A new type of aircraft propulsion system

Abstract

This utility model relates to the field of aircraft technology, specifically to a novel aircraft power unit, including a center base. Four fixed plates are fixedly connected to the outside of the center base in a cross shape. Protective rings are fixedly connected to the ends of the four fixed plates away from the center base. A rotor is installed in the center of the inner part of the protective rings. A connecting seat is fixedly connected to the inside of the top of the center base. Through the protective components, in the retracted state, the rotor can be folded along the connecting rod towards the center base, forming a structure that fits snugly against the aircraft body. Combined with a screw-on protective cover, the external enclosure is completed. The reasonable layout keeps the rotor away from external exposed surfaces, preventing damage to the rotor from impacts even when the aircraft body is placed inside the enclosure. This reduces the risk of external impacts during transportation or storage, effectively preventing deformation or breakage of the rotor due to collisions or compression, and improving the overall safety and reliability of the aircraft.

Description

Technical Field

[0001] This utility model relates to the field of aircraft technology, and in particular to a novel aircraft power unit. Background Technology

[0002] With the development of new aircraft technologies such as drones and vertical take-off and landing aircraft, the structural design of their power units has become one of the key factors affecting flight performance, safety and portability. Currently, multi-rotor aircraft are widely used in logistics transportation, geographic surveying and mapping, emergency rescue and other fields, which puts forward higher requirements for the compactness of their structure, ease of disassembly and assembly and protection measures for rotating parts.

[0003] In existing technologies, such as the "new type of aircraft" with announcement number CN206914641U, there is a fuselage. Inside the fuselage are installed drive unit A, power unit A, drive unit B, and power unit B. A set of ducted lift fans is provided on each side of the fuselage. The ducted lift fans are rotatably connected to the sides of the fuselage. Power unit A is connected to the ducted lift fans through drive unit A. A linkage mechanism is provided in the middle of the side of the fuselage. Although this technology has the characteristics of flexible operation and precise flight attitude control, it is consistent with the traditional method in that the power unit of the aircraft in the existing technology usually adopts a fixed blade structure, with the rotor exposed to the outside. It does not have a reliable storage and protection mechanism, which has the following shortcomings: First, during transportation and storage, the rotor is prone to deformation or breakage due to external impact, which can lead to the aircraft being unable to fly. At the same time, although there is a storage box in the traditional technology, the rotor of the aircraft is still exposed inside the box. When the box is hit or dropped, the rotor will still be damaged. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a new type of aircraft power unit to solve the problem that existing aircraft power units mostly adopt fixed blade structures, with the rotating blade exposed to the outside. Even if they are stored in a box, they still lack an effective protection mechanism, and the rotating blade is easily deformed or damaged due to collisions or falls during transportation or storage, which affects the normal use of the aircraft.

[0005] To achieve the above objectives, this utility model provides a novel aircraft power unit, including a central base. Four fixed plates are fixedly connected to the outside of the central base in a cross shape. Protective rings are fixedly connected to the ends of the four fixed plates away from the central base. A rotating propeller is installed in the center of the inner part of each protective ring. A connecting seat is fixedly connected to the inside of the top of the central base. A fixed seat is fixedly connected to the center of the top of the connecting seat. A protective component for folding and storing the rotating propeller is provided on the top of the fixed seat. The protective component includes four connecting blocks fixedly connected to the top of the fixed seat. The positions of the four connecting blocks correspond to the positions of the four fixed plates. A connecting rod is rotatably connected to the end of each connecting block away from the fixed seat via a shaft. A motor housing is fixedly connected to the end of each connecting rod away from the connecting block. The rotating propeller is rotatably connected to the bottom of the motor housing. A fixing component is provided on the top of the fixed base, which is used to fix the positions of the connecting blocks and the connecting rod.

[0006] Preferably, a battery, a control chip, and a drive module are installed inside the central base, and a motor is installed inside the motor housing. The output end of the motor passes through the bottom of the motor housing and is fixedly connected to the top of the rotating propeller. The output end of the battery is electrically connected to the input end of the control chip and the drive module. The output end of the control chip is electrically connected to the input end of the drive module. The output end of the drive module is electrically connected to the input end of the motor via a connecting wire. The connecting wire passes through the interior of the central base, through the interior of the connecting block and the bottom of the connecting rod, and connects to the interior of the motor housing. When the connecting wire passes through the connection point of the connecting block and the connecting rod, it passes through the bottom of the connection point. The length of the connecting wire at the connection point of the connecting block and the connecting rod is adapted to the connecting block and the connecting rod for folding.

