A four-seat tandem detonation catapult system and its control method

Abstract

This application provides a four-seat tandem detonation ejection system, belonging to the technical field of aviation rescue equipment. The system includes: ejection seats, ejection canopy ejection devices, and a detonation command system. The ejection seats include a first ejection seat, a second ejection seat, a third ejection seat, and a fourth ejection seat. The ejection canopy ejection devices include a first ejection canopy ejection device, a second ejection canopy ejection device, a third ejection canopy ejection device, a fourth ejection canopy ejection device, and a pressure relief port cutting device. The first, second, third, and fourth ejection canopy ejection devices are respectively used to cut the structure of the cockpit roof of the corresponding ejection seat to form an ejection canopy. The pressure relief port cutting device is used to cut the structure of the cockpit roof to form a pressure relief port cover. The detonation command system includes an AND gate controller, a one-way detonation connector, and a timer to form the first ejection seat detonation command system, the second ejection seat detonation command system, the third ejection seat detonation command system, and the fourth ejection seat detonation command system.

Description

Technical Field

[0001] This application belongs to the technical field of aviation rescue equipment, and specifically relates to a four-seat tandem detonation catapult system and its control method. Background Technology

[0002] An ejection seat uses a power unit under the seat to eject the pilot from the cockpit in the event of an aircraft crash, and then deploys a parachute to bring the pilot to a safe landing, thus saving the pilot's life.

[0003] For a four-seat tandem ejection seat, there need to be two ejection modes: one is the full ejection mode, where all seats are ejected when one ejection seat is activated; the other is the single ejection mode, where only that ejection seat is ejected when one ejection seat is activated.

[0004] To achieve ejection rescue of pilots with four tandem ejection seats, a control system or method for four tandem ejection seats is needed. Summary of the Invention

[0005] The purpose of this application is to provide a four-seat tandem detonation catapult system and its control method to solve or mitigate at least one of the problems in the prior art.

[0006] The technical solution of this application is: a four-seat tandem detonation ejection system, the system comprising: ejection seats, ejection device and detonation command system;

[0007] The ejection seat includes a first ejection seat, a second ejection seat, a third ejection seat, and a fourth ejection seat;

[0008] The ejection cover device includes a first ejection cover device, a second ejection cover device, a third ejection cover device, a fourth ejection cover device, and a pressure relief port cutting device. The first ejection cover device, the second ejection cover device, the third ejection cover device, and the fourth ejection cover device are respectively used to cut the structure on the top of the corresponding ejection seat cockpit to form an ejection port cover. The pressure relief port cutting device is used to cut the structure on the top of the cockpit to form a pressure relief port cover.

[0009] The detonation command system comprises an AND gate controller, a one-way detonation connector, and a timer to form a first ejection seat detonation command system, a second ejection seat detonation command system, a third ejection seat detonation command system, and a fourth ejection seat detonation command system.

[0010] The first ejection seat detonation command system has an AND gate controller input terminal connected to the first ejection cover device and the one-way detonation connector output terminal, an AND gate controller output terminal and a one-way detonation connector input terminal connected to the first ejection seat, and a one-way detonation connector output terminal connected to the first ejection cover device with a first delay and a second delay between them.

[0011] The AND gate controller input terminal of the second ejection seat detonation command system is connected to the second ejection cover device and the one-way detonation connector output terminal. The AND gate controller output terminal and the one-way detonation connector input terminal are connected to the second ejection seat. The one-way detonation connector output terminal is connected to the second ejection cover device and there is a second timer between the two.

[0012] The AND gate controller input terminal of the third ejection seat detonation command system is connected to the third ejection cover device and the one-way detonation connector output terminal. The AND gate controller output terminal and the one-way detonation connector input terminal are connected to the third ejection seat. The one-way detonation connector output terminal is connected to the third ejection cover device.

[0013] The AND gate controller input of the fourth ejection seat detonation command system is connected to the fourth ejection cover device and the output of the one-way detonation connector. The AND gate controller output and the one-way detonation connector input are connected to the fourth ejection seat. The one-way detonation connector output is connected to the fourth ejection cover device, and a third timer is provided between them. The one-way detonation connector output is also connected to the pressure relief port cutting device.

