Parachute and aircraft

Abstract

The utility model discloses a parachute and aircraft relates to aircraft technical field, the parachute comprises a top panel and a plurality of parachute arms, a plurality of parachute arms surround the top panel to connect one end, the adjacent parachute arms are spaced to form a gap, the parachute arms are provided with air guide channel along its length direction, and both ends of the air guide channel are open. A plurality of parachute arms of the parachute are all provided with air guide channels, and the air guide channels are arranged in the length directions of the parachute arms; in the parachute opening process, the parachute arm firstly extends out of the parachute pack, a part of airflow reaches the top panel position along the air guide channel to inflate the top panel, the parachute arm and the top panel are synchronously inflated, the parachute arm is not prone to overturning and knotting, and the parachute can be normally used after being unfolded.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft, and particularly relates to a parachute and an aircraft. Background Art

[0002] A parachute is a deployable aerodynamic decelerator that utilizes the principle of air resistance and inflates and unfolds by moving relative to the air. Parachutes can also be used for airdropping supplies, recovering equipment and devices of aircraft, etc. Parachutes can be classified into circular parachutes, cruciform parachutes, conical parachutes, etc. according to their shapes. The cruciform parachute is a widely used type. The cruciform parachute has the advantages of simple structure, small swing angle, good stability, etc., and is mostly used for aircraft recovery, airdropping and other purposes.

[0003] The prior art with the publication number of CN117807707A discloses a dynamic modeling method for a variable configuration flexible control mechanism. By modeling the parachute as two parts, namely a cruciform parachute and parachute ropes, setting the cruciform parachute as a multi-rigid body model, setting the physical node constraints of the multi-rigid body model and the variable configuration bending angles of each rigid body, and converting the parachute ropes into a spring-damper model, calculating the tension of each spring-damper model, the moment and the length vector at the center of mass of the variable configuration flexible control mechanism, it overcomes the problem of ignoring the variable configuration characteristics of the local part of the parachute in the prior art.

[0004] However, this prior art still has defects. For example, when a cruciform parachute exits the parachute pack, the parachute arms exit the parachute pack first, and the main parachute exits later. Due to the asynchronous inflation of the parachute arms and the main parachute, the parachute arms are prone to flipping and knotting under the action of the airflow, and the parachute cannot be used normally after unfolding. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies, and provide a parachute and an aircraft, so as to solve the technical problem that in the prior art, when a cruciform parachute exits the parachute pack, the parachute arms exit the parachute pack first, and the main parachute exits later. Due to the asynchronous inflation of the parachute arms and the main parachute, the parachute arms are prone to flipping and knotting under the action of the airflow, and the parachute cannot be used normally after unfolding.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] In a first aspect, the utility model provides a parachute, comprising:

[0008] A top panel; and

[0009] A plurality of parachute arms, the plurality of parachute arms are arranged around the top panel, and one end of each parachute arm is connected to the top panel. A gap is formed between adjacent parachute arms, and a gas guiding channel with openings at both ends is arranged along the length direction of each parachute arm.

[0010] In some embodiments, the umbrella arm includes an arm body and a belt body. One end of the arm body is connected to the top panel. The belt body is arranged along the length direction of the arm body. The left and right sides of the belt body are connected to the arm body and enclose the air guide channel with the arm body.

[0011] In some embodiments, the umbrella arm includes an arm body and a belt body. One end of the arm body is connected to the top panel. The belt body is arranged along the length direction of the arm body. The belt body encloses itself to form the air guide channel, and the side part of the belt body is connected to the arm body.

[0012] In some embodiments, the air guide channel extends to both ends of the umbrella arm.

[0013] In some embodiments, the number of the air guide channels is multiple. The multiple air guide channels are all linear and arranged in parallel at intervals.

[0014] In some embodiments, the air guide channels are arranged on both the front and back sides of the umbrella arm.

[0015] In some embodiments, the parachute further includes multiple suspension lines. One ends of the multiple suspension lines are connected to the multiple umbrella arms, and the other ends of the multiple suspension lines converge and are connected.