[0007] Preferably, when the connecting block and the connecting rod are parallel, the bottom of the connecting rod contacts the top of the protective ring, and the top of the fixing seat is provided with four alignment grooves, the alignment grooves being located at the bottom of the connection between the connecting block and the connecting rod.

[0008] Preferably, the top of the four connecting rods is movably connected to two hooks and fixedly connected to two hanging rings via circular rings. The two hooks and two hanging rings are arranged symmetrically in pairs, and the height of one symmetrical hook and hanging ring is different from the height of the other symmetrical hook and hanging ring. When the connecting rod is placed perpendicular to the connecting block, the end of the hook away from the connecting rod is hung inside the hanging ring.

[0009] Preferably, a connecting groove is provided between the center seat and the connecting seat, and the connecting seat is provided with threads on the outside. When the connecting block and the connecting rod are placed vertically, the protective cover covers the outside of the four connecting rods, and the inside of the bottom of the protective cover is connected to the external threads of the connecting seat.

[0010] Preferably, the fixing assembly includes a first alignment plate fixedly connected to the top of one end of the connecting block and a second alignment plate fixedly connected to the top of one end of the connecting rod. The first alignment plate and the second alignment plate are at the same height, and a fixing rod is slidably connected between the second alignment plate and the first alignment plate.

[0011] Preferably, a spring is sleeved on the outside of one end of the fixing rod, one end of the spring is fixedly connected to one side of the first alignment plate, and the other end of the spring is fixedly connected to the outside of one end of the fixing rod. When the spring rebounds, one end of the fixing rod moves away from the inside of the second alignment plate, and the position of the fixing rod away from the second alignment plate corresponds to the position of the connecting block away from the fixed seat.

[0012] Preferably, a fixing box is fixedly connected to the inside of the top of the fixing base, and a rotating wheel is rotatably connected to the center of the fixing box. Four arc-shaped blocks are fixedly connected to the outside of the rotating wheel in a cross shape. The shape of the fixing rod at the end away from the second alignment plate is arc-shaped. When the arc-shaped end of the fixing rod contacts the end of the arc-shaped block away from the rotating wheel, the spring is in a compressed state. When the arc-shaped end of the fixing rod away from the arc-shaped block contacts the outside of the rotating wheel, the spring is in a rebound state.

[0013] Preferably, a turntable is rotatably connected to the top of the fixed box, and the bottom of the turntable is fixedly connected to the top of the turntable through a shaft passing through the top of the fixed box.

[0014] Preferably, the top of the turntable is internally threaded with a screw, and the top of the fixing box is provided with a first fixing hole and a second fixing hole. When the bottom of the screw penetrates the interior of the turntable and connects with the interior of the first fixing hole, one end of the arc-shaped block contacts one end of the fixing rod. When the bottom of the screw penetrates the interior of the turntable and connects with the interior of the second fixing hole, one end of the fixing rod contacts the exterior of the turntable.

[0015] The beneficial effects of this utility model are:

[0016] 1. By setting up protective components, a foldable power structure is constructed by setting a connecting block and connecting rod corresponding to the position of the rotor on the top of the fixed base, and setting a motor box and rotor at one end of the connecting rod. This allows for convenient unfolding and storage of the rotor. In the stored state, the rotor can be folded along the connecting rod towards the center seat to form a structure that fits snugly against the fuselage. With the help of a screw-on protective cover, the external covering is completed. Through reasonable layout, the rotor is kept away from the external exposed surface. Even if the fuselage is placed inside the box, the rotor will not be damaged by the impact of the box. This reduces the risk of external impact during transportation or storage, effectively avoids deformation or breakage of the rotor due to collision or squeezing, and improves the overall safety and reliability of the aircraft.