[0014] A one-way detonation connector is provided between the output end of the one-way detonation connector of the second ejection seat detonation command system and the third ejection seat. A one-way detonation connector is provided between the output end of the one-way detonation connector of the second ejection seat detonation command system and the third ejection seat detonation command system. A one-way detonation connector is provided between the output end and input end of the one-way detonation connector of the third ejection seat detonation command system and the output end of the one-way detonation connector of the fourth ejection seat detonation command system.

[0015] Furthermore, the first ejection seat, the second ejection seat, the third ejection seat, and the fourth ejection seat are installed in the aircraft cockpit to eject the occupants from the cockpit in emergency situations. The first ejection seat and the second ejection seat are located at the front of the cockpit, and the third ejection seat and the fourth ejection seat are located at the rear of the cockpit. The first ejection seat and the fourth ejection seat are diagonally opposite each other, and the second ejection seat and the third ejection seat are diagonally opposite each other.

[0016] Furthermore, the first ejection seat, the second ejection seat, the third ejection seat, and the fourth ejection seat are equipped with time delay devices to generate a delay t0.

[0017] Furthermore, the first, second, third, and fourth cap-throwing devices are equipped with time delay devices to generate a delay t1.

[0018] Furthermore, the first delay unit generates a delay t2, the second delay unit generates a delay t3, and the third delay unit generates a delay t4.

[0019] Furthermore, a timer, an AND gate controller, a one-way detonation connector, and a first, second, third, and fourth throw-out device and a pressure relief port cutting device are connected via a detonation detonating cord.

[0020] Furthermore, the detonation cord transmits signals using the detonation wave as a medium.

[0021] On the other hand, the technical solution provided in this application is: a control method for a four-seat tandem detonation command system as described above, used to realize full ejection and single ejection of the ejection seat, the control method comprising:

[0022] 1) In full ejection mode, after the first or second ejection seat is activated, all four ejection seats will be ejected, and the ejection order of the seats is the third ejection seat, the second ejection seat, the fourth ejection seat, and the first ejection seat. The specific process is as follows:

[0023] When the first ejection seat is activated, an ejection activation signal is output and transmitted through a one-way detonation connector to the door controller, the second delay device, the third ejection cover device, and the pressure relief port cutting device.

[0024] At this time, the pressure relief port cutting device works to cut the pressure relief port to relieve pressure;

[0025] The third ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the third ejection seat. The third ejection seat ejects after a delay of t0.

[0026] After the second delay timer expires, the detonation signal is transmitted to the second ejection device, the first delay timer, and the third delay timer.

[0027] The second ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the second ejection seat. The second ejection seat ejects after a delay of t0.

[0028] After the third delay timer finishes, the detonation signal is transmitted to the fourth cover-throwing device.

[0029] The fourth ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the fourth ejection seat. The fourth ejection seat ejects after a delay of t0.

[0030] After the first delay timer finishes, the detonation signal is transmitted to the first cover throwing device;

[0031] The first ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the first ejection seat. The first ejection seat ejects after a delay of t0, thus completing the ejection of four seats.

[0032] 2) The procedure for activating the second ejection seat is the same as described above;

[0033] 3) In single-ejection mode, after the third or fourth ejection seat is activated, both the third and fourth ejection seats will eject. The specific process is as follows:

[0034] When the third ejection seat is activated, an ejection activation signal is output and transmitted to the door controller, the third delay device, the third ejection cover device and the pressure relief port cutting device through the one-way detonation connector.

[0035] The third ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the third ejection seat. The third ejection seat ejects after a delay of t0.

[0036] After the third delay timer finishes, the detonation signal is transmitted to the fourth cover-throwing device.

[0037] The fourth ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the fourth ejection seat. The fourth ejection seat ejects after a delay of t0.

[0038] 4) The procedure for activating the fourth ejection seat is the same as described above.

