A dual-purpose airspeed measuring device for water and air

Abstract

The present invention relates to the technical field of airspeed measuring devices, and provides a water-air dual-purpose airspeed measuring device, comprising a static pressure channel, a static pressure port connected to the static pressure channel, a dynamic pressure channel, a dynamic pressure port connected to the dynamic pressure channel, an airspeed meter sensing element, a first closing component, and a second closing component. The airspeed meter sensing element is arranged in the static pressure channel and the dynamic pressure channel for sensing the airspeed. The first closing component and the second closing component are arranged on both the static pressure channel and the dynamic pressure channel, and the first closing component and the second closing component are respectively located on both sides of the airspeed meter sensing element, and the first closing component is close to the static pressure port and the dynamic pressure port. Among them, the water-air dual-purpose airspeed measuring device has a measuring state, a protection state, and a purging state, so that the water-air dual-purpose airspeed measuring device can be used in a water-air environment.

Description

Technical Field

[0001] The present disclosure relates to the technical field of airspeed measurement devices, and in particular to an airspeed measurement device for a dual-purpose water-air vehicle. Background Art

[0002] A dual-use aircraft is an aircraft that can cross the interface between water and air multiple times and can continue to sail and be reused. A dual-use aircraft has the ability to operate underwater, cross water and air, and cruise in the air. It has broad application prospects in the fields of sea-air communications, search and rescue, and underwater equipment maintenance.

[0003] As a key device for measuring flight speed on an aircraft, the accuracy and reliability of the pitot tube are crucial to flight safety. When a dual-purpose aircraft is performing underwater operations, the pitot tube will be corroded by a large amount of water, and some of the water will enter the pitot tube. When the dual-purpose aircraft switches to aerial operations, the residual water accumulated inside the pitot tube will cause inaccurate airspeed readings. This is because the existing airspeed measurement relies on the pressure difference between the static pressure and dynamic pressure of the pitot tube, and the accumulated water will change this pressure difference, thereby affecting the accurate measurement of the airspeed. Inaccurate airspeed readings will make it impossible to correctly judge the speed and performance of the aircraft, which will affect the aircraft's climb, descent, turn, etc. Summary of the invention

[0004] In order to solve the above technical problems, the present disclosure provides a dual-purpose airspeed measuring device for water and air, which has a measuring state, a protection state and a purge state, and is suitable for dual-purpose air and water aircraft operating across boundaries.

[0005] The present disclosure provides a dual-purpose airspeed measuring device for water and air, comprising a static pressure channel, a static pressure port connected to the static pressure channel, a dynamic pressure channel, a dynamic pressure port connected to the dynamic pressure channel, an airspeed meter sensing element, a first closing component and a second closing component. The airspeed meter sensing element is arranged in the static pressure channel and the dynamic pressure channel for sensing the airspeed. The first closing component and the second closing component are arranged on both the static pressure channel and the dynamic pressure channel, and the first closing component and the second closing component are respectively located on both sides of the airspeed meter sensing element, and the first closing component is close to the static pressure port and the dynamic pressure port. Among them, the dual-purpose airspeed measuring device for water and air has a measuring state, a protective state and a purging state. When in the measuring state, the first closing component is opened and the second closing component is closed; when in the protective state, the first closing component is closed; when in the purging state, the first closing component and the second closing component are both opened.

[0006] Optionally, the water-air dual-purpose airspeed measuring device includes an air source, which is connected to the static pressure channel and the dynamic pressure channel and is arranged on a side of the second closing component away from the airspeed meter sensing element.

[0007] Preferably, the airspeed measuring device for water and air includes a static pressure tube, a dynamic pressure tube and a pitot tube, the static pressure channel includes a channel and a first channel defined by the static pressure tube, and the dynamic pressure channel includes a channel and a second channel defined by the dynamic pressure tube; the static pressure port, the dynamic pressure port, the first channel and the second channel are all arranged on the pitot tube, the static pressure port is connected to the first channel, and the dynamic pressure port is connected to the second channel. Among them, the first closing component, the second closing component and the airspeed meter sensing element are all arranged on the static pressure tube and the dynamic pressure tube, and the air source can enter the static pressure channel and the dynamic pressure channel through the static pressure tube and the dynamic pressure tube respectively.