[0017] 2. Through the setting of the fixing component, when using the rotating paddle, the device is equipped with a fixing component consisting of a first alignment plate, a second alignment plate and a sliding fixing rod, which can realize the quick positioning of the connecting block and the connecting rod at a specific angle, thereby facilitating the use of the rotating paddle. One end of the fixing rod is fitted with a spring, which provides self-resetting capability when fixing or releasing, which not only simplifies the operation process, but also increases the stability during use. Furthermore, by setting an arc-shaped block and a rotating wheel mechanism that matches the end of the fixing rod, locking or unlocking operations can be realized after rotating the turntable and adjusting the screw, thereby promoting a stable connection between the connecting block and the connecting rod after they are parallel, thus facilitating the use of the rotating paddle after the connecting rod is unfolded. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0020] Figure 2 This is a schematic diagram demonstrating the overall storage of this utility model;

[0021] Figure 3 This is a schematic diagram demonstrating the folded connection rod of this utility model;

[0022] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0023] Figure 5 This is a schematic diagram of the connection structure between the connecting block and the connecting rod of this utility model;

[0024] Figure 6 This is a schematic diagram of the internal structure of the fixing box of this utility model.

[0025] The diagram is marked as follows:

[0026] 1. Center seat; 2. Connecting seat; 3. Fixing seat; 4. Alignment groove; 5. Fixing box; 6. Connecting block; 7. Connecting rod; 8. Motor box; 9. Rotating paddle; 10. Fixing plate; 11. Protective ring; 12. Hook; 13. Hanging ring; 14. Connecting wire; 15. First alignment plate; 16. Second alignment plate; 17. Fixing rod; 18. Spring; 19. Rotary wheel; 20. Arc block; 21. Turntable; 22. Screw; 23. First fixing hole; 24. Second fixing hole; 25. Protective cover. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0028] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] Such as this utility model Figures 1 to 6 The diagram shows a novel aircraft power unit, including a center base 1. Four fixing plates 10 are fixedly connected to the outside of the center base 1 in a cross shape. Protective rings 11 are fixedly connected to the ends of the four fixing plates 10 away from the center base 1. A rotating propeller 9 is installed in the middle of the inner part of the protective rings 11. A connecting seat 2 is fixedly connected to the inside of the top of the center base 1. A fixing seat 3 is fixedly connected to the middle of the top of the connecting seat 2. A protective component for folding and storing the rotating propeller 9 is provided on the top of the fixing seat 3. The protective component includes four connecting blocks 6 fixedly connected to the top of the fixing seat 3. The positions of the four connecting blocks 6 correspond to the positions of the four fixing plates 10. A connecting rod 7 is rotatably connected to the end of the connecting block 6 away from the fixing seat 3 via a shaft. A motor box 8 is fixedly connected to the end of the connecting rod 7 away from the connecting block 6. The rotating propeller 9 is rotatably connected to the bottom of the motor box 8. A fixing component is provided on the top of the fixing seat 3. The fixing component is used to fix the positions of the connecting blocks 6 and the connecting rod 7.

[0030] By setting up protective components, a foldable power structure is constructed by setting a connecting block 6 and a connecting rod 7 corresponding to the position of the rotary propeller 9 on the top of the fixed base 3, and setting a motor box 8 and the rotary propeller 9 at one end of the connecting rod 7. This allows for convenient unfolding and storage of the rotary propeller 9. In the stored state, the rotary propeller 9 can be folded along the connecting rod 7 towards the center base 1 to form a structure that fits snugly against the aircraft body. The external covering is completed with a screw-on protective cover 25. Through reasonable layout, the rotary propeller 9 is kept away from the external exposed surface. Even if the aircraft body is placed inside the box, the rotary propeller 9 will not be damaged by the impact of the box. This reduces the risk of external impact during transportation or storage, effectively prevents the rotary propeller 9 from deforming or breaking due to collision or squeezing, and improves the overall safety and reliability of the aircraft.

