Helicopter seawater-supercooled air interface environmental suitability test system and method

Abstract

The present application belongs to the technical field of environmental adaptability evaluation of aviation equipment, and particularly relates to a helicopter seawater-ultra-cold air interface environmental adaptability test system and method. A simulation test environment and a test system are constructed. A simulation test environment is arranged in a large-scale climate environment laboratory. The simulation test environment comprises a container containing a certain amount of seawater, and a platform for placing a test equipment is arranged in the container. A mechanism for driving seawater flow and a heating mechanism are arranged in the container. The seawater in the container flows in a set direction under the driving of the mechanism. A heating zone is defined at the position of the heating mechanism in the container. The seawater is heated by the heating mechanism, evaporated, condensed in a low-temperature zone, and then reenters the container to form a cycle. The interface environmental adaptability of lifesaving, task and scientific research equipment carried by a helicopter when the equipment is pulled from liquid seawater to extremely cold air can be fully evaluated. An evaluation method for the polar sea interface environmental adaptability of lifesaving, task and scientific research equipment carried by a helicopter is provided.

Description

Technical Field

[0001] This invention belongs to the field of environmental adaptability assessment technology for aviation equipment, specifically relating to a test method for the environmental adaptability of helicopters at the seawater-ultra-cold air interface. It is used to assess the environmental adaptability of helicopter rescue, mission, and scientific research equipment in polar seas, and involves the performance assessment of technical equipment related to polar regions, helicopters, rescue, and environmental adaptability. Background Technology

[0002] The demand for helicopters in the Antarctic and Arctic waters is constantly increasing. In the polar environment, the air temperature on the surface of liquid seawater is very low, reaching as low as -40°C, while the seawater remains in a liquid state and does not freeze due to the huge tidal energy.

[0003] In polar seas, helicopter-borne rescue, mission, and scientific research equipment faces the challenge of being pulled from liquid seawater into extremely cold air. During this process, the liquid seawater adheres to the equipment's surfaces, crevices, and interior, and freezes instantly upon extraction, potentially causing damage. To prevent this damage, relevant environmental adaptability designs are necessary to assess the equipment's resistance to polar marine environments. Furthermore, the adaptability to this interface environment should be tested and verified under simulated domestic conditions to ensure the safe operation of various equipment in polar seas and provide crucial data support for the development of helicopter-borne equipment. Summary of the Invention

[0004] The purpose of this invention is to fill the gap in the assessment of the adaptability of helicopters to the seawater-ultra-cold air interface environment in polar seas. This invention provides an environmental testing method for the adaptability of helicopter onboard equipment to the seawater-ultra-cold air interface environment.

[0005] Technical Solution: This invention proposes an experimental system for evaluating the adaptability of helicopters to the seawater-ultra-cold air interface environment. The experimental system sets up a simulated test environment in a large-scale climate environment laboratory. The simulated test environment includes a container holding a certain amount of seawater, and a platform for placing the test equipment is set up inside the container. The container is equipped with a mechanism for driving the flow of seawater and a heating mechanism. The seawater in the container flows in a set direction under the drive of the mechanism. The location of the heating mechanism in the container is defined as a heating zone. After being heated by the heating mechanism, the seawater evaporates and condenses in the low-temperature zone, forming a cycle and re-entering the container.

[0006] Furthermore, the seawater container serves as a test pool, with the lower half being the heating zone and the upper half being the test zone. The top is open to facilitate observation of the equipment's test status.

[0007] Furthermore, the test pool is placed in a large climate environment laboratory, which is large enough, generally no less than 10 times the size of the test pool.

[0008] Furthermore, the mechanism for driving the seawater flow is a convection drive device; specifically, the convection drive device is equipped with an electric hydraulic pump on the left side of the pool, which takes in water from the right side and sprays it upward; an electric hydraulic pump is arranged on the right side of the pool, which takes in water from the top and sprays it from the left side, forming a complete convection drive device, so that the hot and cold water circulate and tend to be basically constant temperature.