[0008] Specifically, the first closing component includes a first solenoid valve and a second solenoid valve, and the second closing component includes a third solenoid valve and a fourth solenoid valve. The first solenoid valve is arranged on the static pressure pipe between the pitot tube and the airspeed meter sensing element, the third solenoid valve is arranged on the static pressure pipe between the airspeed meter sensing element and the air source, the second solenoid valve is arranged on the dynamic pressure pipe between the pitot tube and the airspeed meter sensing element, and the fourth solenoid valve is arranged on the dynamic pressure pipe between the airspeed meter sensing element and the air source.

[0009] Optionally, the dual-purpose airspeed measuring device for water and air includes a liquid level sensor and a control component, the control component is electrically connected to the liquid level sensor and four solenoid valves, the liquid level sensor is used to detect whether the dual-purpose airspeed measuring device for water and air is in contact with water; when the control component obtains that the dual-purpose airspeed measuring device for water and air has separated from the water and entered the air based on information from the liquid level sensor, the control component controls the four solenoid valves to open.

[0010] Optionally, the airspeed measuring device for water and air includes a shell, the airspeed meter sensing element, four solenoid valves, and a control assembly are all arranged in the shell, and the liquid level sensor is fixed to the shell. Preferably, the airspeed measuring device for water and air includes two air pipe quick plug-ins, both of which are fixed to the shell; the static pressure pipe includes a first static pressure pipe and a second static pressure pipe, the first static pressure pipe and the second static pressure pipe are connected by an air pipe quick plug-in, the first static pressure pipe extends to the first channel, and the second static pressure pipe extends to the air source; the dynamic pressure pipe includes a first dynamic pressure pipe and a second dynamic pressure pipe, the first dynamic pressure pipe and the second dynamic pressure pipe are connected by another air pipe quick plug-in, the first dynamic pressure pipe extends to the second channel, and the second dynamic pressure pipe extends to the air source. Optionally, the airspeed measuring device for water and air includes a three-way pipe, and the air source is connected to the second static pressure pipe and the second dynamic pressure pipe through the three-way pipe.

[0011] Specifically, the gas source is provided by an air pump or a gas cylinder. Preferably, the highest height of the first channel and the first static pressure tube is less than or equal to the height of the airspeed meter sensing element, and the highest height of the second channel and the first dynamic pressure tube is less than or equal to the height of the airspeed meter sensing element.

[0012] Features and advantages of the present disclosure include:

[0013] The airspeed measuring device for dual-purpose water and air disclosed in the present invention has multiple states, namely, a measuring state, a protective state and a purging state. When the airspeed measuring device for dual-purpose water and air is flying in the air, the airspeed measuring device for dual-purpose water and air is in a measuring state and can measure the flight speed; when the airspeed measuring device for dual-purpose water and air is entering the water, the airspeed measuring device for dual-purpose water and air is in a protective state to prevent water from contacting the precision components of the airspeed measuring device for dual-purpose water and air, such as the airspeed meter sensing element, to avoid damage to the precision components; when the airspeed measuring device for dual-purpose water and air enters the air after exiting the water, the airspeed measuring device for dual-purpose water and air first enters a purging state, and then re-enters the measuring state after the accumulated water in the airspeed measuring device for dual-purpose water and air is discharged. The airspeed measuring device for dual-purpose water and air disclosed in the present invention realizes multiple states of the airspeed measuring device for dual-purpose water and air in different use environments by arranging a first closing component and a second closing component on the static pressure channel and the dynamic pressure channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0015] Figure 1 A schematic top view of a water-air dual-purpose airspeed measuring device disclosed in the present invention is shown;

[0016] Figure 2 Shows Figure 1 A three-dimensional schematic diagram of the water-air dual-purpose airspeed measuring device, wherein the casing is removed;

[0017] Figure 3 A schematic top view of another water-air dual-purpose airspeed measuring device disclosed in the present invention is shown;

[0018] Figure 4 A schematic diagram showing the water-air dual-purpose airspeed measuring device of the present invention in a measuring state;

[0019] Figure 5 A schematic diagram showing the airspeed measuring device for water and air of the present invention in a protection state is shown;

[0020] Figure 6 A schematic diagram showing the water-air dual-purpose airspeed measuring device of the present invention in a purging state is shown.

