A method for preparing frost-free impact bombs for aircraft structural resistance to frost bomb impact tests

Abstract

This application belongs to the technical field of aircraft structure anti-icing bomb impact testing, specifically relating to a method for preparing frost-ice bombs for aircraft structure anti-icing bomb impact testing, including: Step 1, placing pure water in a -20℃ environment to cool it down, forming an ice-water mixture; Step 2, injecting the low-temperature water from the ice-water mixture into the water bottle of a bubble water machine, starting the bubble water machine to aerate the low-temperature water, forming bubble water; Step 3, injecting the bubble water into an ice bomb preparation mold, and then placing the ice bomb preparation mold in a -20℃ environment to freeze it, obtaining a frost-ice bomb.

Description

Technical Field

[0001] This application belongs to the field of aircraft structure anti-icing bomb impact test technology, specifically relating to a method for preparing frost-ice bombs for aircraft structure anti-icing bomb impact test. Background Technology

[0002] During high-speed flight, aircraft face the challenge of being impacted by hail. Structures such as the windshield, wings, and engine fan blades are susceptible to hail impacts, necessitating targeted anti-hail impact tests.

[0003] Currently, most aircraft structural anti-icing impact tests use distilled water to freeze artificial hail at low temperatures. The hail prepared in this way has a high density and hardness, close to the state of clear ice. However, some tests require the use of low-density artificial hail, i.e. frost ice.

[0004] Frost ice is a cloudy, white ice that forms in air with low liquid water content and small water droplet size when the temperature is low. It usually has a good aerodynamic shape and is easy to freeze on aircraft structures.

[0005] Frost ice generally has higher adhesion properties and lower density than clear ice, making it more difficult to prepare artificially. Currently, frost ice bullets are mostly prepared using crushed ice pressing technology. However, the resulting ice bullets often have internal cracks, affecting their integrity. They are prone to breakage in high-speed ice bullet impact tests and cannot meet the test requirements.

[0006] How to artificially prepare ice projectiles that are easy to launch, stable in properties, and similar to those of frost and ice in the natural environment for use in aircraft structural resistance tests against ice projectile impacts is a problem that urgently needs to be solved. Therefore, this application is submitted. Summary of the Invention

[0007] The purpose of this application is to provide a method for preparing frost-ice bombs for aircraft structural anti-icing bomb impact tests, so as to prepare frost-ice bombs that meet the test index requirements for use in aircraft structural anti-icing bomb impact tests.

[0008] The technical solution of this application is:

[0009] A method for preparing frost-ice projectiles for aircraft structural impact resistance tests includes:

[0010] Step 1: Place the purified water in a -20℃ environment to cool it down, forming an ice-water mixture;

[0011] Step 2: Pour the low-temperature water from the ice-water mixture into the water bottle of the sparkling water machine, and start the sparkling water machine to aerate the low-temperature water to form sparkling water;

[0012] Step 3: Inject the bubble water into the ice bomb preparation mold, and then place the ice bomb preparation mold in a -20℃ environment to freeze it, thus obtaining the frost ice bomb.

[0013] According to at least one embodiment of this application, in the above-mentioned method for preparing frost-ice bullets for aircraft structure anti-ice bullet impact test, the ice bullet preparation mold is a metal mold, including a mold body and a mold cover plate.

[0014] The mold body and the mold cover plate are connected by bolts, forming multiple ball sockets between them. The side wall of the mold body is formed with multiple water injection ports.

[0015] Each water inlet is cone-shaped and connects to each ball socket.

[0016] According to at least one embodiment of this application, in the above-mentioned method for preparing frost-ice bombs for aircraft structure anti-icing bomb impact test, in step one, 1.2L of pure water is taken and placed in a -20℃ refrigerator for cooling, and then taken out after forming an ice-water mixture.

[0017] According to at least one embodiment of this application, in the above-mentioned method for preparing frost-free impact test ice bombs for aircraft structure, in step two, 850ml of low-temperature water is injected into the water bottle of the sparkling water machine, the button of the sparkling water machine is pressed six times, each time for 1 to 2 seconds, to aerate the low-temperature water, and after aeration, the water bottle is removed and the cap is tightened.

[0018] According to at least one embodiment of this application, in the above-mentioned method for preparing frost ice bombs for aircraft structure anti-ice bomb impact test, in step three, bubble water is poured into a wide-mouth container, and a syringe is used to inject the bubble water into the ball socket through the water inlet until the amount of bubble water reaches the water inlet. The ice bomb preparation mold is placed in a -20°C freezer for freezing for 24 hours.

[0019] After the ice puck is frozen, place the ice puck preparation mold at room temperature for three minutes, remove the bolts connecting the mold body and the mold cover plate, separate the mold body and the mold cover plate, take out the frost ice puck, put it in a polyethylene packaging bag, and store it in a -20℃ freezer.

[0020] This application has at least the following beneficial technical effects:

[0021] This invention provides a method for preparing frost-ice bombs for aircraft structural anti-icing impact tests. The method uses water bubbles formed by dissolving carbon dioxide gas in water as a raw material for manufacturing artificial hail. The frost-ice bombs prepared meet the density requirements of frost and ice, exhibit good integrity, similar properties, and excellent mechanical properties. They can be launched at high speeds, meeting the requirements of aircraft structural anti-icing impact tests. This method improves the consistency between the test and the actual environment, enhancing the realism of the test. Attached Figure Description

[0022] Figure 1 This is a flowchart of a method for preparing frost-ice bombs for an aircraft structure to withstand frost-ice bomb impact test, provided in an embodiment of this application.