[0031] like Figures 1 to 6 As shown, the center base 1 houses a battery, a control chip, and a drive module. The motor box 8 houses a motor. The output end of the motor passes through the bottom of the motor box 8 and is fixedly connected to the top of the rotating propeller 9. The output end of the battery is electrically connected to the input end of the control chip and the drive module. The output end of the control chip is electrically connected to the input end of the drive module. The output end of the drive module is electrically connected to the input end of the motor via a connecting wire 14. The connecting wire 14 passes through the bottom of the connecting block 6 and the connecting rod 7 from the interior of the center base 1 and connects to the interior of the motor box 8. When the connecting wire 14 passes through the connection point of the connecting block 6 and the connecting rod 7, it passes through the bottom of the connection point. The length of the connecting wire 14 at the connection point of the connecting block 6 and the connecting rod 7 is adapted to the connecting block 6 and the connecting rod 7 for folding.

[0032] By using the connecting line 14, the aircraft's power unit can maintain the integrity of electrical connections and the continuity of power transmission while achieving foldable and retractable propeller 9. The power supply and control core is achieved by setting up a battery, control chip, and drive module inside the center seat 1. The drive module is electrically connected to the motor inside the motor box 8 through the connecting line 14. The motor then drives the propeller 9 to work. The connecting line 14 is laid out along the internal path of the center seat 1, connecting block 6, and connecting rod 7. A suitable line length and wiring space are reserved at the hinge of connecting block 6 and connecting rod 7 so that the connecting line 14 will not be pulled or squeezed when the propeller 9 is folded or unfolded. This ensures that the entire power system can stably supply power and operate under different working conditions, thereby achieving an organic combination of structural retractability and functional integrity.

[0033] like Figures 1 to 5 As shown, when the connecting block 6 and the connecting rod 7 are parallel, the bottom of the connecting rod 7 contacts the top of the protective ring 11. The top of the fixing seat 3 is provided with four alignment grooves 4, and the position of the alignment grooves 4 is located at the bottom of the connection between the connecting block 6 and the connecting rod 7.

[0034] By using the connecting block 6 and connecting rod 7, and by ensuring that the connecting rod 7 contacts the top of the protective ring 11 when unfolded, in normal flight mode, the connecting rod 7 unfolds with the connecting block 6 via a pivot, driving the motor box 8 and the rotor 9 to the unfolded position. The bottom of the connecting rod 7 fits against the top of the protective ring 11 to support the rotor 9, and at the same time quickly positions the connecting rod 7 when unfolded, which facilitates the fixing of the connecting block 6 and the connecting rod 7 by the fixing components. When folding away, the connecting rod 7 folds inward around the pivot of the connecting block 6, bringing the rotor 9 closer to the center of the fixing base 3. At this time, the four connecting rods 7 and the rotor 9 are gathered around the fixing base 3, and the connecting rods 7 and the connecting block 6 are perpendicular to each other, which facilitates subsequent folding away.

[0035] like Figures 1 to 3 As shown, the top of the four connecting rods 7 is movably connected to two hooks 12 and fixedly connected to two hanging rings 13 via circular rings. The two hooks 12 and the two hanging rings 13 are arranged symmetrically in pairs, and the height of one symmetrical hook 12 and hanging ring 13 is different from the height of the other symmetrical hook 12 and hanging ring 13. When the connecting rod 7 is placed vertically to the connecting block 6, the end of the hook 12 away from the connecting rod 7 is hung inside the hanging ring 13.

[0036] With the hooks 12 and hanging rings 13, when the connecting rod 7 is perpendicular to the connecting block 6, the four connecting rods 7 are hooked and fixed to each other through the hooks 12 and the corresponding hanging rings 13. The top of the four connecting rods 7 is provided with two hooks 12 and two hanging rings 13. These hooks 12 and hanging rings 13 are arranged symmetrically, but at slightly different heights, so that they can be staggered and matched during folding to avoid mutual interference. When the connecting rod 7 is placed perpendicular to the connecting block 6, that is, in the folded state, the end of the hook 12 away from the connecting rod 7 can be accurately inserted into the corresponding hanging ring 13 to complete the locking.

[0037] like Figures 2 to 6 As shown, a connecting groove is provided between the center seat 1 and the connecting seat 2. The connecting seat 2 is provided with threads on the outside. When the connecting block 6 and the connecting rod 7 are placed vertically, the protective cover 25 covers the outside of the four connecting rods 7, and the inside of the bottom of the protective cover 25 is connected to the external threads of the connecting seat 2.