[0021] Description of reference numerals:

[0022] 100-water-air dual-purpose airspeed measuring device, 101-airspeed meter sensing element, 102-liquid level sensor, 103-control component, 104-housing, 105-power supply;

[0023] 10- airspeed tube, 12- static pressure port, 14- dynamic pressure port, 16- bracket, 22- static pressure tube, 24- dynamic pressure tube, 26- three-way tube, 28- air pipe quick plug;

[0024] 30 - first closing assembly, 32 - first solenoid valve, 34 - second solenoid valve;

[0025] 40 - second closing assembly, 42 - third solenoid valve, 44 - fourth solenoid valve;

[0026] 50-air pump, 52-air inlet, 54-air outlet;

[0027] 60-gas cylinders. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0029] The present disclosure provides a dual-purpose airspeed measuring device 100 for water and air, which can be used to measure the flight speed of a dual-purpose airspeed aircraft in the air. The dual-purpose airspeed measuring device for water and air has a measuring state, a protection state and a purge state. When the dual-purpose airspeed aircraft is flying in the air, the dual-purpose airspeed measuring device for water and air is in a measuring state and can measure the flight speed; when the dual-purpose airspeed aircraft enters the water, the dual-purpose airspeed measuring device for water and air is in a protection state to prevent water from contacting the precision components of the dual-purpose airspeed measuring device for water and air, such as the airspeed meter sensing element, to avoid damage to the precision components; when the dual-purpose airspeed aircraft enters the air after exiting the water, the dual-purpose airspeed measuring device for water and air first enters the purge state, and then re-enters the measurement state after the accumulated water in the dual-purpose airspeed measuring device is discharged.

[0030] The airspeed measuring device 100 for both water and air includes a static pressure channel, a dynamic pressure channel, an airspeed meter sensing element 101, a first closed component 30 and a second closed component 40. A static pressure port is provided at one end of the static pressure channel, and the static pressure port is connected to the static pressure channel; a dynamic pressure port is provided at one end of the dynamic pressure channel, and the dynamic pressure port is connected to the dynamic pressure channel. The airspeed meter sensing element 101 is arranged in the static pressure channel and the dynamic pressure channel, measures the static pressure value of the static pressure channel and the dynamic pressure value of the dynamic pressure channel, and then converts the pressure difference between the dynamic pressure value and the static pressure value into airspeed, that is, the airspeed meter sensing element 101 is used to sense airspeed. The first closed component 30 and the second closed component 40 are both coupled to the static pressure channel and the dynamic pressure channel, and the first closed component 30 and the second closed component 40 are respectively located on both sides of the airspeed meter sensing element 101, and the first closed component 30 is close to the static pressure port and the dynamic pressure port. Alternatively, the airspeed meter sensing element 101 may only include a static pressure sensor and a dynamic pressure sensor, which may be connected to the amphibious aircraft, and the detected static pressure value and dynamic pressure value may be transmitted to the amphibious aircraft to calculate the airspeed.

[0031] When the airspeed measuring device 100 for water and air is in the measuring state, the first closing component 30 is opened, the second closing component 40 is closed, the static pressure channel between the static pressure port and the second closing component 40 is unobstructed, the dynamic pressure channel between the dynamic pressure port and the second closing component 40 is unobstructed, and the airspeed meter sensing element 101 can measure the air pressure in the static pressure channel and the dynamic pressure channel. When the airspeed measuring device 100 for water and air is in the protection state, the first closing component 30 is closed, the dynamic pressure channel between the dynamic pressure port and the airspeed meter sensing element 101 is cut off, and water is prevented from entering the airspeed meter sensing element 101. At this time, the second closing component 40 can be opened or closed, which is not specifically limited here. In a preferred embodiment, the second closing component 40 remains closed, which can reduce the driving action of the second closing component 40, and can also prevent water from continuing to flow along the static pressure channel and the dynamic pressure channel and contacting the device connected to the static pressure channel or the dynamic pressure channel when the first closing component 30 is damaged. When in the purge state, the first closing component 30 and the second closing component 40 are both opened, so that the static pressure channel and the dynamic pressure channel remain unobstructed, which will be conducive to draining the accumulated water in the static pressure channel and the dynamic pressure channel. At this time, the static pressure channel and the dynamic pressure channel can be fed with the purge gas flowing from the second closing component to the static pressure port and the dynamic pressure port to drain the accumulated water in the static pressure channel and the dynamic pressure channel.

