Cross-medium multi-mode rocket engine

Abstract

The invention relates to the technical field of aviation machinery, in particular to a cross-medium multi-mode rocket engine which comprises a supporting device, a power device is fixedly installed in the center of the top end of the supporting device, a circulating component is fixedly installed in the supporting device, and the power device comprises an extension frame and a cross-medium rocket engine body. The extending frame is fixedly installed at the bottom end of an outer ring of the cross-medium rocket engine, the supporting device comprises a supporting frame, fan blades, a worm, a heat exchanger, a nozzle, a guide base frame, a rack and a top frame, the supporting frame and the guide base frame are fixedly installed on the two sides of the nozzle, the supporting frame is located above the guide base frame, and the fan blades are rotatably installed at the bottom end of the interior of the supporting frame; the worm is fixedly installed in the center of the bottom end of the fan blade, and the racks are symmetrically and fixedly installed on the two sides, close to the guide base frame, of the nozzle. Through the arrangement of the supporting device and the circulating component, the purposes of cleaning the inner wall of the nozzle and detecting the temperature at a fixed point when the cross-medium multi-mode rocket engine is used are achieved.

Description

Technical Field

[0001] The present invention relates to the field of aviation machinery technology, in particular to a cross-medium multi-mode rocket engine. Background Art

[0002] A rocket engine is a jet engine that uses the aircraft's own propellant (fuel and oxidizer). It does not rely on outside air and can operate in space outside the dense atmosphere. The rocket engine uses the impulse principle (or Newton's third law) to convert the high-temperature and high-pressure gas generated by the combustion of the propellant in the combustion chamber into kinetic energy, forming a high-speed jet that is discharged to generate thrust.

[0003] The cross-medium rocket engine has the ability to operate stably in different medium environments, thanks to its unique design and adaptability. It usually needs to switch working states in multiple media, so it must have good medium adaptability and stability. In addition, the cross-medium rocket engine also has higher thrust and efficiency to meet the propulsion needs in different media.

[0004] At present, when a cross-medium multi-mode rocket engine is in operation, the residues of the burned fuel will adhere to the inner wall of the nozzle, which will affect the efficiency of heat exchange, thereby causing the efficiency of the heat exchanger to decrease. As a result, the existing cross-medium multi-mode rocket engine is unable to clean the inner wall of the nozzle and detect the temperature at a fixed point when in use. Therefore, a device is needed to improve the above problem. Summary of the invention

[0005] In response to the problems in the prior art, the present invention provides a cross-medium multi-mode rocket engine.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a cross-medium multi-mode rocket engine, including a supporting device, a power device is fixedly installed at the top center of the supporting device, a circulating component is fixedly installed inside the supporting device, the power device includes an extension frame and a cross-medium rocket engine, the extension frame is fixedly installed at the bottom end of the outer ring of the cross-medium rocket engine, the supporting device includes a supporting frame, fan blades, a worm, a heat exchanger, a nozzle, a guide base, a rack and a top frame, the supporting frame and the guide base are fixedly installed on both sides of the nozzle, and the supporting frame is located above the guide base, the fan blades are rotatably installed at the inner bottom end of the supporting frame, the worm is fixedly installed at the bottom end center of the fan blade, the rack is symmetrically fixedly installed on both sides of the nozzle near the guide base, and the top frame is fixedly installed on the top of the nozzle.

[0007] Specifically, the circulation component includes a transmission device and a contact device, and the contact device is fixedly installed between the two transmission devices.

[0008] Specifically, the transmission device includes a first transmission gear, an extension side frame, a wire wheel, a winding wheel, a worm wheel, a second transmission gear and a supporting shaft, the supporting shaft is rotatably installed between the two extension side frames, the worm wheel is fixedly installed at the center of the outer ring of the supporting shaft, the second transmission gear is fixedly installed at both ends of the outer ring of the supporting shaft, the winding wheel is rotatably installed between the two extension side frames, and the winding wheel is located at the side end of the worm wheel, the first transmission gear is fixedly installed at the center of both sides of the winding wheel, the wire wheel is rotatably installed between the two extension side frames, and the wire wheel is located at the side end of the winding wheel away from the worm wheel.

