CN119659930A - An adjustable deceleration device - Google Patents
An adjustable deceleration device Download PDFInfo
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- CN119659930A CN119659930A CN202411883615.3A CN202411883615A CN119659930A CN 119659930 A CN119659930 A CN 119659930A CN 202411883615 A CN202411883615 A CN 202411883615A CN 119659930 A CN119659930 A CN 119659930A
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- clamping plate
- grid
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- grid sleeve
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Abstract
The application belongs to the technical field of aircrafts, and particularly relates to an adjustable speed reducer. The device comprises a grid sleeve, a grid sleeve actuator, a clamping plate actuator and a clamping plate actuator, wherein a sliding rail track and a grid sleeve joint are arranged on the grid sleeve, one end of the grid sleeve actuator is connected with an aircraft, the other end of the grid sleeve actuator is connected with the grid sleeve joint, a sliding rail rod and the clamping plate joint are arranged on the clamping plate, the clamping plate is nested inside the grid sleeve, the sliding rail rod of the clamping plate is slidably arranged in the sliding rail track of the grid sleeve, and one end of the clamping plate actuator is connected with the aircraft, and the other end of the clamping plate actuator is connected with the clamping plate joint. The application can realize the adjustment of the speed reduction effect by utilizing the movement of the clamping plate, is easy to open under high altitude and large Mach number, is not easy to deform after being opened, can improve the retraction problem of the speed reduction device under high altitude and high speed, can realize the change of the resistance increasing amount by the design of the grid sleeve-clamping plate, saves the structure weight and reduces the design difficulty.
Description
Technical Field
The application belongs to the technical field of aircrafts, and particularly relates to an adjustable speed reducer.
Background
The deceleration strip on board aircraft is used to assist in decelerating the aircraft, primarily by increasing the flight drag. In particular, when a fighter is in high altitude deceleration motion and approaches to landing, the flight speed of the fighter needs to be reduced by using a deceleration plate, which is an important means of pneumatic deceleration.
However, the conventional speed reducing plate is limited in use. The speed reducing plate is opened along the reverse airflow direction under the high altitude and large Mach number, and the speed reducing plate is subjected to huge pneumatic load, so that the speed reducing plate can not be opened or is easy to deform, damage and lose efficacy after being opened, and the use at the high altitude is greatly limited. And the speed reducing plate is usually only provided with a fixed deflection angle, so that the requirement of different resistance increment along with different use speeds cannot be met.
In order to solve the problems that the speed reducing plate is not easy to open, the structure is damaged, the resistance is increased variably and the use is affected in the using process of the speed reducing plate, thereby avoiding the occurrence of accidents and becoming the technical problem to be solved in the field.
It is therefore desirable to have a solution that overcomes or at least alleviates at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The object of the present application is to provide an adjustable reduction gear that solves at least one of the problems of the prior art.
The technical scheme of the application is as follows:
An adjustable speed reduction device comprising:
The grid sleeve is provided with a sliding rail track and a grid sleeve joint;
The device comprises a grating sleeve actuator, wherein one end of the grating sleeve actuator is connected with an aircraft, and the other end of the grating sleeve actuator is connected with a grating sleeve joint;
the clamping plate is provided with a sliding rail rod and a clamping plate connector, the clamping plate is nested inside the grid sleeve, and the sliding rail rod of the clamping plate is slidably arranged in the sliding rail of the grid sleeve;
And one end of the clamping plate actuator is connected with the aircraft, and the other end of the clamping plate actuator is connected with the clamping plate connector.
In at least one embodiment of the present application, the grill cover has a rectangular parallelepiped shape having a receiving cavity and one side is opened.
In at least one embodiment of the present application, the grid housing includes a front grid plate, a rear grid plate, an upper sealing plate, a lower sealing plate, a left sealing plate, and a right sealing plate.
In at least one embodiment of the present application, the sliding rail track is disposed on an upper sealing plate and a lower sealing plate of the grid sleeve, respectively.
In at least one embodiment of the application, the length of the sled track is greater than the length of the grid sleeve.
In at least one embodiment of the present application, the grill cover joint is arranged in plurality in the height direction of the grill cover.
In at least one embodiment of the present application, the clamping plate is rectangular parallelepiped in shape.
In at least one embodiment of the application, the slide rail bars are disposed one at the top and bottom of the clamping plate, respectively.
In at least one embodiment of the application, the length of the slide rail is greater than the length of the cleat.
In at least one embodiment of the application, the cleat engagement is disposed at an intermediate location on one side of the cleat.
In at least one embodiment of the present application, a grille cover link is mounted on the grille cover actuator, and the grille cover actuator is hinged to the grille cover joint through the grille cover link.
In at least one embodiment of the present application, the clamp plate actuator is mounted with a clamp plate link, and the clamp plate actuator is hinged to the clamp plate joint through the clamp plate link.
In at least one embodiment of the application, the adjustment of the resistance increment is achieved by adjusting the overlap area of the grid sleeve and the clamping plate to change the resistance coefficient.
The invention has at least the following beneficial technical effects:
The adjustable speed reducer can realize adjustment of the speed reducing effect by utilizing the movement of the clamping plate 2, has simple structure, high strength and no use limitation.