[0032] In some embodiments, the purge gas comes from an external independent gas source, for example, the gas source comes from a dual-purpose air-water vehicle, and the static pressure channel and the dynamic pressure channel are connected to the gas source. In some embodiments, the dual-purpose air-water airspeed measuring device further includes an air source, which is connected to the static pressure channel and the dynamic pressure channel and is disposed on a side of the second closed component away from the airspeed meter sensing element. The gas source can be provided by an air pump or a gas cylinder.

[0033] Specifically, in some embodiments, the first closing component has two actuators, and the two actuators are at least partially arranged inside the static pressure channel and the dynamic pressure channel, respectively. By driving the two actuators to move, the static pressure channel can be blocked or kept unobstructed. For example, the first closing component is configured as two controllable valves, such as air-controlled valves or solenoid valves. Similarly, the second closing component is also the same. In other embodiments, the first closing component has an actuator, which is arranged outside the static pressure channel and the dynamic pressure channel, and the actuator is driven to move, so that the static pressure channel and the dynamic pressure channel are compressed and blocked. For example, the static pressure channel and the dynamic pressure channel are partially defined by a compressible pipe, and the first closing component is configured as a clamp, which is arranged outside the two pipes and can clamp the two pipes. Similarly, the second closing component is also the same. Alternatively, the first closing component may have two actuators, for example, the first closing component is configured as two clamps, each clamp clamping a pipe.

[0034] Specifically, see Figure 1 , Figure 2 The airspeed measuring device 100 for both water and air includes a pitot tube 10, a static pressure tube 22, and a dynamic pressure tube 24. The pitot tube 10 includes a static pressure port 12, a dynamic pressure port 14, a first channel, and a second channel. The first channel is connected to the static pressure port 12, the second channel is connected to the dynamic pressure port 14, and the first channel and the second channel are independently arranged. More specifically, the static pressure port 12 is arranged at one end of the first channel, the other end of the first channel is connected to the static pressure tube 22, and the static pressure channel includes the channel defined by the first channel and the static pressure tube 22; the dynamic pressure port 14 is arranged at one end of the second channel, the other end of the second channel is connected to the dynamic pressure tube 24, and the dynamic pressure channel includes the channel defined by the second channel and the dynamic pressure tube 24. The first closing component 30, the second closing component 40, and the airspeed meter sensing element 101 are all arranged in the static pressure tube 22 and the dynamic pressure tube 24, and the air source enters the static pressure channel and the dynamic pressure channel through the static pressure tube 22 and the dynamic pressure tube 24, respectively. Optionally, the dynamic pressure port 14 is disposed at one end of the pitot tube 10 , and the static pressure port 12 is disposed at an outer periphery of the pitot tube 10 .