[0009] Specifically, the contact device includes a steel wire, an extension guide tube, a contact displacement ring, a limit base frame, a support vertical frame, a third transmission gear, a central base plate, an extension rod, an L-shaped support base frame, a first temperature sensor and a second temperature sensor. The extension guide tube is fixedly installed on the inner ring of the contact displacement ring, the limit base frame is fixedly installed on both sides of the extension guide tube, the steel wire is fixedly installed on the top of the limit base frame away from the contact displacement ring, the support vertical frame is symmetrically fixedly installed on both sides of the top of the contact displacement ring, the central base plate is fixedly installed on the top of the support vertical frame, the extension rod is rotatably installed on the inner two ends of the central base plate close to the contact displacement ring, the third transmission gear is fixedly installed on the outer center of the extension rod, the L-shaped support base frame is fixedly installed on one end of the extension rod away from the third transmission gear, the first temperature sensor is fixedly installed on the bottom end of the L-shaped support base frame, and the second temperature sensor is fixedly installed on one end of the L-shaped support base frame away from the contact displacement ring.

[0010] Specifically, the cross-medium rocket engine is fixedly mounted on the inner top of the nozzle, the extended side frames are symmetrically fixedly mounted on the tops of both sides of the nozzle close to the supporting frame, and the worm wheel is meshed with the worm.

[0011] Specifically, the top end of the steel wire is connected to the winding wheel, the outer ring of the contact displacement ring is in contact with the inner wall of the nozzle, the third transmission gear is vertically aligned with the side end of the rack away from the guide base, and the second transmission gear is meshed with the first transmission gear.

[0012] Specifically, the extension frame is vertically aligned with the first temperature sensor and the second temperature sensor, vertical slide grooves are provided on the inside of the guide base frame and on both sides of the inside of the nozzle near the rack, the tooth distribution angle of the second transmission gear is 180°, and grooves are provided on the top of both sides of the contact displacement circle near the center substrate.

[0013] Specifically, the side end of the second temperature sensor close to the central substrate is fitted with the inner wall of the nozzle, the worm gear and the winding wheel are spaced 10 cm apart, a ventilation groove is provided at the bottom end of the support frame, circular holes are provided at the top frame and the top of the nozzle, and the cross-medium rocket engine is vertically aligned with the contact displacement circle and the extended guide tube.

[0014] Specifically, the support frame also includes a covering plate, a driving motor and a connecting back frame. The driving motor is symmetrically fixedly installed on the top of the side end of the support frame, the connecting back frame is fixedly installed between the two driving motors, and the covering plate is fixedly installed on the outer ring of the connecting back frame.

[0015] Specifically, the diameter of the cover plate is equal to the inner circle diameter of the support frame, and a reinforcing connecting rod is installed between the cover plate and the connecting back frame.

[0016] Beneficial effects of the present invention:

[0017] First, when the nozzle of the present invention is in flight, the airflow can drive the fan blades and the worm to rotate, so that the second transmission gear can drive the first transmission gear and the winding wheel to rotate, so that the steel wire can pull the contact displacement circle to move upward. At this time, the contact displacement circle can scrape off the residual scale attached to the inner wall of the nozzle. At the same time, the airflow can spray out the residual scale, and when the second transmission gear is out of contact with the first transmission gear, the steel wire can be released, and the extended guide tube can be moved downward to reset, so that the contact displacement circle can clean the inner wall surface of the nozzle again, thereby completing the cleaning of the inner wall of the nozzle.

[0018] Second, when the contact displacement ring of the present invention maintains a normal state, it can drive the second temperature sensor to fit against the inner wall of the nozzle, so that the second temperature sensor can detect the inner wall surface of the nozzle. At the same time, when the contact displacement ring moves upward, it can drive the third transmission gear to move on the surface of the rack, so that the third transmission gear can drive the L-shaped support base to rotate upward, so that the first temperature sensor can contact the bottom end of the extension frame, and the temperature inside the cross-medium rocket engine can be transmitted to the extension frame, so that the first temperature sensor can detect the temperature of the cross-medium rocket engine when it is working, thereby completing the work of nozzle and nozzle fixed-point temperature detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the main body of the present invention from the front perspective;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the power device of the present invention from the front perspective;

[0022] Figure 3It is a partial cutaway schematic diagram of the supporting device in the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the circulation component in the present invention from the front perspective;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the transmission device of the present invention from the front perspective;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the contact device in the present invention from a front perspective;

[0026] Figure 7 For the present invention Figure 6 A local enlarged schematic diagram of point A;

[0027] Figure 8 It is a schematic diagram of the three-dimensional structure from the front perspective of the second embodiment of the support frame of the present invention.

