Parachute bag and aircraft

Abstract

The present invention discloses a parachute bag and an aircraft, relating to the technical field of aircraft. The parachute bag includes a main parachute bag and multiple auxiliary parachute bags. The main parachute bag is provided with a chamber for accommodating parachutes. The multiple auxiliary parachute bags are connected around the periphery of the main parachute bag to form multiple compartments. One end of the multiple compartments is closed and the other end is open, and the open ends of the multiple compartments are located on the same side as the open end of the main parachute bag. The parachute bag includes the main parachute bag and the auxiliary parachute bags arranged around the periphery of the main parachute bag, so that the projected area of ​​the parachute bag on the cabin canopy is large, which can also be understood as the difference between the area of ​​the parachute bag and the area of ​​the cabin canopy is small. In addition, each auxiliary parachute bag can form a compartment. The periphery of the main parachute bag has multiple compartments. During flight, airflow can quickly fill the multiple compartments, thereby further expanding the area of ​​the parachute bag and further reducing the area difference with the cabin canopy. The cabin canopy is not easily flipped during flight, allowing the parachute bag to be deployed quickly, shortening the deployment time.

Description

Technical Field

[0001] The present invention relates to the technical field of aircraft, and in particular to a parachute bag and an aircraft. Background Art

[0002] Drones often require a parachute to assist in an emergency landing. The parachute is enclosed in a parachute bag and mounted on the drone's parachute bay. The bay is covered by a canopy, which is connected to the parachute bag. The drone is equipped with an ignition device. When commanded, the ignition device burns, generating high-temperature gas that propels the canopy into the air. The canopy then propels the parachute bag into the air, where the airflow deploys the parachute inside, assisting the drone's landing.

[0003] However, the existing hatch cover is usually a flat plate with the same cross-sectional shape as the parachute cabin. The hatch cover area is large and the parachute bag area is small. The parachute bag has a small projected area on the hatch cover. When the hatch cover flies out, it is easy to flip over under the action of airflow, causing the parachute bag connected to it to flip over as well, which prolongs the parachute opening time and is not conducive to the safe landing of the drone. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and propose a parachute bag and an aircraft to solve the technical problem in the prior art that the hatch of the UAV is usually a flat plate with the same cross-sectional shape as the parachute cabin, the hatch area is large and the parachute bag is small, and the projection area of ​​the parachute bag on the hatch is small. During the process of the hatch flying out, it is easy to flip over under the action of the airflow, causing the parachute bag connected to it to flip over as well, thereby prolonging the parachute opening time.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present invention provides an umbrella bag, comprising:

[0007] A main parachute bag, which contains a chamber for accommodating the parachute; and

[0008] A plurality of auxiliary parachute bags surround the circumference of the main parachute bag and are connected to the main parachute bag, the auxiliary parachute bag is formed with a compartment, one end of the compartment is closed and the other end is open, and the open end of the compartment and the open end of the main parachute bag are located on the same side.

[0009] In some embodiments, the auxiliary parachute pack includes side panels and a bottom panel, both ends of the side panels are connected to the sides of the main parachute pack, and the bottom panel connects the side panels and the main parachute pack and is combined with the side panels and the main parachute pack to form the compartment.

[0010] In some embodiments, the auxiliary parachute pack includes side panels and a bottom panel, the side panels themselves enclose the compartment, the side portions of the side panels are connected to the main parachute pack, the bottom panel is connected to one end of the side panels to close one end of the compartment, and the other end of the side panel is an open end and is located on the same side as the open end of the main parachute pack.

[0011] In some embodiments, the side panels and the bottom panel are both made of textile materials with low or zero air permeability.

[0012] In some embodiments, a circulation hole is opened on the side of the main parachute bag, and the circulation hole is connected to the accommodating cavity and the compartment.

[0013] In some embodiments, the open end of the main parachute pack is provided with a closing blade, and the closing blade can cover or open the open end of the main parachute pack.