[0016] In some embodiments, the number of the umbrella arms is four. The top panel and the umbrella arms are all square and have the same area. The four umbrella arms are respectively connected to the four sides of the top panel.

[0017] In a second aspect, the present utility model further provides an aircraft, including an airframe, a parachute pack, a hatch cover, and the above-mentioned parachute. The airframe is provided with a parachute compartment. The parachute is located in the parachute pack and is placed in the parachute compartment through the parachute pack. The hatch cover covers the parachute compartment. The parachute further includes suspension lines and is connected to the airframe through the suspension lines.

[0018] In some embodiments, the aircraft further includes a triggering mechanism. The triggering mechanism is connected to the hatch cover and can drive the hatch cover to disengage from the airframe when receiving a control instruction, so that the parachute pack disengages from the parachute compartment and the parachute deploys.

[0019] Compared with the prior art, the parachute provided by the present utility model includes multiple umbrella arms all provided with air guide channels, and the air guide channels are arranged along the length direction of their respective umbrella arms. During the process of parachute deployment, the umbrella arms first extend out of the parachute pack. A part of the airflow reaches the position of the top panel along the air guide channels, inflating the top panel, so that the umbrella arms and the top panel are inflated synchronously. The umbrella arms are not easily flipped and knotted, and the parachute can be used normally after being deployed. Description of the Drawings

[0020] Figure 1It is a schematic structural diagram of the parachute according to an embodiment of the present utility model when it is deployed;

[0021] Figure 2 It is a schematic structural diagram of multiple umbrella arms of the parachute according to an embodiment of the present utility model when they are deployed;

[0022] Figure 3 It is a schematic structural diagram of an umbrella arm according to an embodiment of the present utility model;

[0023] Figure 4 It is a schematic structural diagram of an umbrella arm according to another embodiment of the present utility model;

[0024] Figure 5 It is a schematic structural diagram of multiple umbrella arms of the parachute according to another embodiment of the present utility model when they are deployed;

[0025] Figure 6 It is a schematic structural diagram of multiple umbrella arms of the parachute according to another embodiment of the present utility model when they are deployed;

[0026] Figure 7 It is a schematic structural diagram of multiple umbrella arms of the parachute according to another embodiment of the present utility model when they are deployed;

[0027] Figure 8 It is a schematic structural diagram of an aircraft according to an embodiment of the present utility model. Detailed implementation manners

[0028] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model 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 utility model and are not used to limit the present utility model.

[0029] In order to solve the technical problem in the prior art that in the process of a cruciform parachute exiting the parachute pack, the umbrella arms of the parachute exit the parachute first and the main parachute exits later, and due to the asynchronous inflation of the umbrella arms and the main parachute, the umbrella arms are prone to flipping and knotting under the action of the airflow, and the parachute cannot be used normally after being deployed, the present utility model provides a parachute, which can realize that the umbrella arms and the top panel are inflated simultaneously during the process of the parachute exiting the parachute, so that the umbrella arms are not prone to flipping and knotting, and the parachute can be used normally after being fully deployed.

[0030] It should be noted that the parachute described in the present utility model is used for but not limited to aircrafts, etc. For the convenience of description, in the present utility model, only the case where the parachute is applied to an aircraft is taken as an example for description, and the principle of the parachute applied to other types of equipment is substantially the same as that applied to an aircraft, and will not be elaborated herein one by one.