[0009] In another aspect, this invention also proposes a test method for the adaptability of helicopters to the seawater-ultra-cold air interface environment. The test method is based on the test system described above and includes the following steps:

[0010] Step S1: Place a container filled with seawater of a certain concentration inside a large climate environment laboratory; the concentration inside the container;

[0011] Step S2: Activate the large-scale climate environment laboratory to cool it down until it reaches the set target temperature;

[0012] Step S3: Start the heating equipment and heat convection equipment of the test water tank to keep the seawater temperature between -4 and 0°C and maintain it in a liquid state;

[0013] Step S4: After the temperature in the test pool and the large climate environment test chamber reaches equilibrium, simulate the helicopter usage profile and use electric winches, hydraulic winches and other equipment to sink the test equipment into the upper part of the test pool. After completing the prescribed work items, test its functional performance.

[0014] Step S5: Pull out the equipment and observe its water output status, icing condition, equipment structure and appearance damage. Test the equipment's functionality and performance after de-icing.

[0015] Step S6: End of experiment.

[0016] Furthermore, in the above-mentioned experimental methods, the seawater concentration and the target temperature of the large-scale climate environment laboratory can be specifically set according to the research and development requirements.

[0017] Beneficial technical effects: It can fully assess the interfacial environmental adaptability of helicopter-borne rescue, mission, and scientific research equipment when it is pulled from liquid seawater into extremely cold air, providing an assessment method for the interfacial environmental adaptability of helicopter-borne rescue, mission, and scientific research equipment in polar sea areas. Attached Figure Description

[0018] Figure 1 This is a diagram of the experimental system architecture for this invention. Detailed Implementation

[0019] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] This invention designs an experimental system for evaluating the environmental adaptability of helicopters to the seawater-ultra-cold air interface. The experimental system sets up a simulated test environment in a large-scale climate environment laboratory. The simulated test environment includes a container holding a certain amount of seawater, and a platform for placing the test equipment is set up inside the container. The container is equipped with a mechanism for driving the flow of seawater and a heating mechanism. The seawater in the container flows in a predetermined direction under the drive of the mechanism. The location of the heating mechanism in the container is defined as a heating zone. After being heated by the heating mechanism, the seawater evaporates and condenses in the low-temperature zone, forming a cycle and re-entering the container.

[0021] For specific implementation details, please refer to the appendix. Figure 1 Building a simulated experimental environment: The building process is

[0022] ① Construct a test water tank (approximately 9 square meters in area and 2 meters in height), divided into upper and lower parts. The lower part is the heating zone, and the upper part is the test zone. A convection drive device is used to promote the flow of liquid in the upper and lower parts.

[0023] ② Place the large water tank in a large climate environment laboratory. The laboratory should be large enough, generally no less than 10 times the size of the test water tank. Place seawater with a concentration of 3.5% in the water tank (the seawater concentration is according to the research and development requirements).

[0024] ③Activate the large-scale climate environment laboratory to cool it down, with the target temperature set at -40℃ (the temperature can be adjusted according to the research and development requirements);

[0025] During the specific test, an electric winch and a hydraulic winch were used to simulate the suspension device of a helicopter to suspend the equipment above the water tank, simulating the state of a helicopter hovering over the sea surface and the mission equipment not being submerged in water. This implementation step helps to simultaneously verify the winch body's ability to pull and stretch out water-freezing cables that freeze quickly.

[0026] ④ Start the heating and heat convection equipment in the test water tank to keep the seawater temperature between -4 and 0℃ and maintain it in a liquid state;

[0027] ⑤ After the temperature in the test pool and the large climate environment test chamber reaches equilibrium, simulate the helicopter use profile, and use electric winches, hydraulic winches and other equipment to sink the test equipment into the upper part of the test pool, complete the prescribed work items and test its functional performance.

[0028] ⑥ Pull the equipment out and observe its water output status, icing condition, structural and external damage. Test the equipment's functionality and performance after de-icing.