[0014] In the second aspect, the present invention also provides an aircraft, comprising a fuselage, an igniter, a hatch and the above-mentioned parachute pack, wherein the fuselage is provided with a parachute cabin, the parachute pack is located in the parachute cabin, the hatch is provided in the parachute cabin and connected to the parachute pack, the igniter is provided on the fuselage and can drive the hatch to fly out upon receiving a control signal, so that the hatch drives the parachute pack to detach from the parachute cabin and open the parachute.

[0015] In some embodiments, the hatch cover is in the shape of a cylindrical plate, and the plurality of auxiliary parachute packs are inscribed in the projection of the hatch cover and in the circumferential edge of the hatch cover.

[0016] In some embodiments, the hatch is detachably connected to the auxiliary parachute packs of multiple parachute packs at the same time.

[0017] In some embodiments, the aircraft also includes a connecting ring and a plurality of mounting screws. The connecting ring is located between the cabin cover and the parachute pack. The connecting ring is provided with a plurality of through holes around its circumference. The plurality of through holes are provided corresponding to the auxiliary parachute packs of the plurality of parachute packs. The plurality of mounting screws are correspondingly passed through the plurality of through holes and connected to the cabin cover and the plurality of auxiliary parachute packs.

[0018] Compared to the prior art, the parachute bag provided by the present invention can be directly connected to the aircraft's canopy. When the canopy is ejected, it can carry the parachute bag with it into the air. Under the influence of airflow, the parachute bag can deploy its parachute to assist the aircraft in landing. The parachute bag includes a main parachute bag and auxiliary parachute bags arranged around the main parachute bag. This allows the parachute bag to project a large area onto the canopy, which can also be understood as the difference between the area of ​​the parachute bag and the area of ​​the canopy being small. Furthermore, each auxiliary parachute bag can form a compartment, and the main parachute bag has multiple compartments around its perimeter. During flight, airflow can quickly fill the multiple compartments, further expanding the area of ​​the parachute bag and reducing the area difference with the canopy. The canopy is less likely to flip during flight, allowing the parachute in the bag to deploy quickly, shortening deployment time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 1 is a front view schematic diagram of an umbrella bag provided by an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 Schematic diagram of the cross section in the AA direction;

[0021] Figure 3 yes Figure 1 Schematic diagram of the cross section in the BB direction;

[0022] Figure 4 1 is a schematic structural diagram of an umbrella bag according to another embodiment of the present invention;

[0023] Figure 5 is a schematic structural diagram of an aircraft according to an embodiment of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the connection between the parachute bag and the hatch cover of the present invention;

[0025] Figure 7 yes Figure 6 Schematic top view of

[0026] Figure 8 yes Figure 7 Schematic diagram of the cross section in the CC direction. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] To address the technical problem that an aircraft canopy is typically a flat plate with the same cross-sectional shape as the parachute compartment, resulting in a larger canopy area and a smaller parachute bag, resulting in a small projection of the bag on the canopy. This can easily cause the canopy to flip under the influence of airflow during launch, causing the attached parachute bag to also flip, thus prolonging the parachute deployment time, the present invention provides a parachute bag that can achieve an area of ​​the bag expanded by airflow that is close to the area of ​​the canopy, making the canopy less likely to flip during flight and enabling rapid deployment of the bag, thereby assisting the aircraft in landing safely. The aircraft may be, for example, a drone.

[0029] It should be noted that the parachute bag described in the present invention is used for but not limited to aircraft, etc. For the convenience of explanation, in the present invention, only the application of the parachute bag to the aircraft is used as an example. The principle of applying the parachute bag to other types of equipment is essentially the same as that of applying it to aircraft, so they will not be described here one by one.

[0030] See also Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a parachute bag 100 according to one embodiment of the present invention. The parachute bag 100 includes a main parachute bag 1 and multiple auxiliary parachute bags 2. The main parachute bag 1 is provided with a chamber 11 for accommodating a parachute. The chamber 11 is closed at one end and open at the other. The parachute can fall out of the open end of the chamber 11 and then open under the influence of airflow to assist the aircraft in landing. The multiple auxiliary parachute bags 2 are connected around the circumference of the main parachute bag 1. Each auxiliary parachute bag 2 can form a corresponding compartment 21, so the multiple auxiliary parachute bags can form multiple compartments 21. The multiple compartments 21 are closed at one end and open at the other end, and the open ends of the multiple compartments 21 are located on the same side as the open end of the main parachute bag 1.