[0035] Specifically, in Figure 1 , Figure 2In the illustrated embodiment, the first closing assembly 30 includes a first solenoid valve 32 and a second solenoid valve 34 , and the second closing assembly includes a third solenoid valve 42 and a fourth solenoid valve 44 . Among them, the first solenoid valve 32 is arranged on the static pressure channel between the pitot tube 10 and the airspeed meter sensing element 101. In some embodiments, the first solenoid valve 32 is connected to the static pressure pipe line between the pitot tube 10 and the airspeed meter sensing element 101. The third solenoid valve 42 is arranged on the static pressure channel between the airspeed meter sensing element 101 and the air source. In some embodiments, the third solenoid valve 42 is connected to the static pressure pipe line between the airspeed meter sensing element 101 and the air source; the second solenoid valve 34 is arranged on the dynamic pressure channel between the pitot tube 10 and the airspeed meter sensing element 101. In some embodiments, the second solenoid valve 34 is connected to the dynamic pressure pipe line between the pitot tube 10 and the airspeed meter sensing element 101. The fourth solenoid valve 44 is arranged on the dynamic pressure channel between the airspeed meter sensing element 101 and the air source. In some embodiments, the fourth solenoid valve 44 is connected to the dynamic pressure pipe line between the airspeed meter sensing element 101 and the air source. The solenoid valve consists of a core valve (i.e., the actuator) and an electromagnet. The electromagnet is energized or de-energized to move the core valve, thereby opening or closing the solenoid valve. When the solenoid valve is open, the channels on both sides of the core valve remain connected; when the core valve is closed, the channels on both sides of the core valve are blocked.

[0036] Optionally, the airspeed measuring device 100 for water and air may include a control component 103, which is electrically connected to four solenoid valves, and the control component 103 may control the four solenoid valves to open or close. In some embodiments, when the airspeed measuring device 100 for water and air is working, the control component 103 controls the first solenoid valve 32 and the second solenoid valve 34 to open or close synchronously, and the control component 103 may control the third solenoid valve 42 and the fourth solenoid valve 44 to open or close synchronously. Further, the airspeed measuring device 100 for water and air may include a liquid level sensor 102, and the control component 103 is electrically connected to the liquid level sensor 102. The liquid level sensor 102 is used to sense whether the airspeed measuring device 100 for water and air is in water, and the control component 103 may control the solenoid valve to open or close according to the information of the liquid level sensor 102. Specifically, for example, when the control component 103 determines based on the information of the liquid level sensor 102 that the dual-purpose airspeed measuring device 100 leaves the water and enters the air, the control component 103 controls the four solenoid valves to open so as to discharge the accumulated water in the pitot tube. Optionally, the height of the liquid level sensor 102 is lower than the height of the pitot tube, so that the liquid level sensor 102 contacts the water earlier than the pitot tube. After the control component 103 detects that the liquid level sensor 102 enters the water, it controls the first solenoid valve 32 and the second solenoid valve 34 to close.

[0037] Specifically, the airspeed measuring device 100 for water and air includes a shell 104. The shell 104 can be constructed with a structure having a cavity inside surrounded by side walls and a bottom wall, and the shape of the shell 104 is not limited here. The airspeed meter sensing element 101, four solenoid valves, and the control component 103 are all arranged in the inner cavity of the shell 104, the liquid level sensor 102 is fixed to the side wall of the shell 104 near the bottom wall, and the static pressure tube 22 and the dynamic pressure tube 24 extend from the outside of the shell 104 into the inner cavity of the shell 104. In some embodiments, the shell 104 is constructed as a rectangular shell with an opening at the top, see Figure 1 The housing 104 further includes a cover plate (not shown in the figure), which is detachably connected to the rectangular housing with an upper opening, so that the housing 104 forms a closed rectangular housing, which is conducive to preventing water from entering the interior of the housing 104. Preferably, a labyrinth seal design is adopted between the housing 104 and the cover plate to enhance the sealing effect between the two.

[0038] In some embodiments, in order to enhance the sealing between the static pressure tube 22 and the dynamic pressure tube 24 and the side wall of the housing 104, the water-air dual-purpose airspeed measuring device 100 further includes two air pipe fast plug-ins 28, both of which are fixed to the side wall of the housing. The static pressure tube 22 includes a first static pressure tube and a second static pressure tube, which are connected by an air pipe fast plug-in 28, wherein the first static pressure tube extends to the first channel and the second static pressure tube extends to the air source. The dynamic pressure tube 24 includes a first dynamic pressure tube and a second dynamic pressure tube, which are connected by another air pipe fast plug-in 28, wherein the first dynamic pressure tube extends to the second channel and the second dynamic pressure tube extends to the air source. In particular, taking the height of the airspeed meter sensing element 101 as the reference height, the highest height of the first channel and the first static pressure tube is less than or equal to the height of the airspeed meter sensing element 101, and the highest height of the second channel and the first dynamic pressure tube is less than or equal to the height of the airspeed meter sensing element 101. The airspeed meter sensing element 101 is arranged higher than the first channel and the first static pressure tube, and also higher than the second channel and the first dynamic pressure tube, so that when the first solenoid valve 32 and the second solenoid valve 34 are opened, accumulated water is prevented from flowing along the second static pressure tube and the second dynamic pressure tube to contact the airspeed meter sensing element 101, thereby preventing accumulated water from damaging the airspeed meter sensing element 101.