[0039] The four-seat tandem detonation command system and its control method provided in this application can realize the orderly ejection of four ejection seats, and can realize ejection in both modes. The four-seat tandem detonation command system and its control method can realize ejection rescue in emergency ejection conditions of aircraft, and has a simple structure, high reliability, and is easy to implement. Attached Figure Description

[0040] To more clearly illustrate the technical solutions provided in this application, the accompanying drawings will be briefly described below. Obviously, the drawings described below are merely some embodiments of this application.

[0041] Figure 1 This is a schematic diagram of the four tandem detonation catapult systems of this application.

[0042] Figure label:

[0043] 10-Ejection Seat

[0044] 11-First Ejection Seat

[0045] 12-Second Ejection Seat

[0046] 13-Third Ejection Seat

[0047] 14-Third Ejection Seat

[0048] 20-Pour-out device

[0049] 21-First throwing device

[0050] 22-Second Throwing Device

[0051] 23-Third Throwing Device

[0052] 24-Fourth throwing device

[0053] 25-Pressure relief port cutting device

[0054] 30-Detonation Command System

[0055] 31A~31D - AND gate controller

[0056] 32A~32H - Unidirectional explosion transmission connector

[0057] 33A - First Delay Unit

[0058] 33B - Second Delay Unit

[0059] 33C - Third Delay Unit Detailed Implementation

[0060] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings.

[0061] like Figure 1 As shown, the four-seat ejection detonation command system provided in this application includes an ejection seat 10, a ejection device 20, and a detonation command system 30.

[0062] The ejection seat 10 includes a first ejection seat 11, a second ejection seat 12, a third ejection seat 13, and a fourth ejection seat 14. The first to fourth ejection seats are installed in the aircraft cockpit to eject the occupants from the cockpit in emergency situations. The first ejection seat 11 and the second ejection seat 12 can be located at the front of the cockpit, while the third ejection seat 13 and the fourth ejection seat 14 can be located at the rear of the cockpit. The first ejection seat 11 and the fourth ejection seat 14 are diagonally opposite each other, as are the second ejection seat 12 and the third ejection seat 13. Each of the first to fourth ejection seats is equipped with a controller to generate a delay t0.

[0063] The ejection port device 20 is installed on the top of the cockpit and includes a first ejection port device 21, a second ejection port device 22, a third ejection port device 23, a fourth ejection port device 24, and a pressure relief port cutting device 25. The first ejection port device 21, the second ejection port device 22, the third ejection port device 23, and the fourth ejection port device 24 correspond to the first ejection seat 11, the second ejection seat 12, the third ejection seat 13, and the fourth ejection seat 14, respectively, and are used to cut the structure on the top of the cockpit of the corresponding ejection seat to form an ejection port cover. The pressure relief port cutting device 25 is used to cut the structure on the top of the cockpit to form a pressure relief port cover. After receiving the detonation signal, the first to fourth ejection port devices 21 to 24 operate for a delay of t1 and output an ejection port cover cutting feedback signal after completing the ejection port cover cutting and ejection. The delay t1 is controlled by a controller installed inside the first to fourth ejection port devices 21 to 24.

[0064] The detonation command system 30 includes AND gate controllers 31A to 31D, unidirectional detonation connectors 32A to 32H, and a timer to form a first ejection seat detonation command system, a second ejection seat detonation command system, a third ejection seat detonation command system, and a fourth ejection seat detonation command system.

[0065] The first ejection seat detonation command system has an AND gate controller 31A input terminal connected to the first ejection device 21 and the one-way detonation connector 32A output terminal. The AND gate controller 31A output terminal and the one-way detonation connector 32A input terminal are connected to the first ejection seat 11. The one-way detonation connector 32A output terminal is connected to the first ejection device 21, and there are two time delays between them—a first time delay 33A and a second time delay 33B. The first time delay 33A delays for t2, and the second time delay 33B delays for t3.

[0066] For the second ejection seat detonation command system, the input terminal of the AND gate controller 31B is connected to the second ejection device 22 and the output terminal of the one-way detonation connector 32B. The output terminal of the AND gate controller 31B and the input terminal of the one-way detonation connector 32B are connected to the second ejection seat 12. The output terminal of the one-way detonation connector 32B is connected to the second ejection device 22 and there is a second delay device 33B between the two.

