Improved structure of spherical thrust vectoring nozzle

Abstract

The utility model relates to an improved structure of a spherical thrust vectoring nozzle, which comprises a fixed nozzle, a rotary nozzle and an inner flow guide ring, the fixed nozzle comprises a fixed part and a first spherical surface part, the fixed part is connected with the first spherical surface part, a first flow channel is arranged in the fixed nozzle, the first flow channel penetrates through the fixed part and the first spherical surface part, and the first flow channel is connected with the rotary nozzle. A first spherical groove matched with the inner flow guide ring is formed in the inner wall of the first spherical surface part, the inner flow guide ring is arranged in the first spherical groove, the rotary spraying pipe comprises an air spraying part and a second spherical surface part, the air spraying part is connected with the second spherical surface part, a second flow channel is formed in the rotary spraying pipe, and the second flow channel is communicated with the first flow channel. The second flow channel penetrates through the air injection part and the second spherical surface part, a second spherical groove matched with the first spherical surface part is formed in the inner wall of the second spherical surface part, the first spherical surface part is in close fit butt joint with the second spherical groove in a rolling mode, the first flow channel is communicated with the second flow channel, and the rotary spray pipe is rotationally arranged on the fixed spray pipe.

Description

Technical Field

[0001] The utility model relates to the field of aviation models, in particular to an improved structure of a spherical vector nozzle. Background Art

[0002] Existing jet model aircraft have nozzles installed inside that cannot rotate, resulting in a fixed direction of the ejected airflow and poor maneuverability. For example, in a modified structure of a spherical vectoring nozzle, as disclosed in Chinese Patent Publication No. CN209942967U, a rotating nozzle rotates within a fixed nozzle, allowing the jet model aircraft to arbitrarily change the direction of the airflow ejected, thereby improving the aircraft's maneuverability and enabling it to perform maneuvers not possible with existing model aircraft, achieving the purpose of thrust vectoring. However, in this patent, because the rotating nozzle rotates within the fixed nozzle, its rotational range is limited, preventing it from completing a wide range of flight scenarios. Furthermore, when the rotating nozzle is within the fixed nozzle, a step is formed between the rotating nozzle and the fixed nozzle, obstructing the flow. This influences the rotation of the rotating nozzle, thus reducing its maneuverability. Utility Model Content

[0003] In order to solve the above problems, the utility model provides an improved structure of a spherical vector nozzle.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: the present invention relates to an improved structure of a spherical vector nozzle, including a fixed nozzle, a rotating nozzle and an inner guide ring, the fixed nozzle including a fixed part and a first spherical part, the fixed part is connected to the first spherical part, a first flow channel is provided in the fixed nozzle, the first flow channel runs through the fixed part and the first spherical part, the inner wall of the first spherical part is provided with a first spherical groove matching the inner guide ring, the inner guide ring is arranged in the first spherical groove, the rotating nozzle includes an injection part and a second spherical part, the injection part is connected to the second spherical part, a second flow channel is provided in the rotating nozzle, the second flow channel runs through the injection part and the second spherical part, the inner wall of the second spherical part is provided with a second spherical groove matching the first spherical part, the first spherical part can be rolled and tightly matched with the second spherical groove to communicate the first flow channel with the second flow channel, and the rotating nozzle can be rotatably arranged on the fixed nozzle.

[0005] Preferably, the outer surface of the first spherical portion has the same curvature as the wall of the second spherical groove, the wall of the second spherical groove fits the outer surface of the first spherical portion, and the second spherical groove can rotate 360 ​​degrees along the first spherical portion.

[0006] Preferably, the second spherical portion is provided with a guide groove, and the first spherical portion is provided with a positioning block that can slide along the guide groove.

[0007] Preferably, the rotating nozzle is provided with a pair of swing arms, which are respectively arranged on the outer surface of the second spherical portion of the rotating nozzle and are radially distributed in at least two different directions.

[0008] Preferably, the swing arm is hinged to a pull rod, and the pull rod is connected to a steering gear.

[0009] Preferably, the fixed nozzle comprises a fixed nozzle upper cover and a fixed nozzle lower cover, and the fixed nozzle upper cover is fixed to the fixed nozzle lower cover by screws.

[0010] Preferably, the rotating nozzle comprises a rotating nozzle upper cover and a rotating nozzle lower cover, and the rotating nozzle upper cover is fixed to the rotating nozzle lower cover by screws.

[0011] Preferably, the inner guide ring includes an inner guide ring upper cover and an inner guide ring lower cover, and the inner guide ring upper cover is fixed to the inner guide ring lower cover by screws.

[0012] The beneficial effect of the present invention is that the present invention relates to an improved structure of a spherical vector nozzle. In the present invention, the rotating nozzle is rotated outside the fixed nozzle, the outer surface of the first spherical portion has the same curvature as the wall of the second spherical groove, and the wall of the second spherical groove fits the outer surface of the first spherical portion, so that the second spherical groove can rotate 360 ​​degrees along the first spherical portion, thereby achieving an increase in the rotation amplitude in a smaller space and increasing the ability of the model aircraft to change its flight direction.