[0039] Specifically, in some embodiments, the airspeed measuring device 100 for water and air includes an air pump 50, which is disposed in the inner cavity of the housing and is used to provide purge gas for the static pressure channel and the dynamic pressure channel. The air pump 50 includes an air inlet 52 and an air outlet 54, the air inlet 52 is connected to the atmosphere, and the air outlet 54 is connected to the second static pressure pipe and the second dynamic pressure pipe at one end away from the air pipe quick plug 28. Preferably, the airspeed measuring device 100 for water and air includes a tee pipe 26, and the air outlet 54 of the air pump 50 is connected to the second static pressure pipe and the second dynamic pressure pipe through the tee pipe 26.

[0040] Alternatively, see Figure 3 In some embodiments, the gas source can be provided by a gas container. The water-air dual-purpose airspeed measuring device 100 includes a gas container, in which compressed gas is contained, and the gas container is used to provide purge gas for the static pressure channel and the dynamic pressure channel. Specifically, the gas container can be an air bag or a gas cylinder 60. The following is a detailed introduction taking the gas container as a gas cylinder 60 as an example. The bottle mouth of the gas cylinder 60 is connected to one end of the three-way pipe 26. In some embodiments, in order to save the internal space of the shell 104, the gas cylinder 60 is arranged on the outside of the shell 104, and the bottle mouth of the gas cylinder 60 is configured as an external threaded tube, which is detachably and sealably connected to the side wall of the shell 104. In order to enhance the sealing performance, a sealing ring can also be provided between the external threaded tube and the side wall. The gas cylinder 60 and the two air pipe quick plugs 28 are respectively arranged on opposite sides of the shell 104.

[0041] Continue to see Figure 3 In some embodiments, the airspeed measuring device 100 for water and air also includes a power supply 105, which provides power to the four solenoid valves, the airspeed meter sensing element 101, the control component 103, etc. Specifically, the power supply 105 is disposed in the inner cavity of the housing 104. When the air source is provided by an air pump, the power supply 105 also provides power to the air pump 50.

[0042] It should be noted that, in some embodiments, the two actuators of the first closing assembly can be disposed in the pitot tube, and the two actuators of the second closing assembly can also be disposed in the pitot tube, which is not specifically limited here. The airspeed meter sensing element includes a static pressure sensor and a dynamic pressure sensor, and the static pressure sensor and the dynamic pressure sensor are also disposed in the pitot tube.

[0043] The airspeed measuring device 100 is installed on an airspeed measuring device and is used to measure the airspeed when flying in the air. The airspeed measuring device 100 has a waterproof function when underwater and a drainage function when out of water. Figures 4 to 6 The working principle of the water-air dual-purpose airspeed measuring device 100 is schematically illustrated, wherein: Figures 4 to 6 The water-air dual-purpose airspeed measuring device 100 is shown in the measuring state, the protection state and the purging state respectively. The spotted area in the figure indicates the range of air and other information, and the wave area indicates the range of water and other information.