[0067] For the third ejection seat detonation command system, the input terminal of the AND gate controller 31C is connected to the third ejection device 23 and the output terminal of the one-way detonation connector 32C. The output terminal of the AND gate controller 31C and the input terminal of the one-way detonation connector 32C are connected to the third ejection seat 23. The output terminal of the one-way detonation connector 32C is connected to the third ejection device 23. There is no time delay between the two.

[0068] For the fourth ejection seat detonation command system, the input terminal of the AND gate controller 31D is connected to the fourth ejection device 24 and the output terminal of the one-way detonation connector 32D. The output terminal of the AND gate controller 31D and the input terminal of the one-way detonation connector 32D are connected to the fourth ejection seat 24. The output terminal of the one-way detonation connector 32D is connected to the fourth ejection device 23 and there is a third delay 33C between them. The output terminal of the one-way detonation connector 32D is connected to the pressure relief port cutting device 25. The third delay 33C delays for t4.

[0069] Meanwhile, a one-way detonation connector 32E is provided between the output end of the one-way detonation connector 32D of the second ejection seat detonation command system and the output end of the one-way detonation connector 32B of the second ejection seat detonation command system and the third ejection seat 23. A one-way detonation connector 32F is provided between the output end and the input end of the one-way detonation connector 32C of the third ejection seat detonation command system and the output end of the one-way detonation connector 32D of the fourth ejection seat detonation command system.

[0070] In the multi-component connection described above in this application, it can be achieved through a three-way connector and / or a four-way connector. The door controllers 31A to 31D are installed on the lower beam of the slide rail of the corresponding ejection seat, and are used to receive the ejection start signal and the ejection port cover cutting feedback signal from the corresponding ejection seat, and after performing logical AND judgment, output the corresponding channel cleaning feedback signal to the corresponding ejection seat.

[0071] In the above connection of the preferred embodiment of this application, the detonating cord connects the three time delay devices, AND gate controllers 31A to 31D, one-way detonation connectors 32A to 32H, and the first to fourth throwing cap devices and pressure relief port cutting device 24. The detonating cord transmits signals through the detonation wave as a medium.

[0072] In addition, the application also provides a control method for the above-mentioned four tandem detonation catapult systems, which can realize two working modes: full catapult mode and single catapult mode. The method includes the following steps:

[0073] 1) In full ejection mode, after the first ejection seat 11 or the second ejection seat 12 is activated, all four ejection seats will be ejected. The ejection order of the seats is third → second → fourth → first. The specific process is as follows:

[0074] When the first ejection seat 11 is activated, it outputs an ejection start signal, which is transmitted through the one-way detonation connector 32F to the gate controller 31C, the second delay timer 33B, the third ejection cover device 23 and the pressure relief port cutting device 25.

[0075] At this time, the pressure relief port cutting device 25 works to cut the pressure relief port to relieve pressure;

[0076] The third ejection device 23 operates for a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller 31C. After logical AND judgment, the AND gate controller 31C outputs a channel cleaning feedback signal to the third ejection seat 13. The third ejection seat 13 ejects after a delay of t0.

[0077] After the second delay timer 33B finishes its delay, the detonation signal is transmitted to the second ejection device 22, the first delay timer 33A and the third delay timer 33C;

[0078] The second ejection device 22 operates for a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller 31B. After logical AND judgment, the AND gate controller 31B outputs a channel cleaning feedback signal to the second ejection seat 12. The second ejection seat 12 ejects after a delay of t0.

[0079] After the third delay timer 33C finishes its delay, the detonation signal is transmitted to the fourth cover-throwing device 24.

[0080] The fourth ejection device 24 operates for a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller 31D. After logical AND judgment, the AND gate controller 31D outputs a channel cleaning feedback signal to the fourth ejection seat 14. The fourth ejection seat 14 ejects after a delay of t0.

[0081] After the first delay timer 33A finishes its delay, the detonation signal is transmitted to the first cover-throwing device 21.

