Cross-inflation wide-body helicopter emergency floating device and helicopter

Abstract

The invention discloses a crossed inflation wide-body helicopter emergency floating device and a helicopter, and relates to the field of emergency buoys. The emergency floating device comprises at least one pair of front buoy packets, at least one pair of rear buoy packets, at least four immersion sensors for sending out immersion signals, at least two front air sources, at least two rear air sources and at least one controller, wherein front buoys and rear buoys are respectively arranged in the front buoy packets and the rear buoy packets; the front air source and the rear air source are connected with a front cross inflation pipe and a rear cross inflation pipe through pipelines provided with air source device release valves respectively, and the front cross inflation pipe and the rear cross inflation pipe are connected with the front buoys and the rear buoys respectively. The controller controls the air source device to be communicated with the release valve when receiving signals of the at least two immersion sensors. The cross-inflation wide-body helicopter emergency floating device and the helicopter have the advantages that unbalance caused by the fact that a single air source is damaged and only can inflate the buoy on one side is avoided through the cross-inflation function, and the cross-inflation wide-body helicopter emergency floating device and the helicopter have the advantages of being high in dampening and floating stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of emergency floats, in particular, to a cross-inflatable wide-body helicopter emergency flotation device and a helicopter. BACKGROUND

[0002] Helicopters are widely used in escort, transportation, patrol, rescue and other fields. As the frequency of helicopters performing water tasks is increasing, the environment, especially the sea environment, is becoming more and more complex and severe, and the demand for large-load wide-body helicopters is becoming more and more urgent. The emergency flotation lifesaving equipment that can provide water flight safety and water emergency landing lifesaving capability for large wide-body helicopters is particularly important.

[0003] The currently applied helicopter emergency flotation device generally adopts a corresponding gas supply mode, using one gas source device to inflate one float or two floats. When a single gas source fails, there is a risk of asymmetric inflation, and the flotation stability will decrease, which is difficult to meet the helicopter emergency flotation demand. SUMMARY

[0004] The purpose of the present application is to provide a cross-inflatable wide-body helicopter emergency flotation device and a helicopter, which avoids the imbalance caused by only inflating one side of the float when a single gas source is damaged through the cross-inflation function, and has the advantages of high water landing and flotation stability.

[0005] The present application is implemented as follows: The present application provides a cross-inflatable wide-body helicopter emergency flotation device, which comprises: At least one pair of front float packages connected to the bottom of the cockpit on both sides of the helicopter, each front float package being provided with a front float connected to the helicopter; At least one pair of rear float packages connected to the outside of the short wings on both sides of the helicopter, each rear float package being provided with a rear float; At least four water immersion sensors arranged at intervals at the bottom of the helicopter for sending signals after immersion; At least two front gas sources connected to the front cross-inflation pipe through the pipeline provided with the gas source device release valve, the front cross-inflation pipe being connected to each front float; At least two rear gas sources connected to the rear cross-inflation pipe through the pipeline provided with the gas source device release valve, the rear cross-inflation pipe being connected to each rear float; At least one controller for controlling the communication of each gas source device release valve when receiving the signals sent by at least two water immersion sensors.

[0006] In some optional embodiments, a front inflation cavity and a rear inflation cavity are further included, the front gas source being connected to the front cross-inflation pipe through the front inflation cavity, and the rear gas source being connected to the rear cross-inflation pipe through the rear inflation cavity.

[0007] In some alternative embodiments, the rear buoy package comprises a flexible package wrapping the rear buoy and a constant force breaking rope connecting the package of the flexible package.

[0008] In some alternative embodiments, the rear buoy package comprises a rear buoy cabin for accommodating the flexible package and a rear buoy cabin cover detachably connected to the top of the rear buoy cabin, the rear buoy cabin cover being pushed to detach from the rear buoy cabin in a preset direction when the rear buoy is inflated.

[0009] In some alternative embodiments, the rear buoy cabin and the rear buoy cabin cover are detachably connected by a plurality of pairs of rubber compression seats and fastening screws respectively passing through each pair of rubber compression seats, each pair of rubber compression seats being arranged circumferentially and spaced apart on the rear buoy cabin.