[0031] The parachute bag 100 can be directly connected to the canopy. When the canopy is released, it can also pull the parachute bag 100 out with it. While the parachute bag 100 is in flight, airflow can simultaneously enter the accommodating chamber 11 and the multiple compartments 21, driving the main parachute bag 1 and the multiple auxiliary parachute bags 2 to fully expand. The area of ​​the parachute bag 100 is relatively close to that of the canopy. In addition, the multiple compartments 21 are arranged around the main parachute bag 1, ensuring that the overall airflow of the parachute bag 100 is balanced. This prevents the canopy from flipping over easily, allowing the parachute to smoothly detach from the accommodating chamber 11 for smooth deployment and assisting the aircraft in landing safely.

[0032] The number of reserve parachute packs 2 is unlimited. Figure 3 The illustrated embodiment includes six auxiliary parachute bags 2, which form six compartments 21. The six auxiliary parachute bags 2 are evenly arranged around the circumference of the main parachute bag 1 so that the airflow can evenly exert force on the parachute bag 100. In other embodiments, the number of auxiliary parachute bags 2 can also be four, seven, or more.

[0033] In one embodiment, see Figure 2 The auxiliary parachute bag 2 includes side panels 22 and a bottom panel 23. The side panels 22 form the sides of the auxiliary parachute bag 2, while the bottom panel 23 forms the bottom of the auxiliary parachute bag 2. In this embodiment, the side panels 22 are non-closed, meaning that both ends of the side panels 22 are connected to the sides of the main parachute bag 1. The bottom panel 23 connects the side panels 22 and the sides of the main parachute bag 1. The bottom panel 23, the side panels 22, and the sides of the main parachute bag 1 enclose the aforementioned compartment 21. In this embodiment, the bottom panel 23 is shaped like the cross-section of the compartment 21, generally crescent-shaped. Both the bottom panel 23 and the side panels 22 are connected to the main parachute bag 1, making the entire parachute bag more structurally sound and less likely to fall apart.

[0034] In another embodiment, see Figure 2 and Figure 3 The auxiliary parachute pack 2 includes side panels 22 that enclose a compartment 21. The side panels 22 are connected to the main parachute pack 1. A bottom panel 23 connects to one end of the side panel 22 to seal one end of the compartment 21. The other end of the side panel 22 is open and located on the same side as the open end of the main parachute pack 1. In this embodiment, the bottom panel 23 is not connected to the main parachute pack 1, which simplifies the parachute pack manufacturing process and saves costs.

[0035] In one embodiment, the side panels 22 and the bottom panel 23 are both made of textile materials with low or zero air permeability, so that after the air enters the compartment 21, the air loss can be reduced, the auxiliary parachute bag 2 can be quickly expanded, and the parachute bag can quickly stabilize after being thrown into the air.

[0036] In one embodiment, see Figure 2 The open end of the main parachute bag 1 is provided with a sealing blade 12, and the number of the sealing blades 12 is multiple. The multiple sealing blades 12 are arranged around the circumference of the open end of the main parachute bag 1, and the sealing blades 12 can cover or open the open end of the main parachute bag 1. In this embodiment, before the parachute bag 100 is thrown out, the parachute is installed in the accommodating chamber 11 of the main parachute bag 1. The sealing blades 12 are multiple, and the sealing blades 12 are soft structures, such as soft belts. The multiple sealing blades 12 can be softly connected to each other or all softly connected to the main parachute bag 1 to limit the parachute in the accommodating chamber 11, to prevent the parachute from falling out prematurely and scratching the aircraft, causing the parachute to fail to open. The soft connection of this embodiment can be a rubber strip or Velcro, etc., which is used to limit the parachute from falling out prematurely, and can also be released under the impact of high-speed airflow after the parachute bag 100 is thrown out, so that the parachute can fall out and open smoothly.