[0013] At the same time, in the present invention, since the rotating nozzle is outside the fixed nozzle, no step that blocks the fluid is formed between the rotating nozzle and the fixed nozzle, which reduces the internal air resistance of the vector nozzle and improves the flight speed of the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the spherical vector nozzle of the utility model.

[0015] Figure 2 This is a schematic diagram of the assembly structure of the spherical vector nozzle of the utility model.

[0016] Figure 3 It is a structural schematic diagram of the fixed nozzle of the utility model.

[0017] Figure 4 It is a structural schematic diagram of the rotary nozzle of the utility model.

[0018] Figure 5 It is a structural diagram of the inner guide ring of the utility model.

[0019] Figure 6 It is a schematic diagram of the disassembly of the fixed nozzle and the rotating nozzle of the utility model.

[0020] Figure 7 It is a schematic diagram of the assembled fixed nozzle and the rotating nozzle of the utility model.

[0021] Figure 8 The utility model is a schematic diagram of the spherical vector nozzle when it is applied to a model aircraft.

[0022] Figure 9 This utility model Figure 8 The structural diagram of the servo at A in the middle is connected to the swing arm through a pull rod.

[0023] Reference numerals

[0024] 1. Fixed nozzle; 11. Fixed portion; 12. First spherical portion; 13. First spherical groove; 14. First flow channel; 15. Positioning block; 16. Fixed nozzle upper cover; 17. Fixed nozzle lower cover;

[0025] 2. Rotating nozzle; 21. Jet portion; 22. Second spherical portion; 23. Second spherical groove; 24. Second flow channel; 25. Guide groove; 26. Rotating nozzle upper cover; 27. Rotating nozzle lower cover; 28. Swing arm;

[0026] 3. Inner guide ring; 31. Inner guide ring upper cover; 32. Inner guide ring lower cover; 4. Pull rod; 5. Servo;

[0027] 100. Spherical vector nozzle; 200. Model aircraft; DETAILED DESCRIPTION

[0028] See also Figure 1-9 As shown, the utility model relates to an improved structure of a spherical vector nozzle. The spherical vector nozzle 100 is mainly used on a jet model aircraft 200. It includes a fixed nozzle 1, a rotating nozzle 2 and an inner guide ring 3. The fixed nozzle 1 includes a fixed portion 11 and a first spherical portion 12. The fixed portion 11 is connected to the first spherical portion 12. A first flow channel 14 is provided in the fixed nozzle 1. The first flow channel 14 passes through the fixed portion 11 and the first spherical portion 12. The inner wall of the first spherical portion 12 is provided with a first spherical groove 13 that matches the inner guide ring 3. The inner guide ring 3 is arranged in the first spherical groove 13; the rotating nozzle 2 includes an air injection portion 21 and a second spherical portion 22, the air injection portion 21 is connected to the second spherical portion 22, and a second flow channel 24 is provided in the rotating nozzle 2, the second flow channel 24 passes through the air injection portion 21 and the second spherical portion 22, and the inner wall of the second spherical portion 22 is provided with a second spherical groove 23 that matches the first spherical portion 12; the first spherical portion 12 can be rollably connected to the second spherical groove 23, so that the first flow channel 14 and the second flow channel 24 are connected, and the rotating nozzle 2 is rotatably arranged on the fixed nozzle 1.

[0029] To facilitate assembly of the spherical vectoring nozzle 100, in this embodiment, the fixed nozzle 1 includes a fixed nozzle upper cover 16 and a fixed nozzle lower cover 17. The fixed nozzle upper cover 16 is mounted on the fixed nozzle lower cover 17. The rotating nozzle 2 includes a rotating nozzle upper cover 26 and a rotating nozzle lower cover 27. The rotating nozzle upper cover 26 is mounted on the rotating nozzle lower cover 27. The inner guide ring 3 includes an inner guide ring upper cover 31 and an inner guide ring lower cover 32. The inner guide ring upper cover 31 is mounted within the inner nozzle 16, and the inner guide ring lower cover 32 is mounted within the inner nozzle 17.

[0030] To assemble the spherical vectoring nozzle 100, the inner guide ring upper cover 31 is glued into the first spherical groove 13 of the inner nozzle 16, and the guide ring lower cover 32 is glued into the first spherical groove 13 of the inner nozzle 17. The fixed nozzle upper cover 16 is placed on the fixed nozzle lower cover 17 and tightened with screws. Then, the first spherical portion 12 of the fixed nozzle 1 is placed in the second spherical groove 23 of the rotating nozzle lower cover 27. The rotating nozzle upper cover 26 is placed on the rotating nozzle lower cover 27 and tightened with screws, completing the assembly of the spherical vectoring nozzle 100.

[0031] In the present invention, the outer surface of the first spherical portion 12 has the same curvature as the wall of the second spherical groove 23, and the wall of the second spherical groove 23 fits the outer surface of the first spherical portion 12. At the same time, the center positions of the first spherical portion 12 and the second spherical portion 22 are consistent. The second spherical groove 23 can rotate 360 ​​degrees along the first spherical portion 12, so that the rotating nozzle 2 can achieve vector deflection outside the fixed nozzle 1.