[0038] With the protective cover 25 in place, when the aircraft is in storage or not in use, the four connecting rods 7 are vertically folded and retracted to form a relatively concentrated structure. At this time, the protective cover 25 covers the outside of the four connecting rods 7 from above, providing external protection. To ensure that the protective cover 25 can be firmly fixed to the device, its bottom is provided with a threaded structure, which can be screwed into the thread on the outside of the connecting seat 2. A connecting groove is provided between the connecting seat 2 and the center seat 1 to guide and limit the position of the protective cover 25, ensuring that the protective cover 25 is aligned with the threaded position and screwed in smoothly during installation. In this way, when the protective cover 25 is screwed into the connecting seat 2, it not only effectively covers the folded connecting rods 7 and the rotating propeller 9, but also provides reliable fixing force through the threaded connection, preventing loosening due to transportation vibration or external force, thereby improving the overall protection capability of the device during transportation and storage.

[0039] like Figure 5 and Figure 6 As shown, the fixing assembly includes a first alignment plate 15 fixedly connected to the top of one end of the connecting block 6 and a second alignment plate 16 fixedly connected to the top of one end of the connecting rod 7. The first alignment plate 15 and the second alignment plate 16 are at the same height, and a fixing rod 17 is slidably connected between the second alignment plate 16 and the first alignment plate 15.

[0040] With the fixed assembly, when using the rotating paddle 9, the device is equipped with a fixed assembly consisting of a first alignment plate 15, a second alignment plate 16, and a sliding fixed rod 17. This assembly enables the connecting block 6 and the connecting rod 7 to be quickly positioned at a specific angle, thus facilitating the use of the rotating paddle 9. A spring 18 is sleeved on one end of the fixed rod 17, providing self-resetting capability when fixed or released. This not only simplifies the operation process but also increases the stability during use. Furthermore, by setting an arc-shaped block 20 and a rotating wheel 19 mechanism that match the end of the fixed rod 17, locking or unlocking operations can be achieved after rotating the turntable 21 and adjusting the screw 22. This ensures a stable connection between the connecting block 6 and the connecting rod 7 after they are parallel, thus facilitating the use of the rotating paddle 9 after the connecting rod 7 is unfolded.

[0041] like Figures 3 to 6As shown, a spring 18 is sleeved on the outside of one end of the fixing rod 17. One end of the spring 18 is fixedly connected to one side of the first alignment plate 15, and the other end of the spring 18 is fixedly connected to the outside of one end of the fixing rod 17. When the spring 18 rebounds, one end of the fixing rod 17 moves away from the inside of the second alignment plate 16, and the position of the fixing rod 17 moving away from the second alignment plate 16 corresponds to the position of the connecting block 6 moving away from the fixed seat 3. A fixing box 5 is fixedly connected inside the top of the fixed seat 3. A rotating wheel 19 is rotatably connected to the middle of the inside of the fixing box 5. Four arc-shaped blocks 20 are fixedly connected to the outside of the rotating wheel 19 in a cross shape. The shape of the end of the fixing rod 17 away from the second alignment plate 16 is arc-shaped. When the arc-shaped end of the fixing rod 17 contacts the end of the arc-shaped block 20 away from the rotating wheel 19, the spring 18 is in a compressed state. When the arc-shaped end of the fixing rod 17 away from the arc-shaped block 20 contacts the outside of the rotating wheel 19, the spring 18 is in a rebound state.

[0042] With the set rotating wheel 19 and arc-shaped block 20, when the connecting rod 7 is being stored, that is, when the connecting rod 7 is perpendicular to the connecting block 6, the rotating wheel 19 is rotated first, causing one end of the arc-shaped block 20 to move away from one end of the fixed rod 17. At this time, the spring 18 automatically rebounds, causing the spring 18 to bring one end of the fixed rod 17 into contact with the outside of the rotating wheel 19. At this time, the other end of the fixed rod 17 will move away from the inside of the second alignment plate 16 and be parallel to the end of the connecting block 6 away from the fixed seat 3, thus facilitating the folding of the connecting rod 7. At the same time, it can also avoid the problem of the fixed rod 17 blocking the folding of the connecting rod 7. After that, when the connecting rod 7 is folded, the connecting rod 7 can be folded. When the connecting rod 7 is parallel to the connecting block 6, that is, when the connecting rod 7 is in the unfolded state, the position of the second alignment plate 16 corresponds to the position of the first alignment plate 15. At this time, by rotating the wheel 19 in the opposite direction, the arc block 20 is continuously pressed against one end of the fixed rod 17 while the spring 18 is contracted. When the end of the arc block 20 away from the wheel 19 is completely pressed against the end of the fixed rod 17, the end of the fixed rod 17 away from the spring 18 will be inserted into the interior of the second alignment plate 16, thereby causing the connecting block 6 and the connecting rod 7 to be stably connected through the fixed rod 17, thus facilitating the use of the aircraft.