[0037] Second, see Figure 5The present invention also provides an aircraft 101 comprising an airframe 4, an igniter, a canopy 3, and the aforementioned parachute bag 100. The airframe 4 defines a parachute compartment 41, the parachute bag 100 being located in the compartment 41. The canopy 3 is located within the compartment 41 and connected to the parachute bag 100. The igniter is located within the airframe 4. When recovering the aircraft 101, ground personnel can issue control commands to the igniter via a terminal device. The igniter ignites combustible materials, generating high pressure that propels the canopy 3 away from the airframe 4 at a rapid speed. The canopy 3 then pulls the parachute bag 100 away from the compartment 41. The parachute bag 100 deploys under the influence of airflow, assisting the landing of the aircraft 101. The parachute is connected to the airframe 4 via a parachute cord 7, enabling the parachute to assist the landing of the airframe 4 in the event of air resistance. When the parachute is fully deployed, the parachute bag 100 and the canopy 3 are attached to the parachute, allowing the parachute bag 100 and the canopy 3 to be recovered for secondary use. Besides using an igniter to ignite combustibles and generate high-pressure gas, another method for triggering the hatch cover 3 to separate from the aircraft body 4 is to use a spring. For example, a spring can be pressed against the hatch cover 3, and an electronic switch can be connected to the hatch cover 3 by a snap. Upon receiving a control command, the electronic switch can unlock the snap, allowing the hatch cover 3 to fly away from the aircraft body under the elastic force of the spring. Compared to igniting combustibles, using a spring to release the hatch cover 3 does not produce harmful gases and is safer.

[0038] In one embodiment, see Figure 6 and Figure 7 The hatch cover 3 is disc-shaped, and the projections of the multiple auxiliary parachute bags 2 on the hatch cover 3 are inscribed within the circumferential edge of the hatch cover 3. In this embodiment, the difference between the projection area of ​​the parachute bag 100 on the hatch cover 3 and the surface area of ​​the hatch cover 3 is small, making the parachute bag 100 and the hatch cover 3 less likely to flip over due to airflow, and the parachute opening is smoother.

[0039] In one embodiment, see Figure 7 and Figure 8The hatch cover 3 is detachably connected to the auxiliary parachute packs 2 of multiple parachute packs 100, facilitating replacement of the parachute packs 100 or the hatch cover 3. In this embodiment, the aircraft 101 further includes a connecting ring 5 and multiple mounting screws 6. The connecting ring 5 is positioned between the hatch cover 3 and the parachute pack 100. The connecting ring 5 has multiple through-holes disposed around its perimeter, corresponding to the multiple auxiliary parachute packs 2. The mounting screws 6 extend through the multiple through-holes and connect to the hatch cover 3 and the multiple auxiliary parachute packs 2, enabling detachable connection between the hatch cover 3 and the parachute packs 100. In this embodiment, the connecting ring 5 extends through both sides of each auxiliary parachute pack 2 near the hatch cover 3, allowing the connecting ring 5 to connect to each auxiliary parachute pack 2. During installation, multiple screw holes can be pre-formed in the hatch cover 3, with the positions of the screw holes corresponding to the multiple auxiliary parachute packs 2, and the number of screw holes matching the number of auxiliary parachute packs 2. Use screws to sequentially penetrate the through holes and bottom web 23 of the connecting ring 5 in the compartment 21, and then threadedly connect them to the screw holes of the hatch 3 to complete the connection between the hatch 3 and the parachute bag 100. At this time, the connecting ring 5 can press the bottom web 23 of all the auxiliary parachute bags 2. Even if the auxiliary parachute bags 2 are affected by high-speed airflow, the auxiliary parachute bags 2 can remain in the current position and remain motionless relative to the hatch 3. The compartments 21 of multiple auxiliary parachute bags 2 can smoothly enter the airflow to quickly expand the parachute bags 100, providing favorable conditions for opening the parachute.