[0082] The first ejection device 21 operates for a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller 31A. After logical AND judgment, the AND gate controller 31A outputs a channel cleaning feedback signal to the first ejection seat 11. The first ejection seat 11 ejects after a delay of t0. This completes the ejection of all four seats.

[0083] 2) The activation and ejection of the second ejection seat 12 is the same as the above procedure.

[0084] 3) In single-ejection mode, after the third ejection seat 13 or the fourth ejection seat 14 is activated, the third ejection seat 13 and the fourth ejection seat 14 will eject. The specific process is as follows:

[0085] When the third ejection seat 13 is activated, it outputs an ejection start signal, which is transmitted through the one-way detonation connector 32C / 32H to the gate controller 31C, the third delay timer 33C, the third ejection cover device 23 and the pressure relief port cutting device 25.

[0086] The third ejection device 23 operates for a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller 31C. After logical AND judgment, the AND gate controller 31C outputs a channel cleaning feedback signal to the third ejection seat 13. The third ejection seat 13 ejects after a delay of t0.

[0087] After the third delay timer 33C finishes its delay, the detonation signal is transmitted to the fourth cover-throwing device 24.

[0088] The fourth ejection device 24 operates for a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller 31D. After logical AND judgment, the AND gate controller 31D outputs a channel cleaning feedback signal to the fourth ejection seat 14. The fourth ejection seat 14 ejects after a delay of t0.

[0089] 4) The fourth ejection seat 14 initiates ejection in the same procedure as described above.

[0090] The four-seat tandem detonation command system and its control method provided in this application can realize the orderly ejection of four ejection seats, and can realize ejection in both modes. The four-seat tandem detonation command system and its control method can realize ejection rescue in emergency ejection conditions of aircraft, and has a simple structure, high reliability, and is easy to implement.

[0091] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A four-seat tandem detonation catapult system, characterized in that, The system includes: an ejection seat, a canister ejection device, and a detonation command system; The ejection seat includes a first ejection seat, a second ejection seat, a third ejection seat, and a fourth ejection seat; The ejection cover device includes a first ejection cover device, a second ejection cover device, a third ejection cover device, a fourth ejection cover device, and a pressure relief port cutting device. The first ejection cover device, the second ejection cover device, the third ejection cover device, and the fourth ejection cover device are respectively used to cut the structure on the top of the corresponding ejection seat cockpit to form an ejection port cover. The pressure relief port cutting device is used to cut the structure on the top of the cockpit to form a pressure relief port cover. The detonation command system comprises an AND gate controller, a one-way detonation connector, and a timer to form a first ejection seat detonation command system, a second ejection seat detonation command system, a third ejection seat detonation command system, and a fourth ejection seat detonation command system. The first ejection seat detonation command system has an AND gate controller input terminal connected to the first ejection cover device and the one-way detonation connector output terminal, an AND gate controller output terminal and a one-way detonation connector input terminal connected to the first ejection seat, and a one-way detonation connector output terminal connected to the first ejection cover device with a first delay and a second delay between them. The AND gate controller input terminal of the second ejection seat detonation command system is connected to the second ejection cover device and the one-way detonation connector output terminal. The AND gate controller output terminal and the one-way detonation connector input terminal are connected to the second ejection seat. The one-way detonation connector output terminal is connected to the second ejection cover device and there is a second timer between the two. The AND gate controller input terminal of the third ejection seat detonation command system is connected to the third ejection cover device and the one-way detonation connector output terminal. The AND gate controller output terminal and the one-way detonation connector input terminal are connected to the third ejection seat. The one-way detonation connector output terminal is connected to the third ejection cover device. The AND gate controller input of the fourth ejection seat detonation command system is connected to the fourth ejection cover device and the output of the one-way detonation connector. The AND gate controller output and the one-way detonation connector input are connected to the fourth ejection seat. The one-way detonation connector output is connected to the fourth ejection cover device, and a third timer is provided between them. The one-way detonation connector output is also connected to the pressure relief port cutting device. A one-way detonation connector is provided between the output end of the one-way detonation connector of the second ejection seat detonation command system and the third ejection seat. A one-way detonation connector is provided between the output end of the one-way detonation connector of the second ejection seat detonation command system and the third ejection seat detonation command system. A one-way detonation connector is provided between the output end and input end of the one-way detonation connector of the third ejection seat detonation command system and the output end of the one-way detonation connector of the fourth ejection seat detonation command system.