[0028] In the figure: 1-power device, 2-support device, 3-circulation component, 4-extension frame, 5-cross-medium rocket engine, 6-support frame, 7-fan blades, 8-worm, 9-heat exchanger, 10-nozzle, 11-guide base frame, 12-rack, 13-top frame, 14-transmission device, 15-contact device, 16-first transmission gear, 17-extension side frame, 18-guide wheel, 19-winding wheel, 20-worm wheel, 21-second transmission gear, 22-support shaft rod, 23-steel wire, 24-extension guide tube, 25-contact displacement ring, 26-limit base frame, 27-support vertical frame, 28-third transmission gear, 29-center base plate, 30-extension rod, 31-L-type support base frame, 32-first temperature sensor, 33-second temperature sensor, 34-covering plate, 35-drive motor, 36-connecting back frame. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0030] The present invention is further described below in conjunction with the accompanying drawings.

[0031] Example 1

[0032] like Figure 1 , Figure 2 ,and Figure 3As shown, the cross-medium multi-modal rocket engine of the present invention includes a support device 2, a power device 1 is fixedly installed at the top center of the support device 2, a circulation component 3 is fixedly installed inside the support device 2, the power device 1 includes an extension frame 4 and a cross-medium rocket engine 5, the extension frame 4 is fixedly installed at the bottom end of the outer ring of the cross-medium rocket engine 5, the support device 2 includes a support frame 6, blades 7, a worm 8, a heat exchanger 9, a nozzle 10, a guide base frame 11, a rack 12 and a top frame 13, the support frame 6 and the guide base frame 11 are fixedly installed on both sides of the nozzle 10, and the support frame 6 is located above the guide base frame 11, the blades 7 are rotatably installed at the inner bottom end of the support frame 6, the worm 8 is fixedly installed at the bottom end center of the blades 7, the rack 12 is symmetrically fixedly installed on both sides of the nozzle 10 close to the guide base frame 11, and the top frame 13 is fixedly installed at the top of the nozzle 10.

[0033] like Figure 4 The circulation component 3 includes a transmission device 14 and a contact device 15. The contact device 15 is fixedly installed between the two transmission devices 14 and can support the contact device 15 to work.

[0034] like Figure 5 The transmission device 14 includes a first transmission gear 16, an extended side frame 17, a wire wheel 18, a winding wheel 19, a worm wheel 20, a second transmission gear 21 and a support shaft 22. The support shaft 22 is rotatably installed between the two extended side frames 17. The worm wheel 20 is fixedly installed at the center of the outer circle of the support shaft 22. The second transmission gear 21 is fixedly installed at both ends of the outer circle of the support shaft 22. The winding wheel 19 is rotatably installed between the two extended side frames 17, and the winding wheel 19 is located at the side end of the worm wheel 20. The first transmission gear 16 is fixedly installed at the center of both sides of the winding wheel 19. The wire wheel 18 is rotatably installed between the two extended side frames 17, and the wire wheel 18 is located at the side end of the winding wheel 19 away from the worm wheel 20. When the worm 8 rotates, it can drive the worm wheel 20 and the second transmission gear 21 to rotate synchronously.

[0035] like Figure 6 and Figure 7The contact device 15 includes a steel wire 23, an extension guide tube 24, a contact displacement ring 25, a limit base frame 26, a support vertical frame 27, a third transmission gear 28, a central base plate 29, an extension rod 30, an L-shaped support base frame 31, a first temperature sensor 32 and a second temperature sensor 33. The extension guide tube 24 is fixedly mounted on the inner ring of the contact displacement ring 25, the limit base frame 26 is fixedly mounted on both sides of the extension guide tube 24, the steel wire 23 is fixedly mounted on the top of the limit base frame 26 away from the contact displacement ring 25, the support vertical frame 27 is symmetrically fixedly mounted on both sides of the top of the contact displacement ring 25, and the central base plate 29 is fixedly mounted on the support At the top of the vertical frame 27, the extension rod 30 is rotatably mounted on the inner ends of the central base plate 29 close to the contact displacement circle 25, the third transmission gear 28 is fixedly mounted on the outer center of the extension rod 30, the L-shaped support base 31 is fixedly mounted on the end of the extension rod 30 away from the third transmission gear 28, the first temperature sensor 32 is fixedly mounted on the bottom end of the L-shaped support base 31, and the second temperature sensor 33 is fixedly mounted on the end of the L-shaped support base 31 away from the contact displacement circle 25. The L-shaped support base 31 is arranged in an L shape, so that the third transmission gear 28 drives the first temperature sensor 32 to move vertically downward when it is not affected by the meshing force.