[0032] To prevent the rotating nozzle 2 from overtraveling during vector deflection of the fixed nozzle 1, the second spherical portion 22 of the rotating nozzle lower cover 27 is further provided with a guide groove 25, and the first spherical portion 12 of the fixed nozzle lower cover 17 is provided with a positioning block 15 that can slide along the guide groove 25. When the rotating nozzle 2 is placed on the fixed nozzle 1, the positioning block 15 is engaged in the guide groove 25. When the rotating nozzle 2 is installed on the fixed nozzle 1, the positioning block 15 slides along the guide groove 25, thereby limiting the rotational position of the rotating nozzle 2 and providing guidance.

[0033] Furthermore, the rotating nozzle lower cover 27 is provided with a pair of swing arms 28. These swing arms 28 are respectively disposed on the outer surface of the second spherical portion 22 of the rotating nozzle lower cover 27 and are radially distributed in at least two different directions. The swing arms 28 are hingedly connected to the pull rod 4, which is connected to the steering gear 5. In this embodiment, the steering gear 5 controls the pull rod 4 to swing back and forth, and the pull rod 4 pulls the swing arms 28 to swing back and forth, thereby controlling the rotating nozzle 2 to achieve horizontal or vertical rotation, thereby changing the orientation of the rotating nozzle 2.

[0034] The present invention relates to an improved structure of a spherical vector nozzle. In the present invention, the rotating nozzle 2 is rotated outside the fixed nozzle 1. The outer surface of the first spherical portion 12 has the same curvature as the wall of the second spherical groove 23. The wall of the second spherical groove 23 fits the outer surface of the first spherical portion 12, so that the second spherical groove 23 can rotate 360 ​​degrees along the first spherical portion 12, thereby increasing the rotation amplitude in a smaller space and increasing the ability of the model aircraft 200 to change the flight direction.

[0035] In the present invention, since the rotating nozzle 2 is outside the fixed nozzle 1, there is no step between the rotating nozzle 2 and the fixed nozzle 1 to block the fluid, which solves the problem of fluid obstruction inside the vector nozzle, thereby effectively improving the flight speed of the aircraft and the maneuverability of the rotating nozzle 2 when rotating.

[0036] The above embodiments are merely descriptions of preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. An improved structure of a spherical vector nozzle, characterized by: The invention comprises a fixed nozzle, a rotating nozzle and an inner guide ring, wherein the fixed nozzle comprises a fixed portion and a first spherical portion, the fixed portion is connected to the first spherical portion, a first flow channel is provided in the fixed nozzle, the first flow channel passes through the fixed portion and the first spherical portion, the inner wall of the first spherical portion is provided with a first spherical groove matching the inner guide ring, and the inner guide ring is arranged in the first spherical groove, the rotating nozzle comprises an air jet portion and a second spherical portion, the air jet portion is connected to the second spherical portion, a second flow channel is provided in the rotating nozzle, the second flow channel passes through the air jet portion and the second spherical portion, the inner wall of the second spherical portion is provided with a second spherical groove matching the first spherical portion, the first spherical portion is rollably connected to the second spherical groove to communicate the first flow channel with the second flow channel, and the rotating nozzle is rotatably arranged on the fixed nozzle.

2. The improved structure of a spherical vector nozzle according to claim 1, characterized in that: The outer surface of the first spherical portion has the same curvature as the wall of the second spherical groove, the wall of the second spherical groove fits the outer surface of the first spherical portion, and the second spherical groove can rotate 360 ​​degrees along the first spherical portion.

3. The improved structure of a spherical vector nozzle according to claim 1, characterized in that: The second spherical portion is provided with a guide groove, and the first spherical portion is provided with a positioning block that can slide along the guide groove.

4. The improved structure of a spherical vector nozzle according to claim 1, characterized in that: The rotating nozzle is provided with a pair of swing arms, which are respectively arranged on the outer surface of the second spherical portion of the rotating nozzle and are radially distributed in at least two different directions.

5. The improved structure of a spherical vector nozzle according to claim 4, characterized in that: The swing arm is hinged to the pull rod, and the pull rod is connected to the steering gear.

6. The improved structure of a spherical vector nozzle according to claim 1, characterized in that: The fixed nozzle comprises a fixed nozzle upper cover and a fixed nozzle lower cover, and the fixed nozzle upper cover is fixed to the fixed nozzle lower cover by screws.

7. The improved structure of a spherical vector nozzle according to claim 1, characterized in that: The rotating nozzle comprises a rotating nozzle upper cover and a rotating nozzle lower cover, and the rotating nozzle upper cover is fixed to the rotating nozzle lower cover by screws.

8. The improved structure of a spherical vector nozzle according to claim 1, characterized in that: The inner guide ring includes an inner guide ring upper cover and an inner guide ring lower cover, and the inner guide ring upper cover is fixed to the inner guide ring lower cover by screws.

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