Drawings
FIG. 1 is a schematic view of a grill cover according to an embodiment of the present application;
FIG. 2 is a schematic view of a splint according to one embodiment of the present application;
FIG. 3 is a schematic view of the assembly of a grid sleeve and clamping plates in accordance with one embodiment of the present application;
Fig. 4 is a schematic view of the operation state of the adjustable speed reduction device according to one embodiment of the present application.
Wherein:
1-grating sleeve, 2-clamping plate, 3-sliding rail, 4-sliding rail rod, 5-grating sleeve joint, 6-clamping plate joint, 7-grating sleeve actuator, 8-clamping plate connecting rod, 9-grating sleeve connecting rod and 10-clamping plate actuator.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application become more apparent, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the application. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application. Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present application.
The application is described in further detail below with reference to fig. 1 to 4.
The application provides an adjustable speed reducer which comprises a grid sleeve 1, a grid sleeve actuator 7, a clamping plate 2 and a clamping plate actuator 10.
Specifically, as shown in fig. 1, a slide rail track 3 and a grille cover joint 5 are arranged on the grille cover 1, one end of the grille cover actuator 7 is connected with the aircraft, and the other end is connected with the grille cover joint 5.
In this embodiment, the grid cover 1 is a cuboid shape with a receiving cavity and an opening at one side, and the grid cover 1 may include a front grid plate, a rear grid plate, an upper sealing plate, a lower sealing plate, a left sealing plate and a right sealing plate, where the opening is disposed on the left sealing plate. The front grating plate and the rear grating plate are respectively formed by interlacing transverse gratings and vertical gratings. The slide rail track 3 is respectively arranged on the inner sides of the upper sealing plate and the lower sealing plate of the grid sleeve 1, wherein the length of the slide rail track 3 is greater than that of the grid sleeve 1. The grill cover joint 5 is arranged in plurality in the height direction on the left sealing plate of the grill cover 1.
In this embodiment, the grille cover actuator 7 is provided with the grille cover connecting rod 9, and the grille cover actuator 7 is hinged with the grille cover joint 5 through the grille cover connecting rod 9.
As shown in fig. 2, a slide rail rod 4 and a clamp joint 6 are arranged on the clamp plate 2, the clamp plate 2 is nested in the grid sleeve 1, the slide rail rod 4 of the clamp plate 2 is slidably arranged in the slide rail track 3 of the grid sleeve 1, one end of a clamp plate actuator 10 is connected with an aircraft, and the other end of the clamp plate actuator is connected with the clamp joint 6.
In this embodiment, the clamping plate 2 has a rectangular parallelepiped shape. The rail rods 4 are arranged one at the top and at the bottom of the clamping plate 2, respectively, wherein the length of the rail rods 4 is greater than the length of the clamping plate 2. The splint coupling 6 is provided at an intermediate position on one side of the splint 2.
In this embodiment, the clamping plate connecting rod 8 is installed on the clamping plate actuator 10, and the clamping plate actuator 10 is hinged with the clamping plate connector 6 through the clamping plate connecting rod 8.
The adjustable speed reducer of the application, as shown in figure 3, connects the grid cover 1 and the clamping plate 2 through the cooperation of the slide rail track 3 and the track rod 4.
According to the adjustable speed reducer disclosed by the application, as shown in fig. 4, the grid sleeve actuator 7 is controlled to push the grid sleeve 1 to extend out of the outer surface of the aircraft through the grid sleeve connecting rod 9, the flight resistance is increased to help the aircraft to reduce speed, the clamping plate actuator 10 is controlled to drive the clamping plate connecting rod 8 to drag or push the clamping plate 2 to move in a translational mode in the grid sleeve 1 along the sliding rail track 3, and the overlapping area of the clamping plate 2 and the grid sleeve 1 is changed.
The adjustable speed reducer of the application has a resistance increment D of:
Wherein ρ is the atmospheric density, v is the airflow velocity, S is the frontal area, and C D is the drag coefficient.
The resistance coefficient C D in the formula is changed by adjusting the superposition area of the grid sleeve 1 and the clamping plate 2, so that the adjustment of the resistance increment is realized.
Because the resistance increment of the conventional speed reducing plate is fixed, the speed reducing plate can be generally used at a certain speed, and the application range of the speed reducing plate can be enlarged.
In the general process of opening the speed reducing plate, the speed reducing plate is opposite to the forward air flow direction, so that under the condition of large rapid compression, the hinge moment is large and the speed reducing plate cannot be opened. The application has the advantages that when the device is not opened, the state that the overlapping area of the grid sleeve 1 and the clamping plate 2 is 0 (namely, the state that the overlapping area is minimum) is used, the passing performance of certain air flow is maintained, and the risk that the speed reducing plate is not opened under high-speed pressure is reduced.
The adjustable speed reducer adopts a double-layer grid framework and a middle filling pneumatic expansion plate structure. The size of the overlapping area of the clamping plate 2 and the grid sleeve 1 can be adjusted to realize different resistance increase and speed reduction of the aircraft under different states (flying speed, configuration and gesture), the yaw gesture of the aircraft can be adjusted, the rudder compensation function is realized, and the engineering realizability is strong.
