing umbrella release mechanism 1 mainly includes three sets of waterproof sealing umbrellas 11, a waterproof sealing umbrella storage device 12, and a waterproof sealing umbrella release device 13. The wire-controlled dragging mechanism 2 mainly includes a motor 21, a rope 22, a rope stripping device 23, and a rope slot 24. Four motors 21 are arranged around each of the two engine exhaust nozzles near the fuselage section. Each motor 21 connects three ropes 22 to the waterproof sealing umbrellas 11 in the waterproof sealing umbrella release mechanism 1 via rope slots 24 arranged on the outer side of the exhaust nozzle. The two waterproof sealing umbrella release mechanisms 1 are respectively connected to the wire-controlled dragging mechanisms 2 around the two exhaust nozzles.

[0022] Its working principle is as follows:

[0023] When navigating underwater: The tail nozzle of the rocket engine is waterproofed and sealed by the waterproof sealing umbrella 11;

[0024] When it is necessary to launch the submersible out of the water: the rocket engine ignites and works, and the exhaust from the tail nozzle directly burns the waterproof sealing umbrella 11, and the rope stripping device 23 strips the rope 22, so as to realize the water launch of the submersible unmanned aerial vehicle.

[0025] Before entering the water in mid-air: the waterproof sealing umbrella 11 in the sealing umbrella storage device 12 is released by the waterproof sealing umbrella release device 13 of the waterproof sealing umbrella release mechanism 1. The rope 22 connected to the waterproof sealing umbrella is disengaged from the rope slot 24 by the backward throwing force. After the waterproof sealing umbrella 11 is fully opened, the waterproof sealing umbrella 11 covers the rear end of the rocket engine tail nozzle. Then, the waterproof sealing umbrella 11 is pulled by the motor 21 to retract the rope 22 through the wire-controlled dragging device 2, so that the umbrella surface of the sealing umbrella 11 completely covers the tail nozzle outlet.

[0026] Because the sealing umbrella storage device 12 is equipped with three sets of waterproof sealing umbrellas 11, the submersible unmanned aerial vehicle has the ability to enter and exit the water three times, which has obvious technical advantages over the existing single water exit technology.

[0027] The scope of protection of this invention is not limited to the embodiments described above. Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its scope. If such modifications and variations fall within the scope of the claims of this invention and their equivalents, then the intent of this invention also includes these modifications and variations.

Claims

1. A water-sealing structure for the tail nozzle of a rocket engine based on a waterproof sealing umbrella, characterized in that, It includes a waterproof sealing umbrella release mechanism (1) and a wire-controlled dragging mechanism (2); after the waterproof sealing umbrella release mechanism (1) releases the waterproof sealing umbrella (11), the wire-controlled dragging mechanism (2) around the tail nozzle pulls the waterproof sealing umbrella (11) to cover the tail nozzle of the rocket engine to achieve sealing; the waterproof sealing umbrella release mechanism (1) includes a waterproof sealing umbrella (11), a waterproof sealing umbrella storage device (12), and a waterproof sealing umbrella release device (13); the waterproof sealing umbrella storage device (12) is used to place the waterproof sealing umbrella (11), and the waterproof sealing umbrella release mechanism (1) can trigger the switch on the waterproof sealing umbrella release device (13) to release the waterproof sealing umbrella (11). The waterproof sealing umbrella storage device (12) is equipped with three sets of waterproof sealing umbrellas (11).

2. The water inlet sealing structure for a rocket engine tail nozzle based on a waterproof sealing umbrella as described in claim 1, characterized in that, The wire-controlled dragging mechanism (2) includes a motor (21), a rope (22), a rope stripping device (23), and a rope slot (24); the motor (21) connects the rope (22) to the waterproof sealing umbrella (11) in the waterproof sealing umbrella release mechanism (1) through the rope slot (24) arranged on the outer side of the tail nozzle; the waterproof sealing umbrella release mechanism (1) is connected to the wire-controlled dragging mechanism (2) around the tail nozzle; the rope stripping device (23) is used to strip the rope (22).

3. The water inlet sealing structure for a rocket engine tail nozzle based on a waterproof sealing umbrella as described in claim 1, characterized in that, The structure includes two waterproof sealing umbrella release mechanisms (1) and eight wire-controlled dragging mechanisms (2). The waterproof sealing umbrella release mechanism (1) is arranged above the engine tail nozzle, and the eight wire-controlled dragging mechanisms are respectively arranged around the two engine tail nozzles.

4. The water inlet sealing structure for a rocket engine tail nozzle based on a waterproof sealing umbrella as described in claim 3, characterized in that, During the water exit process, the rocket engine ignites underwater, and the high temperature gas from the tail nozzle quickly burns the waterproof sealing umbrella (11), achieving underwater ignition and water exit. After exiting the water, the rope stripping device (23) is triggered to strip the rope (22) of the first set of waterproof sealing umbrellas (11).

5. The water inlet sealing structure for a rocket engine tail nozzle based on a waterproof sealing umbrella as described in claim 4, characterized in that, Before entering the water, the two waterproof sealing umbrella release mechanisms (1) simultaneously trigger the switch of the waterproof sealing umbrella release device (13), throwing out the first layer of waterproof sealing umbrella (11) in the waterproof sealing umbrella storage device (12). The waterproof sealing umbrella (11) is rapidly unfolded by the airflow and rearward thrust of the aircraft and spread evenly on the tail nozzles of the two rocket engines. The motor (21) start button of the eight wire-controlled dragging mechanisms (2) is turned on, and the waterproof sealing umbrella (11) is pulled to cover the tail nozzles of the rocket engines through the rope (22) to achieve sealing.

6. The water-sealing structure for a rocket engine exhaust nozzle based on a waterproof sealing umbrella as described in claim 5, characterized in that, Four wire-controlled dragging mechanisms are evenly arranged around each tail nozzle (2).

7. The water inlet sealing structure for a rocket engine tail nozzle based on a waterproof sealing umbrella as described in claim 1, characterized in that, The three sets of waterproof sealing umbrellas (11) are stored separately in the waterproof sealing umbrella storage device (12) according to the order in which the umbrellas were taken out.

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