[0044] See also Figure 4When the amphibious aircraft takes off, the control component 103 controls the first solenoid valve 32 and the second solenoid valve 34 to open, and controls the third solenoid valve 42 and the fourth solenoid valve 44 to close, so that the static pressure channel between the static pressure port and the third solenoid valve 42 remains unobstructed, and the dynamic pressure channel between the dynamic pressure port and the fourth solenoid valve 44 remains unobstructed. Some air enters the first channel of the pitot tube 10 from the static pressure port, and then enters the static pressure tube 22, forming a static pressure measurement environment; some air enters the second channel of the pitot tube 10 from the dynamic pressure port, and then enters the dynamic pressure tube 24, forming a dynamic pressure measurement environment. Since the dynamic pressure and static pressure at the airspeed meter sensing element 101 are stable, the airspeed meter sensing element can capture and calculate the pressure difference between the static pressure and the dynamic pressure in the air, thereby accurately measuring and feeding back the real-time airspeed of the aircraft. At this time, when the air source is provided by the air pump, the air pump is in a stopped state. When the gas source is provided by a gas cylinder, the gas cylinder is connected to the static pressure pipe and the dynamic pressure pipe between the third solenoid valve and the fourth solenoid valve. The third solenoid valve can prevent the gas from the gas cylinder from entering the static pressure pipe located on the other side of the third solenoid valve, and the fourth solenoid valve can prevent the gas from the gas cylinder from entering the dynamic pressure pipe located on the other side of the fourth solenoid valve.

[0045] See also Figure 5 When the dual-purpose air-water aircraft is ready to enter the water, the control component 103 can obtain the information that it is about to enter the water from the flight control system, or the control component 103 can obtain the information that the dual-purpose air-water airspeed measuring device is entering the water from the liquid level sensor. The control component 103 controls the first solenoid valve 32 and the second solenoid valve 34 to close, and the third solenoid valve 42 and the fourth solenoid valve 44 continue to remain closed. At this time, when the air source is provided by the air pump, the air pump is in a stopped state; when the air source is provided by the gas cylinder, the gas cylinder and the static pressure pipe and the dynamic pressure pipe between the third solenoid valve 42 and the fourth solenoid valve 44 remain connected. After the dual-purpose air-water aircraft enters the water, water enters the static pressure channel from the static pressure port 12, and the closed first solenoid valve 32 prevents it from flowing into the static pressure channel after the first solenoid valve 32. Water enters the dynamic pressure channel from the dynamic pressure port 14, and the closed second solenoid valve 34 prevents it from flowing into the dynamic pressure channel after the second solenoid valve 34. Therefore, by closing the first solenoid valve 32 and the second solenoid valve 34, water can be effectively isolated from intruding into the interior, thereby achieving a waterproof function.

[0046] See also Figure 6When the dual-purpose air-water aircraft leaves the water and enters the air, the control component 103 determines that the static pressure channel and the dynamic pressure channel are in the air suitable for drainage based on the information provided by the flight control system or the liquid level sensor, and the control component 103 controls the four solenoid valves to open. When the air source is provided by the air pump, the control component 103 also controls the air pump to start, and the air pump provides a purge airflow for the dual-purpose air-water airspeed measuring device 100. The airflow flows out from the air pump or the air cylinder, flows along the three-way pipe to the static pressure channel and the dynamic pressure channel, and blows out the residual water in the airspeed tube, thereby realizing the drainage function. After the drainage is completed, the control component 103 controls the third solenoid valve 42, the fourth solenoid valve 44, and the air pump to close, and the first solenoid valve 32 and the second solenoid valve 34 remain open, and the dual-purpose air-water airspeed measuring device 100 re-enters. Figure 4 The measurement status is shown.

[0047] The above are only several embodiments of the present disclosure. Those skilled in the art may make various changes or modifications to the embodiments of the present disclosure based on the contents disclosed in the application documents without departing from the spirit and scope of the present disclosure.

Claims

1. A dual-purpose airspeed measuring device for water and air, characterized in that: include: A static pressure port and a static pressure channel, wherein the static pressure port is in communication with the static pressure channel; a dynamic pressure port and a dynamic pressure channel, wherein the dynamic pressure port is in communication with the dynamic pressure channel; An airspeed meter sensing element, the airspeed meter sensing element is arranged in the static pressure channel and the dynamic pressure channel, and is used to sense the airspeed; a first closing component and a second closing component, the static pressure channel and the dynamic pressure channel are both provided with the first closing component and the second closing component, the first closing component and the second closing component are respectively located on both sides of the airspeed meter sensing element, and the first closing component is close to the static pressure port and the dynamic pressure port; as well as an air source, the air source being in communication with the static pressure channel and the dynamic pressure channel and being disposed on a side of the second closing component away from the airspeed meter sensing element; Wherein, the water-air dual-purpose airspeed measuring device has a measuring state, a protection state and a purge state; When in the measuring state, the first closing component is open and the second closing component is closed; when in the protecting state, the first closing component is closed; when in the purging state, both the first closing component and the second closing component are open.