The adjustable speed reducer of the present application can realize adjustment of the speed reducing effect by using the movement of the clamping plate 2. Is easy to open under high altitude and large Mach number, is not easy to deform after being opened, can improve the retraction problem of the speed reducer under high altitude and high speed, through the design of grid cover-splint, can realize increasing the change of resistance, practice thrift structure weight, reduce the design degree of difficulty.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (13)
1. An adjustable speed reduction device, comprising:
The device comprises a grid sleeve (1), wherein a sliding rail track (3) and a grid sleeve joint (5) are arranged on the grid sleeve (1);
the system comprises a grid sleeve actuator (7), wherein one end of the grid sleeve actuator (7) is connected with an aircraft, and the other end of the grid sleeve actuator is connected with a grid sleeve joint (5);
The clamping plate (2), be provided with slide rail pole (4) and clamping plate joint (6) on clamping plate (2), clamping plate (2) nest in grid cover (1) is inside, slide rail pole (4) slidable mounting of clamping plate (2) is in slide rail track (3) of grid cover (1);
And one end of the clamping plate actuator (10) is connected with the aircraft, and the other end of the clamping plate actuator (10) is connected with the clamping plate joint (6).
2. An adjustable speed reducer according to claim 1, wherein the grid sleeve (1) is of a rectangular parallelepiped shape with a receiving cavity and open on one side.
3. An adjustable speed reducer according to claim 2, wherein the grid casing (1) comprises a front grid plate, a rear grid plate, an upper sealing plate, a lower sealing plate, a left sealing plate and a right sealing plate.
4. An adjustable reduction gear according to claim 3, characterized in that the slide rail track (3) is provided in one of the upper and lower sealing plates of the grid casing (1), respectively.
5. An adjustable speed reduction device according to claim 4, characterized in that the length of the slide rail track (3) is greater than the length of the grid sleeve (1).
6. An adjustable speed reducer according to claim 5, characterized in that the grille cover joint (5) is arranged in plurality in the height direction of the grille cover (1).
7. An adjustable reduction gear according to claim 6, characterized in that the clamping plate (2) is rectangular in shape.
8. Adjustable reduction gear according to claim 7, characterized in that the slide rail rods (4) are provided one at the top and bottom of the clamping plate (2), respectively.
9. An adjustable speed reduction device according to claim 8, wherein the length of the slide rail rod (4) is greater than the length of the clamping plate (2).
10. Adjustable reduction gear according to claim 9, characterized in that the cleat engagement (6) is arranged in an intermediate position on one side of the cleat (2).
11. The adjustable speed reducer according to claim 10, wherein the grille cover actuator (7) is provided with a grille cover connecting rod (9), and the grille cover actuator (7) is hinged with the grille cover joint (5) through the grille cover connecting rod (9).
12. Adjustable speed reduction device according to claim 11, characterized in that the clamp plate actuator (10) is mounted with a clamp plate link (8), the clamp plate actuator (10) being hinged to the clamp plate joint (6) by means of the clamp plate link (8).
13. Adjustable reduction gear according to claim 12, characterized in that the adjustment of the resistance increment is achieved by adjusting the overlap area of the grid sleeve (1) and the clamping plate (2) to change the resistance coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411883615.3A CN119659930A (en) | 2024-12-19 | 2024-12-19 | An adjustable deceleration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411883615.3A CN119659930A (en) | 2024-12-19 | 2024-12-19 | An adjustable deceleration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119659930A true CN119659930A (en) | 2025-03-21 |
Family
ID=94987180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411883615.3A Pending CN119659930A (en) | 2024-12-19 | 2024-12-19 | An adjustable deceleration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119659930A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208036589U (en) * | 2018-03-20 | 2018-11-02 | 滨州学院 | A kind of deceleration harden structure for aircraft |
| US20190283782A1 (en) * | 2018-03-17 | 2019-09-19 | Marvin Liu | High speed transportation with transporter enveloped by low pressure in running tube |
| CN112572769A (en) * | 2020-11-23 | 2021-03-30 | 贵州贵航飞机设计研究所 | Driving method of symmetrical speed reducing plate |
| CN115817796A (en) * | 2022-12-26 | 2023-03-21 | 中国航天空气动力技术研究院 | Aircraft speed reduction plate based on airfoil profile |
-
2024
- 2024-12-19 CN CN202411883615.3A patent/CN119659930A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190283782A1 (en) * | 2018-03-17 | 2019-09-19 | Marvin Liu | High speed transportation with transporter enveloped by low pressure in running tube |
| CN208036589U (en) * | 2018-03-20 | 2018-11-02 | 滨州学院 | A kind of deceleration harden structure for aircraft |
| CN112572769A (en) * | 2020-11-23 | 2021-03-30 | 贵州贵航飞机设计研究所 | Driving method of symmetrical speed reducing plate |
| CN115817796A (en) * | 2022-12-26 | 2023-03-21 | 中国航天空气动力技术研究院 | Aircraft speed reduction plate based on airfoil profile |
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