[0010] In some alternative embodiments, the rear buoy package comprises a first nylon belt and a second nylon belt, one end of each of the first and second nylon belts being connected to the rear buoy cabin, the other end of each of the first and second nylon belts being connected by a hook surface and a nap surface to fix the flexible package to the rear buoy cabin.

[0011] In some alternative embodiments, each gas source device release valve is connected with a temperature sensor, a pressure sensor, a temperature-pressure calibration module and a communication fault reporting module, the temperature sensor and the pressure sensor being used to detect the temperature and pressure of the gas in the corresponding front gas source or rear gas source and transmit to the temperature-pressure calibration module; the temperature-pressure calibration module is used to receive the temperature and pressure of the gas to calculate the temperature-pressure parameter and compare it with the preset temperature-pressure curve and send a signal to the communication fault reporting module when the calculated temperature-pressure parameter exceeds the preset temperature-pressure curve range, the communication fault reporting module being used to output a pressure fault signal.

[0012] In some alternative embodiments, the front buoy package further comprises support buoys connected with the helicopter, the front buoy being connected to the support buoys, and the front cross-inflatable tubes being connected to each of the support buoys.

[0013] In some alternative embodiments, the cockpit of the helicopter is recessed on both sides of the bottom to form buoy accommodating grooves for accommodating the front buoy package.

[0014] The application also provides a helicopter comprising the above-mentioned cross-inflatable wide-body helicopter emergency floating device.

[0015] The beneficial effects of the present application are: the cross-inflating wide-body helicopter emergency floating device provided by the embodiments of the present application can realize the cross-inflating function, avoid the imbalance caused by the single gas source damage which can only inflate one side of the float, and has the advantages of high water landing and floating stability. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0017] Figure 1 The structure schematic diagram of the cross-inflating wide-body helicopter emergency floating device provided by the embodiments of the present application when the emergency floating device is opened after being installed on the helicopter; Figure 2 The structure schematic diagram of the cross-inflating wide-body helicopter emergency floating device provided by the embodiments of the present application from the first perspective after being installed on the helicopter; Figure 3 The structure schematic diagram of the cross-inflating wide-body helicopter emergency floating device provided by the embodiments of the present application from the second perspective after being installed on the helicopter; Figure 4 The structure schematic diagram of the neutral package and the constant force breaking rope in the cross-inflating wide-body helicopter emergency floating device provided by the embodiments of the present application; Figure 5 The structure schematic diagram of the flexible package connected and sealed by the rear float cabin body and the rear float cabin cover in the cross-inflating wide-body helicopter emergency floating device provided by the embodiments of the present application; Figure 6 The cross-sectional view of the cross-section of the connection between the rear float cabin body and the rear float cabin cover in the cross-inflating wide-body helicopter emergency floating device provided by the embodiments of the present application; Figure 7 The structure schematic diagram of the cross-inflating wide-body helicopter emergency floating device provided by the embodiments of the present application; Figure 6 The local enlarged structure schematic diagram of the position A; Figure 8 The structure schematic diagram of the gas source device release valve connected with the front gas source in the cross-inflating wide-body helicopter emergency floating device provided by the embodiments of the present application; Figure 9The schematic diagram of the upper limit of temperature pressure calibration and the lower limit of temperature pressure calibration in the cross-inflating wide-body helicopter emergency floating method provided by the embodiment of the present application.

[0018] In the figure: 100, front buoy package; 110, support buoy; 120, front buoy; 200, rear buoy package; 210, rear buoy; 220, flexible package; 230, constant force breaking rope; 240, rear buoy cabin body; 250, rear buoy cabin cover; 260, rubber pressing seat; 270, fastening screw; 280, first nylon belt; 290, second nylon belt; 300, water immersion sensor; 310, front air source; 311, rear air source; 320, air source device release valve; 321, temperature sensor; 322, pressure sensor; 323, temperature pressure calibration module; 324, communication fault reporting module; 330, front cross-inflating pipe; 340, rear cross-inflating pipe; 350, front inflating cavity; 360, rear inflating cavity; 400, controller; 500, helicopter; 510, buoy containing groove. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts, fall within the scope of protection of the present application.