[0031] Please refer to Figure 1 ,Figure 1 This is a schematic structural diagram of a parachute 100 in an embodiment of the present invention. The parachute 100 includes a top panel 1 and a plurality of canopy arms 2. One ends of the plurality of canopy arms 2 are connected around the top panel 1, and gaps 11 are formed at intervals between adjacent canopy arms 2. An air guide channel 21 with openings at both ends is arranged along the length direction of the canopy arm 2. Before the parachute 100 is deployed, it is stored in a parachute pack. When the parachute 100 needs to be used, the parachute pack is thrown into the air. Under the action of the air flow, the parachute pack is separated from the parachute 100. During the separation process, the plurality of canopy arms 2 first detach from the parachute pack. After the canopy arms 2 are completely detached from the parachute pack, the top panel 1 then detaches from the parachute pack. During the process of the canopy arms 2 detaching from the parachute pack, the air flow follows the air guide channel 21 to reach the position of the top panel 1, inflating the top panel 1, so that the canopy arms 2 and the top panel 1 can be inflated synchronously, the canopy arms 2 are not easily turned over and knotted, and the parachute 100 can also be deployed at an accelerated speed and can be used normally after deployment.

[0032] In one embodiment, please refer to Figure 2 and Figure 3 , the canopy arm 2 includes an arm body 22 and a belt body 23. One end of the arm body 22 is connected to the top panel 1. The belt body 23 is arranged along the length direction of the arm body 22. The left and right sides of the belt body 23 are connected to the arm body 22 and enclose the above-mentioned air guide channel 21 with the arm body 22. The air guide channel 21 is hollow and is shaped like a tunnel so that the air flow can pass through the air guide channel 21 and flow to the top panel 1. In this embodiment, the left and right sides of the belt body 23 can be connected to the arm body 22 by sewing with a needle and thread ( Figure 3 shown), so that the connection between the belt body 23 and the arm body 22 is stable.

[0033] Please refer to Figure 4 , in other embodiments, the belt body 23 can also enclose itself to form the air guide channel 21, and the side part of the belt body 23 is connected to the arm body 22. The belt body 23 in this embodiment is a tube with openings at both ends and can form the air guide channel 21 by itself without cooperating with the arm body 22 to form the air guide channel 21. The size of the air guide channel 21 can be set according to the size of the belt body 23. The belt body 23 in this embodiment can be connected to the arm body 22 by sewing with a needle and thread or by hot pressing.

[0034] In one embodiment, please refer to Figure 2 , the air guide channel 21 extends to both ends of the canopy arm 2. Specifically, the belt body 23 and the arm body 22 of the canopy arm 2 are of the same length, so that the air guide channel 21 formed by the belt body 23 extends to both ends of the canopy arm 2, so that the air flow flowing through the air guide channel 21 can fully reach the top panel 1 and inflate the top panel 1, which is beneficial to improving the parachute deployment efficiency.

[0035] In one embodiment, please refer to Figure 5, the number of air guide channels 21 provided on one umbrella arm 2 can be multiple. The multiple air guide channels 21 are all linear and arranged in parallel at intervals. It can also be understood that the number of belts 23 provided on the arm body 22 is multiple, and each belt 23 forms a corresponding air guide channel 21. Then, multiple belts 23 can form multiple air guide channels 21 on the arm body 22. Figure 3 Each umbrella arm 2 of the illustrated embodiment is provided with three air guide channels 21. In other embodiments, the number of air guide channels 21 provided on the umbrella arm 2 can also be two, four or more than four. Figure 5 The multiple air guide channels 21 provided on the umbrella arm 2 of the illustrated embodiment occupy a relatively large area of the arm body 22. Under the action of the air flow, the multiple air guide channels 21 of the umbrella arm 2 are inflated simultaneously, making it difficult for the umbrella arm 2 to turn over and knot itself, and further improving the stability of the umbrella arm 2.

[0036] In one of the embodiments, please refer to Figure 6 , air guide channels 21 are provided on both the front and back sides of the umbrella arm 2, so that air flow can enter the air guide channels 21 on both the front and back sides of the umbrella arm 2 simultaneously, further enhancing the structural strength of the umbrella arm 2, and making it difficult for the umbrella arm 2 to turn over and knot under the action of the air flow. In this embodiment, two belts 23 are provided, and the two belts 23 are respectively arranged on the front and back sides of the arm body 22 and are symmetrically arranged with respect to the arm body 22, so that the air flow can maintain the balance of the umbrella arm 2 when flowing through the two air guide channels 21 simultaneously, making it difficult for the umbrella arm 2 to deflect. In addition, the number of air guide channels 21 on both the front and back sides of the arm body 22 is not limited. For example, one or three air guide channels 21 can be provided on both sides of the arm body 22.