[0043] like Figure 5 and Figure 6 As shown, a turntable 21 is rotatably connected to the top of the fixed box 5. The bottom of the turntable 21 is fixedly connected to the top of the rotating wheel 19 through the top of the fixed box 5 via a shaft. A screw 22 is threadedly connected to the top of the turntable 21. The top of the fixed box 5 is provided with a first fixing hole 23 and a second fixing hole 24. When the bottom of the screw 22 passes through the interior of the turntable 21 and is connected to the interior of the first fixing hole 23, one end of the arc-shaped block 20 contacts one end of the fixing rod 17. When the bottom of the screw 22 passes through the interior of the turntable 21 and is connected to the interior of the second fixing hole 24, one end of the fixing rod 17 contacts the exterior of the rotating wheel 19.

[0044] By using a turntable 21 and a screw 22, the turntable 21 drives the rotating wheel 19 to rotate, thereby switching the contact state between the arc-shaped block 20 and the fixed rod 17. This controls the position of the fixed rod 17 and the compression or rebound state of the spring 18. The turntable 21 is fixedly connected to the rotating wheel 19 via a shaft, and an adjustable screw 22 is installed on its top. The screw 22 can be screwed into the first fixing hole 23 or the second fixing hole 24 on the top of the fixed box 5. When the screw 22 is connected to the first fixing hole 23, the turntable 21 drives the rotating wheel 19 to make one end of the arc-shaped block 20 contact the fixed rod 17, thereby compressing the spring 18. When the screw 22 is connected to the second fixing hole 24, the rotating wheel 19 rotates, causing the arc-shaped block 20 to move away from the fixed rod 17. The fixed rod 17 then contacts the outer edge of the rotating wheel 19, the spring 18 rebounds, and the fixed rod 17 shifts. This principle enables controllable switching of the working state of the fixed rod 17, effectively improving the stability and adjustment convenience of the structure.

[0045] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0046] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel aircraft propulsion system, characterized in that, The device includes a center seat (1), on which four fixing plates (10) are fixedly connected in a cross shape. Each of the four fixing plates (10) is fixedly connected to a protective ring (11) at one end away from the center seat (1). A rotating paddle (9) is installed in the middle of the inner part of the protective ring (11). A connecting seat (2) is fixedly connected to the inside of the top of the center seat (1). A fixing seat (3) is fixedly connected to the middle of the top of the connecting seat (2). A protective component for folding and storing the rotating paddle (9) is provided on the top of the fixing seat (3). The protective component includes four connecting blocks (6) fixedly connected to the top of the fixing seat (3). The positions of the four connecting blocks (6) correspond to the positions of the four fixing plates (10). A connecting rod (7) is rotatably connected to the end of the connecting block (6) away from the fixing seat (3) via a shaft. A motor box (8) is fixedly connected to the end of the connecting rod (7) away from the connecting block (6). The rotating paddle (9) is rotatably connected to the bottom of the motor box (8). The top of the fixing base (3) is provided with a fixing component, which is used to fix the position of the connecting block (6) and the connecting rod (7).

2. The novel aircraft propulsion system according to claim 1, characterized in that, The center seat (1) is equipped with a battery, a control chip and a drive module. The motor box (8) is equipped with a motor. The output end of the motor passes through the bottom of the motor box (8) and is fixedly connected to the top of the rotating paddle (9). The output end of the battery is electrically connected to the input end of the control chip and the drive module. The output end of the control chip is electrically connected to the input end of the drive module. The output end of the drive module is electrically connected to the input end of the motor through a connecting line (14). The connecting line (14) passes through the bottom of the connecting block (6) and the connecting rod (7) from the inside of the center seat (1) and connects to the inside of the motor box (8). When the connecting line (14) passes through the connection point of the connecting block (6) and the connecting rod (7), it passes through the bottom of the connection point of the connecting block (6) and the connecting rod (7). The length of the connecting line (14) at the connection point of the connecting block (6) and the connecting rod (7) is adapted to the connecting block (6) and the connecting rod (7) for folding.