[0021] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0022] In the description of the application, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0024] In the description of the application, it also needs to be explained that unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0025] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "over", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The "under", "below" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0026] The features and performance of the cross-inflatable wide-body helicopter emergency flotation device and the helicopter of the present application are further described in detail below in conjunction with the embodiments.

[0027] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, the embodiment of the present application provides a cross-inflatable wide-body helicopter emergency floating device, which comprises a pair of front buoy package 100, a pair of rear buoy package 200, four water immersion sensors 300, two front air sources 310, two rear air sources 311 and two controllers 400; the pair of front buoy package 100 is respectively connected to the buoy containing groove 510 on the bottom of the two sides of the helicopter 500 cabin, and the pair of rear buoy package 200 is respectively connected to the outside of the short wing on the two sides of the helicopter 500; each front buoy package 100 is provided with a support buoy 110 connected to the helicopter 500 and a front buoy 120 connected to the support buoy 110; each rear buoy package 200 is provided with a rear buoy 210; the four water immersion sensors 300 are arranged at the four corners of the bottom of the helicopter 500, and the water immersion sensor 300 is used to send a signal after being immersed in water; the two front air sources 310 are respectively connected to the front inflatable cavity 350 through the pipeline provided with the air source device release valve 320, and the front inflatable cavity 350 is respectively connected to each front buoy 120 and each support buoy 110 through the front cross-inflatable pipe 330; the two rear air sources 311 are respectively connected to the rear inflatable cavity 360 through the pipeline provided with the air source device release valve 320, and the rear inflatable cavity 360 is respectively connected to each rear buoy 210 through the rear cross-inflatable pipe 340; the controller 400 is used to control the communication of each air source device release valve 320 when receiving the signals sent by the two water immersion sensors 300 at the same time. In the embodiment, the inside of the front buoy 120 is isolated into three front compartments by polyurethane adhesive tape, the front cross-inflatable pipe 330 respectively communicates the three front compartments, the inside of the rear buoy 210 is isolated into four rear compartments by polyurethane adhesive tape, and the rear cross-inflatable pipe 340 respectively communicates the four rear compartments.

[0028] In the embodiment, the rear buoy package 200 comprises a flexible package 220 wrapping the rear buoy 210, a constant force breaking rope 230 connecting the package of the flexible package 220, a rear buoy cabin body 240 for accommodating the flexible package 220, a rear buoy cabin cover 250 detachably connected to the top of the rear buoy cabin body 240, and a first nylon belt 280 and a second nylon belt 290 connected to the bottom end of the rear buoy cabin body 240, wherein the other ends of the first nylon belt 280 and the second nylon belt 290 are respectively connected by the hook surface and the nap surface to fix the flexible package 220 to the rear buoy cabin body 240; the rear buoy cabin body 240 and the rear buoy cabin cover 250 are detachably connected by four pairs of rubber compression seats 260 and fastening screws 270 respectively penetrating through each pair of rubber compression seats 260, and the four pairs of rubber compression seats 260 are respectively arranged on the two sides of the two ends of the rear buoy cabin body 240, and each pair of rubber compression seats 260 is arranged on the side opposite to the rear buoy cabin cover 250 of the rear buoy cabin body 240; when the rear buoy 210 is inflated and expanded, the rear buoy cabin cover 250 is pushed to move to separate the fastening screw 270 from the rubber compression seat 260, and then the rear buoy cabin cover 250 is separated from the rear buoy cabin body 240 along the preset direction.

[0029] Each gas source device release valve 320 is connected with a temperature sensor 321, a pressure sensor 322, a temperature pressure calibration module 323 and a communication fault reporting module 324, the temperature sensor 321 and the pressure sensor 322 are respectively used for detecting the gas temperature and pressure in the front gas source 310 or the rear gas source 311 and transmitting to the temperature pressure calibration module 323; the temperature pressure calibration module 323 is used for receiving the temperature-pressure parameters calculated by the gas temperature and pressure, comparing with the preset temperature-pressure curve and sending a signal to the communication fault reporting module 324 when the calculated temperature-pressure parameters exceed the preset temperature-pressure curve range, and the communication fault reporting module 324 is used for outputting a pressure fault signal.