[0037] In one of the embodiments, please refer to Figure 1 , the parachute 100 further includes a plurality of suspension lines 3. One ends of the plurality of suspension lines 3 are connected to a plurality of umbrella arms 2, specifically to the ends of the plurality of umbrella arms 2 far from the top panel 1. The other ends of the plurality of suspension lines 3 are converged and connected together for connecting to the aircraft, so that the parachute 100 can assist the aircraft to land after the parachute is opened. Figure 1 The suspension lines 3 of the illustrated embodiment are eight. Each umbrella arm 2 is connected to two suspension lines 3, and the two suspension lines 3 are connected to the left and right ends of the umbrella arm 2 to facilitate the stable connection of the umbrella arm 2. Under the action of the air flow, the cooperation of the traction of the suspension lines 3 can also make the umbrella arm 2 open quickly and not easy to turn over and knot.

[0038] In one of the embodiments, please refer to Figure 2 , Figure 2The number of the umbrella arms 2 in the illustrated embodiment is four. The top panel 1 and the four umbrella arms 2 are all square in shape and have the same area. The four umbrella arms 2 are respectively connected to the four sides of the top panel 1, making the parachute 100 in a cross shape. In this embodiment, the umbrella arm 2 is square. Compared with the strip-shaped umbrella arm 2, the width of the square umbrella arm 2 in this embodiment appears wider. When two umbrella ropes 3 are connected to the top corners on both sides of the umbrella arm 2, the umbrella arm 2 is not easily turned over and knotted under the action of air flow, and the structure is more stable.

[0039] In one embodiment, please refer to Figure 2 , Figure 2 The shape of the air guide channel 21 in the illustrated embodiment is linear. In other embodiments, please refer to Figure 7 , the air guide channel 21 can also be set to a curved shape, that is, the shape of the belt body 23 is set to a curved shape. Compared with the linear air guide channel 21, the length of the curved air guide channel 21 is longer. When the air flow flows in the curved air guide channel 21, the structural integrity of the umbrella arm 2 can be enhanced, and the umbrella arm 2 is not easily turned over and knotted.

[0040] In a second aspect, please refer to Figure 8 , the present utility model also provides an aircraft 101, including a fuselage 4, a parachute pack 5, a hatch 6, and the above-mentioned parachute 100. The fuselage 4 is provided with a parachute compartment 41. The parachute 100 is located in the parachute pack 5 and is placed in the parachute compartment 41 through the parachute pack 5. The hatch 6 is covered on the parachute compartment 41. The parachute 100 further includes umbrella ropes 3 and is connected to the fuselage 4 through the umbrella ropes 3.

[0041] In one embodiment, please refer to Figure 8 , the aircraft 101 further includes a triggering mechanism (not shown in the figure). The triggering mechanism is a prior art, and its specific structure will not be described in detail. The triggering mechanism is connected to the hatch 6 and can drive the hatch 6 to disengage from the fuselage 4 when receiving a control instruction, so that the parachute pack 5 is disengaged from the parachute compartment 41. Under the action of air flow, the parachute pack 5 is disengaged from the parachute 100, and the parachute 100 opens. During the process of the parachute 100 disengaging from the parachute pack 5, the umbrella ropes 3 pull the umbrella arms 2, and the multiple umbrella arms 2 gradually come out of the parachute pack 5. The air flow simultaneously enters the air guide channels 21 of the multiple umbrella arms 2 and blows towards the top panel 1. The top panel 1 and the multiple umbrella arms 2 simultaneously introduce the air flow, making the umbrella arms 2 not easily turn over and knotted, and the parachute 100 can also be quickly deployed.