2. The four-seat tandem detonation catapult system as described in claim 1, characterized in that, The first ejection seat, the second ejection seat, the third ejection seat, and the fourth ejection seat are installed in the aircraft cockpit to eject the occupants from the cockpit in an emergency. The first ejection seat and the second ejection seat are located at the front of the cockpit, and the third ejection seat and the fourth ejection seat are located at the rear of the cockpit. The first ejection seat and the fourth ejection seat are diagonally opposite each other, and the second ejection seat and the third ejection seat are diagonally opposite each other.

3. The four-seat tandem detonation catapult system as described in claim 2, characterized in that, The first ejection seat, the second ejection seat, the third ejection seat and the fourth ejection seat have a time delay device inside, which is used to generate a delay t0.

4. The four-seat tandem detonation catapult system as described in claim 1, characterized in that, The first, second, third, and fourth cap-throwing devices are equipped with time delay devices to generate a delay t1.

5. The four-seat tandem detonation catapult system as described in claim 1, characterized in that, The first delay device generates a delay t2, the second delay device generates a delay t3, and the third delay device generates a delay t4.

6. The four-seat tandem detonation catapult system as described in claim 1, characterized in that, The device is connected to a detonation detonating cord, a timer, an AND gate controller, a one-way detonation connector, and a first, second, third, and fourth throw-out device and a pressure relief port cutting device.

7. The four-seat tandem detonation catapult system as described in claim 6, characterized in that, The detonation detonating cord transmits signals using the detonation wave as a medium.

8. A control method for a four-seat tandem detonation ejection system as described in any one of claims 1 to 7, used to achieve full ejection and single ejection of ejection seats, characterized in that, The control method includes: 1) In full ejection mode, after the first or second ejection seat is activated, all four ejection seats will eject, and the ejection order is: third ejection seat, second ejection seat, fourth ejection seat, and first ejection seat. The specific process is as follows: When the first ejection seat is activated, an ejection activation signal is output and transmitted through a one-way detonation connector to the door controller, the second delay device, the third ejection cover device, and the pressure relief port cutting device. At this time, the pressure relief port cutting device works to cut the pressure relief port to relieve pressure; The third ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the third ejection seat. The third ejection seat ejects after a delay of t0. After the second delay timer expires, the detonation signal is transmitted to the second ejection device, the first delay timer, and the third delay timer. The second ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the second ejection seat. The second ejection seat ejects after a delay of t0. After the third delay timer finishes, the detonation signal is transmitted to the fourth cover-throwing device. The fourth ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the fourth ejection seat. The fourth ejection seat ejects after a delay of t0. After the first delay timer finishes, the detonation signal is transmitted to the first cover throwing device; The first ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the first ejection seat. The first ejection seat ejects after a delay of t0, thus completing the ejection of four seats. 2) The activation and ejection of the second ejection seat is the same as the procedure described above; 3) In single ejection mode, after the third or fourth ejection seat is activated, both the third and fourth ejection seats will eject. The specific process is as follows: When the third ejection seat is activated, an ejection activation signal is output and transmitted to the door controller, the third delay device, the third ejection cover device and the pressure relief port cutting device through the one-way detonation connector. The third ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the third ejection seat. The third ejection seat ejects after a delay of t0. After the third delay timer expires, the detonation signal is transmitted to the fourth detonation device. The fourth ejection device operates after a delay of t1. After cutting and throwing to form the ejection port cover, it outputs an ejection port cover cutting feedback signal to the AND gate controller. After logical AND judgment, the AND gate controller outputs a channel cleaning feedback signal to the fourth ejection seat. The fourth ejection seat ejects after a delay of t0. 4) The procedure for activating the fourth ejection seat is the same as described above.

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