[0030] The application also provides an emergency floating method of the cross-inflatable wide-body helicopter, which is performed by using the cross-inflatable wide-body helicopter emergency floating device, and includes the following steps: Step one, installation of the cross-inflatable wide-body helicopter emergency floating device; two front gas sources 310, two rear gas sources 311, a container with a front inflatable cavity 350 and a rear inflatable cavity 360 are respectively fixed to the bottom front end and rear end of the helicopter, four water immersion sensors 300 are respectively fixed to the bottom four corners of the helicopter, two front gas sources 310 are respectively connected to the front inflatable cavity 350 through a pipeline provided with a gas source device release valve 320, two rear gas sources 311 are respectively connected to the rear inflatable cavity 360 through a pipeline provided with a gas source device release valve 320, the front inflatable cavity 350 is respectively connected to each front float 120 and each support float 110 through a front cross-inflatable pipe 330, the rear inflatable cavity 360 is respectively connected to each rear float 210 through a rear cross-inflatable pipe 340, the front float 120 and the support float 110 are respectively placed in the front float packaging 100, the front float 120 and the support float 110 are wrapped with the flexible packaging 220 and then connected to the fixed force breaking rope 230, then the flexible packaging 220 is placed in the rear float cabin body 240, the first nylon belt 280 and the second nylon belt 290 connected to the bottom of the rear float cabin body 240 are wound on the flexible packaging 220 and fixed by using the hook surface and the nap surface connection, the rear float cabin cover 250 is placed on the top of the rear float cabin body 240 and then connected and fixed by using four pairs of rubber pressing seats 260 respectively arranged on the opposite sides of the rear float cabin body 240 and the rear float cabin cover 250 and the fastening screws 270 respectively connected to each pair of rubber pressing seats 260, two front float packagings 100 are respectively connected to the float accommodating grooves 510 on the two sides of the bottom of the helicopter 500 cabin, two rear float cabin bodies 240 are fixed to the outside of the short wings on the two sides of the helicopter 500, and two controllers 400 are respectively electrically connected to each water immersion sensor 300 and each gas source device release valve 320.

[0031] Step two, when the cross-inflatable wide-body helicopter emergency flotation device needs to be manually started, the operator transmits the starting signal to the two controllers 400 by pressing the main / secondary total distance lever switch, and the two controllers 400 control the release valve 320 of each gas source device to release the high-pressure gas in each front gas source 310 and each rear gas source 311, respectively. The high-pressure gas in the two front gas sources 310 enters the front inflatable cavity 350 through the pipeline and then enters each front float 120 and each support float 110 through the front cross-inflatable tube 330, and the high-pressure gas in the two rear gas sources 311 enters the rear inflatable cavity 360 through the pipeline and then enters each rear float 210 through the rear cross-inflatable tube 340, respectively, to realize cross-inflation. Even if a single front gas source 310 or a single rear gas source 311 fails, the two front float packages 100 and the two rear float packages 200 can still be inflated symmetrically, ensuring that the floats on both sides of the helicopter are inflated synchronously and stably, and improving the stability of emergency rescue.

[0032] When the high-pressure gas is introduced into each rear float 210 through the rear cross-inflatable tube 340, the rear float 210 inflates and expands, and the expansion force acts on the flexible package 220 and the constant force breaking rope 230. When the expansion force is greater than the set force of the constant force breaking rope 230, the constant force breaking rope 230 breaks, and the constraint of the flexible package 220 is released. When the expansion force is greater than the force between the first nylon belt 280 and the second nylon belt 290 connected by the hook surface and the nap surface, the first nylon belt 280 and the second nylon belt 290 are separated and disconnected under stress. When the expansion force is greater than the connection force between the four pairs of rubber compression seats 260 and the fastening screws 270, the rear float hatch cover 250 moves along the guide track of the four fastening screws 270 and expands to separate from the rear float cabin body 240, releasing the inflated rear float 210, improving the reliability of the constraint, and realizing stable and reliable constraint and safety under aerodynamic load. The support float 110, the front float 120, and the rear float 210 are inflated and formed around the helicopter 500, and the front float 120 and the rear float 210 generate buoyancy to transfer lifting force and righting force to the helicopter 500 during the helicopter 500's landing on water and floating process, keeping the helicopter 500 stable and floating.