3. The novel aircraft propulsion system according to claim 1, characterized in that, When the connecting block (6) and the connecting rod (7) are parallel, the bottom of the connecting rod (7) contacts the top of the protective ring (11). The top of the fixed seat (3) is provided with four alignment grooves (4). The alignment grooves (4) are located at the bottom of the connection between the connecting block (6) and the connecting rod (7).

4. A novel aircraft propulsion system according to claim 3, characterized in that, The top of the four connecting rods (7) is movably connected to two hooks (12) and fixedly connected to two hanging rings (13) via circular rings. The two hooks (12) and the two hanging rings (13) are arranged symmetrically in pairs, and the height of one symmetrical hook (12) and hanging ring (13) is different from the height of the other symmetrical hook (12) and hanging ring (13). When the connecting rod (7) is placed vertically to the connecting block (6), the end of the hook (12) away from the connecting rod (7) is hung inside the hanging ring (13).

5. A novel aircraft propulsion system according to claim 4, characterized in that, A connecting groove is provided between the center seat (1) and the connecting seat (2). The connecting seat (2) is provided with threads on the outside. When the connecting block (6) and the connecting rod (7) are placed vertically, the protective cover (25) covers the outside of the four connecting rods (7), and the inside of the bottom of the protective cover (25) is connected to the external threads of the connecting seat (2).

6. The novel aircraft propulsion system according to claim 1, characterized in that, The fixing assembly includes a first alignment plate (15) fixedly connected to the top of one end of the connecting block (6) and a second alignment plate (16) fixedly connected to the top of one end of the connecting rod (7). The first alignment plate (15) and the second alignment plate (16) are at the same height, and a fixing rod (17) is slidably connected between the second alignment plate (16) and the first alignment plate (15).

7. A novel aircraft propulsion system according to claim 6, characterized in that, A spring (18) is sleeved on the outside of one end of the fixing rod (17). One end of the spring (18) is fixedly connected to one side of the first alignment plate (15), and the other end of the spring (18) is fixedly connected to the outside of one end of the fixing rod (17). When the spring (18) rebounds, one end of the fixing rod (17) moves away from the inside of the second alignment plate (16), and the position of the fixing rod (17) moving away from the second alignment plate (16) corresponds to the position of the connecting block (6) moving away from the fixed seat (3).

8. A novel aircraft propulsion system according to claim 7, characterized in that, The fixed base (3) is fixedly connected to the top of the fixed box (5). The fixed box (5) is rotatably connected to the middle of the center. The outside of the fixed box (19) is fixedly connected to four arc blocks (20) in a cross shape. The fixed rod (17) is arc-shaped at the end away from the second alignment plate (16). When the arc-shaped end of the fixed rod (17) contacts the end of the arc block (20) away from the rotating wheel (19), the spring (18) is in a compressed state. When the arc-shaped end of the fixed rod (17) away from the arc block (20) contacts the outside of the rotating wheel (19), the spring (18) is in a rebound state.

9. A novel aircraft propulsion system according to claim 8, characterized in that, The top of the fixed box (5) is rotatably connected to a turntable (21), and the bottom of the turntable (21) is fixedly connected to the top of the wheel (19) through a shaft passing through the top of the fixed box (5).

10. A novel aircraft propulsion system according to claim 9, characterized in that, The top of the turntable (21) is internally threaded with a screw (22). The top of the fixing box (5) is provided with a first fixing hole (23) and a second fixing hole (24). When the bottom of the screw (22) penetrates the interior of the turntable (21) and connects with the interior of the first fixing hole (23), one end of the arc block (20) contacts one end of the fixing rod (17). When the bottom of the screw (22) penetrates the interior of the turntable (21) and connects with the interior of the second fixing hole (24), one end of the fixing rod (17) contacts the exterior of the wheel (19).

Images