[0040] In order to better understand the present invention, the following Figures 1 to 8 The technical solution of the present invention is described in detail:

[0041] The parachute bag 100 provided by the present invention can be directly connected to the canopy 3 of an aircraft 101. When the canopy 3 is ejected from the aircraft 101, it can carry the parachute bag 100 into the air. Airflow can open the parachute bag 100 to assist in the landing of the aircraft 101. The parachute bag 100 includes a main parachute bag 1 and multiple auxiliary parachute bags 2 arranged around the main parachute bag 1. Compared to existing parachute bags without auxiliary parachute bags 2, the present invention provides multiple auxiliary parachute bags 2 around the main parachute bag 1, minimizing the difference in area between the parachute bag 100 and the canopy 3. In addition, each auxiliary parachute bag 2 can form a separate compartment 21, and the main parachute bag 1 has multiple compartments 21 on its peripheral side. During the flight of the parachute bag 100, the airflow can quickly fill the multiple compartments 21, so that the area of ​​the parachute bag 100 can be further expanded, and the area difference with the hatch 3 can be further reduced. The hatch 3 is not easy to flip over during the flight, so that the parachute in the parachute bag 100 can be opened quickly, shortening the opening time, which is conducive to the safe landing of the aircraft.

[0042] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. An umbrella bag, characterized in that: include: The main parachute bag is provided with a chamber for accommodating the parachute; and A plurality of auxiliary parachute bags surround the circumference of the main parachute bag and are connected to the main parachute bag, the auxiliary parachute bag is formed with a compartment, one end of the compartment is closed and the other end is open, and the open end of the compartment and the open end of the main parachute bag are located on the same side.

2. The umbrella bag according to claim 1, characterized in that: The auxiliary parachute bag includes side panels and a bottom panel, both ends of the side panels are connected to the sides of the main parachute bag, and the bottom panel connects the side panels and the main parachute bag and is combined with the side panels and the main parachute bag to form the compartment.

3. The umbrella bag according to claim 1, characterized in that: The auxiliary parachute pack includes side panels and a bottom panel, wherein the side panels themselves enclose the compartment, the side portions of the side panels are connected to the main parachute pack, the bottom panel is connected to one end of the side panels to close one end of the compartment, and the other end of the side panel is an open end and is located on the same side as the open end of the main parachute pack.

4. The umbrella bag according to claim 2 or 3, characterized in that: The side panels and the bottom panel are both made of textile materials with low or zero air permeability.

5. The umbrella bag according to claim 1, characterized in that: A circulation hole is opened on the side of the main parachute bag, and the circulation hole is connected to the accommodating cavity and the compartment.

6. The umbrella bag according to claim 1, characterized in that: The open end of the main parachute bag is provided with a sealing blade, and the sealing blade can cover or open the open end of the main parachute bag.

7. An aircraft, characterized in that: It comprises a body, an igniter, a hatch and a parachute bag as described in any one of claims 1 to 6, wherein the body is provided with a parachute cabin, the parachute bag is located in the parachute cabin, the hatch is provided in the parachute cabin and is connected to the parachute bag, the igniter is provided on the body and can drive the hatch to fly out when receiving a control signal, so that the hatch drives the parachute bag to detach from the parachute cabin and open the parachute.

8. The aircraft according to claim 7, characterized in that The hatch cover is in the shape of a cylindrical plate, and the plurality of auxiliary parachute packs are inscribed in the projection of the hatch cover and on the circumferential edge of the hatch cover.

9. The aircraft according to claim 7, characterized in that The hatch is detachably connected to the auxiliary parachute packs of the plurality of parachute packs.

10. The aircraft according to claim 9, characterized in that The aircraft also includes a connecting ring and a plurality of mounting screws. The connecting ring is located between the cabin cover and the parachute pack. The connecting ring is provided with a plurality of through holes around its circumference. The plurality of through holes are provided corresponding to the auxiliary parachute packs of the plurality of parachute packs. The plurality of mounting screws are correspondingly passed through the plurality of through holes and connected to the cabin cover and the plurality of auxiliary parachute packs.

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