[0033] Step three, when the helicopter 500 lands on the water surface, the water immersion sensor 300 connected to the bottom of the helicopter 500 enters the water, and the water immersion sensor 300 transmits the water immersion signal to the controller 400. When only one water immersion sensor 300 gives the water entry signal, to avoid false triggering caused by water immersion sensor 300 failure, the controller 400 does not output the ignition signal. When two or more water immersion sensors 300 give the water entry signal, the two controllers 400 make a logical decision, When both controllers 400 are working normally and receive 2 or more water immersion sensor 300 water entry signals, the two controllers 400 jointly give a start signal to the gas source device release valve 320; when one controller 400 receives 2 or more water immersion sensor 300 water entry signals and the other controller 400 is abnormal, the controller 400 receiving the signal alone gives a start signal to the gas source device release valve 320, ensuring the reliability and safety of the start.

[0034] The gas source device release valve 320 includes a temperature sensor 321, a pressure sensor 322, a temperature-pressure calibration module 323, and a communication fault reporting module 324 connected thereto, and the temperature sensor 321 and the pressure sensor 322 are used to detect the gas temperature and pressure in the front gas source 310 or the rear gas source 311 respectively and transmit them to the temperature-pressure calibration module 323; The temperature-pressure calibration module 323 is used to receive the gas temperature and pressure to calculate the temperature-pressure parameters and compare them with the preset temperature-pressure curve, and send a signal to the communication fault reporting module 324 when the calculated temperature-pressure parameters exceed the preset temperature-pressure curve range, and the communication fault reporting module 324 is used to output a pressure fault signal.

[0035] The principle of comparison by the temperature-pressure calibration module 323 is as follows. The pressure and temperature are positively correlated as shown in the following formula: ; In the formula, m is the mass of the gas medium in the front gas source 310 or the rear gas source 311, g; t is the temperature, ℃; Z is the compression factor of the gas medium in the front gas source 310 or the rear gas source 311, and the value range of Z of helium gas in high and low temperature environment (-55℃-70℃) is 1.11-1.15; P P is the gas pressure in the front gas source 310 or the rear gas source 311, V V is the volume of the gas in the front gas source 310 or the rear gas source 311.

[0036] As shown in Figure 9 , the temperature-pressure calibration module 323 has pre-stored temperature-pressure calibration upper limit and temperature-pressure calibration lower limit, the blue line is the theoretical temperature-pressure curve, in which the temperature is the measured value and the pressure is the theoretical calculation value, the red curve is the temperature-pressure calibration upper limit, and the green curve is the temperature-pressure calibration lower limit. When the temperature-pressure calibration module 323 receives the gas temperature and pressure to calculate the temperature-pressure parameters in the area between the red curve and the green curve, the pressure is normal, and when it exceeds the area between the red curve and the green curve, the pressure is abnormal. The temperature-pressure calibration module 323 sends a signal to the communication fault reporting module 324, and the communication fault reporting module 324 is used to output a pressure fault signal, thereby greatly reducing the inspection and maintenance workload.

[0037] The cross-inflating wide-body helicopter emergency floating device provided by the embodiment of the present application and the helicopter are characterized in that the front float cylinder package 100 and the rear float cylinder package 200 are arranged at the front end and both sides of the helicopter 500 respectively to accommodate the front float cylinder 120 and the rear float cylinder 210, the front gas source 310 and the rear gas source 311 are connected to the front float cylinder 120 and the rear float cylinder 210 through the front cross-inflating pipe 330 and the rear cross-inflating pipe 340 respectively, the front gas source 310 and the rear gas source 311 can be controlled to inflate the front float cylinder 120 and the rear float cylinder 210 simultaneously after the water immersion sensor 300 at the bottom of the helicopter 500 detects water immersion, thereby realizing the cross-inflating function, avoiding the imbalance caused by the single gas source damage which can only inflate the float cylinder on one side, and having the advantages of high water landing and floating stability.

[0038] In other optional embodiments, the number of the front gas source 310 and the rear gas source 311 can also be three or more than three.

[0039] In other optional embodiments, the number of the controller 400 can also be one, three or more than three.

[0040] In other optional embodiments, the number of the water immersion sensor 300 can also be two, three, five or more than five. In other optional embodiments, the number of the front float cylinder package 100 and the rear float cylinder package 200 can also be two pairs or more than two pairs.