[0036] The cross-medium rocket engine 5 is fixedly mounted on the inner top of the nozzle 10, the extended side frame 17 is symmetrically fixedly mounted on the top of both sides of the nozzle 10 near the support frame 6, the worm wheel 20 is meshed with the worm 8, the top of the steel wire 23 is connected to the winding wheel 19, the outer ring of the contact displacement ring 25 is in contact with the inner wall of the nozzle 10, the third transmission gear 28 is vertically aligned with the side end of the rack 12 away from the guide base frame 11, the second transmission gear 21 is meshed with the first transmission gear 16, the extension frame 4 is vertically aligned with the first temperature sensor 32 and the second temperature sensor 33, the inner Vertical sliding grooves are provided on both sides of the inner part of the nozzle 10 near the rack 12, the tooth distribution angle of the second transmission gear 21 is 180°, grooves are provided on the top of both sides of the contact displacement circle 25 near the center substrate 29, the side end of the second temperature sensor 33 near the center substrate 29 is in contact with the inner wall of the nozzle 10, the worm gear 20 and the winding wheel 19 are spaced 10 cm apart, a ventilation groove is provided at the bottom end of the support frame 6, and round holes are provided at the top frame 13 and the top of the nozzle 10. The cross-medium rocket engine 5 is vertically aligned with the contact displacement circle 25 and the extended guide tube 24.