[0042] For a better understanding of the present utility model, the following Figures 1 to 8 is used to describe the technical solution of the present utility model in detail:

[0043] The parachute 100 provided by the present utility model is mainly used to assist an aircraft such as a drone to land safely in an emergency. Before the parachute 100 is activated, it is stored in the parachute compartment 41 of the aircraft through the parachute pack 5 and sealed by the hatch 6. When it is necessary to activate the parachute 100, the staff can send a control instruction to the triggering mechanism of the aircraft to control the hatch 6 to fly out. The hatch 6 drives the parachute pack 5 and the parachute 100 into the air. The fuselage 4 of the aircraft pulls the parachute pack 5 to continue flying through the parachute ropes 3. The parachute 100 gradually detaches from the parachute pack 5 under the action of its own gravity and air flow. Multiple parachute arms 2 of the parachute 100 first detach from the parachute pack 5. The air flow simultaneously enters the air guiding channels 21 of the multiple parachute arms 2 and blows towards the top panel 1 that has not yet exited the parachute, causing the top panel 1 and the multiple parachute arms 2 to be inflated simultaneously. The air guiding channels 21 can also provide a certain supporting effect on the parachute arms 2 during inflation, making it difficult for the parachute arms 2 to flip and knot under the action of the air flow. After the top panel 1 exits the parachute pack 5, the entire parachute 100 can be quickly deployed to assist the aircraft in landing. The parachute pack 5 is connected to the top panel 1 through the first thin rope 7, and the hatch 6 is connected to the parachute pack 5 through the second thin rope 8, enabling the parachute pack 5 and the hatch 6 to be recycled and reused.

[0044] The specific embodiments of the present utility model described above do not constitute a limitation to the protection scope of the present utility model. Any other corresponding changes and deformations made according to the technical concept of the present utility model shall be included in the protection scope of the claims of the present utility model.

Claims

1. A parachute, characterized in that: include: Top width; and A plurality of umbrella arms are arranged around the top panel, and one end of the umbrella arms is connected to the top panel. Gaps are formed between adjacent umbrella arms, and air guide channels with openings at both ends are arranged along the length direction of the umbrella arms.

2. The parachute according to claim 1, characterized in that The umbrella arm comprises an arm body and a belt body, one end of the arm body is connected to the top panel, the belt body is arranged along the length direction of the arm body, and the left and right sides of the belt body are connected to the arm body and enclosed with the arm body to form the air guide channel.

3. The parachute according to claim 1, characterized in that The umbrella arm comprises an arm body and a belt body, one end of the arm body is connected to the top panel, the belt body is arranged along the length direction of the arm body, the belt body itself encloses the air guide channel, and the side of the belt body is connected to the arm body.

4. The parachute according to claim 1, characterized in that: The air guiding channel extends to both ends of the umbrella arm.

5. The parachute according to claim 1, characterized in that: There are multiple air guide channels, and the multiple air guide channels are all linear and arranged in parallel and at intervals.

6. The parachute according to claim 1, characterized in that: The air guide channels are arranged on both the front and back sides of the umbrella arm.

7. The parachute according to claim 1, characterized in that: The parachute also includes a plurality of parachute ropes, one end of each of the plurality of parachute ropes is connected to a plurality of parachute arms, and the other ends of each of the plurality of parachute ropes are converged and connected.

8. The parachute according to claim 1, characterized in that: The number of the umbrella arms is four, the top frame and the umbrella arms are both square and have the same area, and the four umbrella arms are respectively connected to the four sides of the top frame.

9. An aircraft, characterized in that: It comprises a body, a parachute bag, a hatch and the parachute as claimed in any one of claims 1 to 8, wherein the body is provided with a parachute cabin, the parachute is located in the parachute bag and is placed in the parachute cabin through the parachute bag, the hatch is covered in the parachute cabin, and the parachute also comprises a parachute rope and is connected to the body through the parachute rope.

10. The aircraft according to claim 9, characterized in that The aircraft also includes a trigger mechanism, which is connected to the canopy and can drive the canopy to separate from the fuselage upon receiving a control command, so that the parachute bag can separate from the parachute compartment and the parachute can be opened.

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