[0041] The embodiment of the present application also provides a helicopter, which includes a wide-body helicopter and the above-mentioned cross-inflating wide-body helicopter emergency floating device connected to the wide-body helicopter.

[0042] The above-described embodiments are part of the embodiments of the present application, rather than all the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

Claims

1. A cross-inflatable wide-body helicopter emergency flotation device, characterized in that, It comprises: at least one pair of front buoy package, respectively connected to the bottom of the cockpit of the helicopter on both sides, each of the front buoy package is provided with a front buoy connected to the helicopter; at least one pair of rear buoy package, respectively connected to the outside of the short wing on both sides of the helicopter, each of the rear buoy package is provided with a rear buoy; at least four water immersion sensors, which are arranged at intervals on the bottom of the helicopter, for sending signals after immersion; at least two front air sources, respectively connected to the front cross inflation pipe through the pipeline provided with air source device release valve, the front cross inflation pipe is connected to each of the front buoy respectively; at least two rear air sources, respectively connected to the rear cross inflation pipe through the pipeline provided with air source device release valve, the rear cross inflation pipe is connected to each of the rear buoy respectively; at least one controller for controlling each of the air source device release valve to communicate when receiving the signal sent by at least two of the water immersion sensors.

2. The cross-inflatable wide-body helicopter emergency flotation device according to claim 1, characterized in that It also includes a front inflation cavity and a rear inflation cavity, the front air source is connected to the front cross inflation pipe through the front inflation cavity, and the rear air source is connected to the rear cross inflation pipe through the rear inflation cavity.

3. The cross-inflatable wide-body helicopter emergency flotation device according to claim 1, characterized in that, The rear buoy package includes a flexible package wrapping the rear buoy and a constant force breaking rope connecting the package of the flexible package.

4. The cross-inflatable wide-body helicopter emergency flotation device according to claim 3, characterized in that The rear buoy package includes a rear buoy cabin for accommodating the flexible package and a rear buoy cabin cover detachably connected to the top of the rear buoy cabin, the rear buoy cabin cover is pushed away from the rear buoy cabin along a predetermined direction when the rear buoy inflates and expands.

5. The cross-inflatable wide-body helicopter emergency flotation device according to claim 4, characterized in that The rear buoy cabin and the rear buoy cabin cover are detachably connected by a plurality of pairs of rubber compression seats and fastening screws respectively passing through each pair of rubber compression seats, and each pair of rubber compression seats is arranged at intervals along the circumference of the rear buoy cabin.

6. The cross-inflatable wide-body helicopter emergency flotation device according to claim 4, characterized in that The rear buoy package includes a first nylon belt and a second nylon belt connected to the rear buoy cabin, and the other end of the first nylon belt and the second nylon belt is connected by hook surface and nap surface respectively to fix the flexible package to the rear buoy cabin.

7. The cross-inflatable wide-body helicopter emergency flotation device according to claim 1, characterized in that, Each of the air source device release valves is connected with a temperature sensor, a pressure sensor, a temperature and pressure calibration module and a communication fault reporting module, the temperature sensor and the pressure sensor are used for detecting the gas temperature and pressure in the front air source or the rear air source respectively and transmitting to the temperature and pressure calibration module; the temperature and pressure calibration module is used for receiving the gas temperature and pressure to calculate the temperature-pressure parameter and compare it with the preset temperature-pressure curve, and when the calculated temperature-pressure parameter exceeds the range of the preset temperature-pressure curve, a signal is sent to the communication fault reporting module, and the communication fault reporting module is used for outputting pressure fault signal.

8. The cross-inflatable wide-body helicopter emergency flotation device according to claim 1, characterized in that, The front buoy package is also provided with a support buoy connected to the helicopter, and the front buoy is connected to the support buoy, and the front cross inflation pipe is connected to each of the support buoy respectively.

9. The cross-inflatable wide-body helicopter emergency flotation device according to claim 1, characterized in that, The bottom of the cockpit of the helicopter is recessed to form a buoy accommodating groove for accommodating the front buoy package on both sides.

10. A helicopter characterized by It comprises the cross inflation wide-body helicopter emergency floating device of any one of claims 1 to 9.

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