[0023] Figure 2 This is a schematic diagram of the ice bullet preparation mold provided in the embodiments of this application.

[0024] To better illustrate this embodiment, some content in the accompanying drawings may be omitted, enlarged, or reduced. They are for illustrative purposes only and should not be construed as limiting the scope of this application. Detailed Implementation

[0025] To make the technical solution and advantages of this application clearer, the technical solution of this application will be described in a clearer and more complete manner below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of this application, and are only used to explain this application, not to limit this application. It should be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, and other related parts can be referred to the general design.

[0026] Furthermore, unless otherwise defined, the technical or scientific terms used in this application description shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The word "comprising" as used in this application description indicates that the concept preceding the word encompasses the concepts listed following the word and their equivalents, without excluding other related concepts.

[0027] Furthermore, the terms indicating location used in the description of this application are only used to indicate relative directions or positional relationships. When the absolute position of the described object changes, its relative positional relationship may also change accordingly. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation" and "connection" used in the description of this application should be interpreted broadly. For example, a connection can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand its specific meaning in this application according to the specific circumstances.

[0028] A method for preparing frost-ice projectiles for aircraft structural impact resistance testing, such as... Figure 1 As shown.

[0029] Step 1: Place the purified water in a -20℃ environment to cool it down, forming an ice-water mixture.

[0030] Take 1.2L of pure water in a low-temperature resistant container and place it in a -20℃ freezer to cool it down. Control the cooling time according to the amount of water until an ice-water mixture is formed, then take it out.

[0031] Step 2: Pour the low-temperature water from the ice-water mixture into the water bottle of the sparkling water machine, and start the sparkling water machine to aerate the low-temperature water to form sparkling water.

[0032] You can fill the water bottle of the sparkling water machine with 850ml of low-temperature water, press the sparkling water machine button six times, each time for 1 to 2 seconds, to inflate the low-temperature water. After inflating, remove the water bottle and tighten the cap.

[0033] Step 3: Inject the bubble water into the ice bomb preparation mold, and then place the ice bomb preparation mold in a -20℃ environment to freeze it, thus obtaining the frost ice bomb.

[0034] Ice bullet preparation mold, such as Figure 2 As shown, a metal mold includes a mold body and a mold cover plate. The mold body and the mold cover plate are connected by bolts, forming multiple ball sockets. The side wall of the mold body is formed with multiple water inlets, each of which is conical and connects to a ball socket.

[0035] Pour a small amount of sparkling water into a wide-mouthed container. Using a syringe, inject the sparkling water into the ball socket through the injection port until the amount of sparkling water reaches the injection port. Quickly place the ice bomb preparation mold in a -20°C freezer for 24 hours.

[0036] After the ice puck is frozen, place the ice puck preparation mold at room temperature for about three minutes, then quickly remove the bolts connecting the mold body and the mold cover plate, separate the mold body and the mold cover plate, take out the frost ice puck, put it in a polyethylene packaging bag, and store it in a -20℃ freezer.

[0037] The above-described embodiment discloses a method for preparing frost-ice bombs for aircraft structural anti-icing impact tests. This method uses water bubbles formed by dissolving carbon dioxide gas in water as a raw material for manufacturing artificial hail. The frost-ice bombs prepared meet the density requirements of frost and ice, exhibit good integrity, similar properties, and excellent mechanical properties. They can be launched at high speed, meeting the requirements of aircraft structural anti-icing impact tests. This improves the consistency between the test and the actual environment, enhancing the authenticity of the test.

[0038] The technical solution of this application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A method for preparing frost-free impact bombs for aircraft structural anti-icing bomb impact tests, characterized in that, include: Step 1: Place the purified water in a -20℃ environment to cool it down, forming an ice-water mixture; Step 2: Pour the low-temperature water from the ice-water mixture into the water bottle of the sparkling water machine, and start the sparkling water machine to aerate the low-temperature water to form sparkling water; Step 3: Inject the bubble water into the ice bomb preparation mold, and then place the ice bomb preparation mold in a -20℃ environment to freeze it, thus obtaining the frost ice bomb.

2. The method for preparing frost-free impact test frost-free projectiles for aircraft structure according to claim 1, characterized in that, The ice bomb preparation mold is a metal mold, including the mold body and the mold cover plate; The mold body and the mold cover plate are connected by bolts, forming multiple ball sockets between them. The side wall of the mold body is formed with multiple water injection ports. Each water inlet is cone-shaped and connects to each ball socket.

3. The method for preparing frost-free impact test frost-free projectiles for aircraft structure according to claim 2, characterized in that, In step one, take 1.2L of purified water and place it in a -20℃ refrigerator to cool it down, then take it out after forming an ice-water mixture.

4. The method for preparing frost-free impact test frost-free projectiles for aircraft structure according to claim 3, characterized in that, In step two, pour 850ml of low-temperature water into the water bottle of the sparkling water machine, press the sparkling water machine button six times, each time for 1 to 2 seconds, to inflate the low-temperature water. After inflating, remove the water bottle and tighten the cap.

5. The method for preparing frost-free impact test frost-free projectiles for aircraft structure according to claim 4, characterized in that, In step three, pour sparkling water into a wide-mouthed container, and use a syringe to inject the sparkling water into the ball socket through the water inlet until the amount of sparkling water reaches the water inlet. Place the ice bomb preparation mold in a -20℃ freezer for freezing for 24 hours. After the ice puck is frozen, place the ice puck preparation mold at room temperature for three minutes, remove the bolts connecting the mold body and the mold cover plate, separate the mold body and the mold cover plate, take out the frost ice puck, put it in a polyethylene packaging bag, and store it in a -20℃ freezer.

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