[0029] During the test, if the cables of the suspended equipment are icy, observe and record the working condition of the electric winch and hydraulic winch pulling out the icy cables, and the traction rate.

[0030] ⑦ The experiment is over.

[0031] The key points of this invention are as follows:

[0032] Key point 1: Design a dual test chamber device consisting of a test water tank and a large-scale climate environment test chamber to simulate the interface environment of polar seas;

[0033] Key point 2: The test pool is designed with two areas: a lower heating zone and an upper test zone, so that the upper test zone can simulate the state of seawater not freezing due to the tidal energy of the ocean.

[0034] Key Point 3: Minimum ratio requirement between test water tanks and large-scale climate environment test laboratories;

[0035] Key Point 4: The necessity of assessing the adaptability of polar helicopter equipment to the polar marine environment.

[0036] The above specific embodiments or examples are only used to explain the technical solutions of the present invention and are not intended to limit the present application. Parts not described in detail are considered to be conventional technical means or common knowledge in the field. Those skilled in the art should understand that, based on the design concept of the present application, it is possible to make adaptive modifications to the technical solutions described in the foregoing embodiments or to make equivalent substitutions for some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A test system for evaluating the adaptability of helicopters to the seawater-ultra-cold air interface environment, characterized in that, The experimental system sets up a simulated experimental environment in a large-scale climate environment laboratory. The simulated experimental environment includes a container holding a certain amount of seawater, and a platform for placing the test equipment is set up inside the container. The container is equipped with a mechanism to drive the flow of seawater and a heating mechanism. The seawater in the container flows in a set direction under the drive of the mechanism. The location of the heating mechanism in the container is defined as the heating zone. After the seawater is heated by the heating mechanism, it evaporates and condenses in the low-temperature zone, forming a cycle and re-entering the container. The specific experimental method includes the following steps: Step S1: Place the container holding a certain concentration of seawater inside a large climate environment laboratory; Step S2: Activate the large-scale climate environment laboratory to cool it down until it reaches the set target temperature; Step S3: Start the heating equipment and the mechanism that drives the seawater flow in the test water tank to keep the seawater temperature between -4 and 0°C and maintain it in a liquid state; Step S4: After the temperature in the test pool and the large climate environment test chamber reaches equilibrium, simulate the helicopter use profile and use an electric winch or hydraulic winch to submerge the test equipment in the upper part of the test pool. After completing the prescribed work items, test its functional performance. Step S5: Pull out the equipment and observe its water output status, icing condition, equipment structure and appearance damage. Test the equipment's functionality and performance after de-icing. Step S6: End of experiment.

2. The test system for assessing the adaptability of helicopters to the seawater-ultra-cold air interface environment as described in claim 1, characterized in that, The seawater container serves as the test pool, with the lower half being the heating zone and the upper half being the test zone. The top is open to facilitate observation of the equipment's test status.

3. The test system for evaluating the adaptability of helicopters to the seawater-ultra-cold air interface environment as described in claim 2, characterized in that, The test pool is placed inside a large climate environment laboratory, the volume of which is no less than 10 times that of the test pool.

4. The test system for evaluating the adaptability of helicopters to the seawater-ultra-cold air interface environment as described in claim 1, characterized in that, The mechanism that drives the seawater flow is a convection drive device.

5. The test system for evaluating the adaptability of helicopters to the seawater-ultra-cold air interface environment as described in claim 4, characterized in that, The convection drive device consists of an electric hydraulic pump on the left side of the pool, which takes in water from the right and sprays it upwards; and an electric hydraulic pump on the right side of the pool, which takes in water from the top and sprays it from the left, forming a complete convection drive device that circulates between the hot and cold water, tending towards a basically constant temperature.

6. The test system for assessing the adaptability of helicopters to the seawater-ultra-cold air interface environment as described in claim 1, characterized in that, If the cable of the suspension equipment is icy in step S5, observe and record the working condition and traction rate of the electric winch or hydraulic winch pulling out the icy cable.

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