2. The water-air dual-purpose airspeed measuring device according to claim 1, characterized in that: The water-air dual-purpose airspeed measuring device comprises: A static pressure pipe and a dynamic pressure pipe, wherein the static pressure passage includes a passage defined by the static pressure pipe and a first passage, and the dynamic pressure passage includes a passage defined by the dynamic pressure pipe and a second passage; A pitot tube, wherein the static pressure port, the dynamic pressure port, the first channel, and the second channel are all arranged on the pitot tube, the static pressure port is communicated with the first channel, and the dynamic pressure port is communicated with the second channel; Wherein, the first closing component, the second closing component and the airspeed meter sensing element are all arranged in the static pressure pipe and the dynamic pressure pipe, and the air source enters the static pressure channel and the dynamic pressure channel through the static pressure pipe and the dynamic pressure pipe respectively.

3. The water-air dual-purpose airspeed measuring device according to claim 2, characterized in that: The first closing component includes a first solenoid valve and a second solenoid valve, and the second closing component includes a third solenoid valve and a fourth solenoid valve. The first solenoid valve is arranged on a static pressure pipe between the pitot tube and the airspeed meter sensing element, the third solenoid valve is arranged on a static pressure pipe between the airspeed meter sensing element and the air source, the second solenoid valve is arranged on a dynamic pressure pipe between the pitot tube and the airspeed meter sensing element, and the fourth solenoid valve is arranged on a dynamic pressure pipe between the airspeed meter sensing element and the air source.

4. The water-air dual-purpose airspeed measuring device according to claim 3, characterized in that: The dual-purpose airspeed measuring device for water and air includes a liquid level sensor and a control component. The control component is electrically connected to the liquid level sensor and four solenoid valves. The liquid level sensor is used to detect whether the dual-purpose airspeed measuring device for water and air is in contact with water. When the control component obtains, based on information from the liquid level sensor, that the dual-purpose airspeed measuring device for water and air has separated from the water and entered the air, the control component controls the four solenoid valves to open.

5. The water-air dual-purpose airspeed measuring device according to claim 4, characterized in that: The water-to-air dual-purpose airspeed measuring device comprises a shell, the airspeed meter sensing element, the four solenoid valves, and the control assembly are all arranged in the shell, and the liquid level sensor is fixed to the shell.

6. The water-air dual-purpose airspeed measuring device according to claim 5, characterized in that: The water-air dual-purpose airspeed measuring device comprises two air pipe quick plug-ins, and the two air pipe quick plug-ins are both fixed to the housing; The static pressure pipe comprises a first static pressure pipe and a second static pressure pipe, the first static pressure pipe and the second static pressure pipe are connected via an air pipe quick plug-in, the first static pressure pipe extends to the first channel, and the second static pressure pipe extends to the air source; The dynamic pressure pipe includes a first dynamic pressure pipe and a second dynamic pressure pipe, the first dynamic pressure pipe and the second dynamic pressure pipe are connected by another air pipe quick plug-in, the first dynamic pressure pipe extends to the second channel, and the second dynamic pressure pipe extends to the air source.

7. The water-air dual-purpose airspeed measuring device according to claim 6, characterized in that: The water-air dual-purpose airspeed measuring device comprises a three-way pipe, and the air source is connected to the second static pressure pipe and the second dynamic pressure pipe through the three-way pipe.

8. The water-air dual-purpose airspeed measuring device according to claim 6 or 7, characterized in that: The gas source is provided by an air pump or a gas cylinder.

9. The water-air dual-purpose airspeed measuring device according to claim 8, characterized in that: The highest heights of the first channel and the first static pressure tube are less than or equal to the height of the airspeed meter sensing element, and the highest heights of the second channel and the first dynamic pressure tube are less than or equal to the height of the airspeed meter sensing element.

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