[0037] The working principle of embodiment 1 is as follows: when in use, first establish a connection between the cross-medium rocket engine 5 and the module in the rocket. When the rocket is started, the fuel can generate thrust at the bottom end of the cross-medium rocket engine 5 when burning to drive the rocket to rise and fly. At the same time, when the nozzle 10 is flying, the airflow can contact the fan blades 7, thereby driving the fan blades 7 and the worm 8 to rotate. The worm 8 is meshed with the worm wheel 20, so that when the worm 8 rotates, the worm wheel 20 and the second transmission gear 21 can be driven to rotate synchronously. When the second transmission gear 21 rotates to mesh with the first transmission gear 16, it can drive the first transmission gear 16 and the winding wheel 19 to rotate. When the winding wheel 19 rotates, the steel wire 23 can be pulled to move upward. At this time, the steel wire 23 can pull the contact displacement circle 2 5 moves upward, and the wire wheel 18 is set to support the steel wire 23 to pull the contact displacement ring 25 upward in a straight line. At the same time, when the contact displacement ring 25 is displaced, it can move along the inner wall surface of the nozzle 10. The contact displacement ring 25 fits the inner wall surface of the nozzle 10, so that when the contact displacement ring 25 is displaced, the residue attached to the inner wall surface of the nozzle 10 can be removed. In addition, when the nozzle 10 is in normal use, the high temperature generated by the combustion of the fuel can be conducted to the nozzle 10. At the same time, the heat exchanger 9 fits the outer surface of the nozzle 10, so that the heat on the surface of the nozzle 10 can be conducted to the inside of the heat exchanger 9. Through the setting of the heat exchanger 9, the heat can be stored for subsequent use. At the same time, the L-shaped support base 31 is maintained In normal state, the second temperature sensor 33 can be attached to the inner wall surface of the nozzle 10, and the first temperature sensor 32 and the first temperature sensor 32 are in a long-term open state, so that when the second temperature sensor 33 is attached to the nozzle 10, the temperature of the inner wall surface of the nozzle 10 can be detected in real time, and when the contact displacement ring 25 moves upward, it can drive the third transmission gear 28 to move along the surface of the rack 12, so that the third transmission gear 28 can drive the extension rod 30 and the L-shaped support base 31 to rotate at the same time, and when the contact displacement ring 25 moves upward to the position, it can drive the third transmission gear 28 to move along the surface of the rack 12 to the top, and when the third transmission gear 28 moves along the surface of the rack 12 to the limit position, the L-shaped support base 31 can drive the first The temperature sensor 32 rotates to be vertically upward, so that the first temperature sensor 32 can fit with the bottom end of the extension frame 4. When the cross-medium rocket engine 5 is working, the temperature can be transferred to the extension frame 4, so that when the first temperature sensor 32 contacts the extension frame 4, the temperature of the cross-medium rocket engine 5 when working can be detected, and the real-time temperature detection of the cross-medium rocket engine 5 and the nozzle 10 can be completed. At the same time, when the contact displacement circle 25 is displaced, it is displaced along the vertical slide groove inside the nozzle 10 and the guide base frame 11 through the limiting base frame 26, so that the contact displacement circle 25 can be displaced up and down along a straight line. Subsequently, when the second transmission gear 21 rotates 180°, the teeth of the second transmission gear 21 can lose meshing with the first transmission gear 16. At this time,The first transmission gear 16 will lose its meshing force, and the contact displacement circle 25 will slide downward under the influence of gravity until the contact displacement circle 25 moves downward and resets. Moreover, when the contact displacement circle 25 moves downward, the steel wire 23 can be pulled to drive the winding wheel 19 and the first transmission gear 16 to rotate and reset, so that the first transmission gear 16 can mesh and contact with the second transmission gear 21 again. Moreover, when the contact displacement circle 25 resets downward, the third transmission gear 28 can move downward along the surface of the rack 12, causing the third transmission gear 28 to rotate and reset. , until the contact displacement circle 25 moves downward to the limit position, the second temperature sensor 33 can fit with the inner wall surface of the nozzle 10 again, and the inner wall surface of the nozzle 10 can be detected in real time. When the device is in use, when the nozzle 10 is driven to fly by the rocket, the airflow can drive the fan blades 7 and the worm 8 to rotate, so that the worm gear 20 can drive the second transmission gear 21 to intermittently engage with the first transmission gear 16, so that the winding wheel 19 can pull the contact displacement circle 25 upward through the steel wire 23, so that the contact displacement circle 25 can scrape off the residual scale accumulated on the inner wall of the nozzle 10. At the same time, when the contact displacement circle 25 moves upward, it can drive the third transmission gear 28 to move along the surface of the rack 12, so that the third transmission gear 28 can drive the first temperature sensor 32 to rotate vertically upward, so that the first temperature sensor 32 can contact the extension frame 4, and the first temperature sensor 32 can detect the temperature of the cross-medium rocket engine 5 when it is working. Moreover, when the second transmission gear 21 rotates past the first transmission gear 16, the first transmission gear 16 will lose the meshing force. At this time, the winding wheel 19 is rotated. The wheel 19 will release the steel wire 23, and the contact displacement ring 25 will move downward, causing the third transmission gear 28 to move downward synchronously. At the same time, when the contact displacement ring 25 moves downward to reset, the contact displacement ring 25 can be pulled by the steel wire 23 to prevent the contact displacement ring 25 from falling off. In addition, when the third transmission gear 28 passes the rack 12, the L-shaped support base 31 will rotate vertically downward, so that the second temperature sensor 33 can fit the inner wall of the nozzle 10 again, which is convenient for detecting the inner wall temperature of the nozzle 10 and completing the work.

[0038] Example 2

[0039] On the basis of Example 1, Figure 8 As shown, the support frame 6 also includes a covering plate 34, a driving motor 35 and a connecting back frame 36. The driving motor 35 is symmetrically fixedly installed on the top of the side end of the support frame 6. The connecting back frame 36 is fixedly installed between the two driving motors 35. The covering plate 34 is fixedly installed on the outer ring of the connecting back frame 36. The diameter of the covering plate 34 is equal to the inner ring diameter of the support frame 6. A reinforcing connecting rod is installed between the covering plate 34 and the connecting back frame 36.

[0040] When implementing this embodiment, when the fan blades 7 are not needed, the drive motor 35 can be started to drive the connecting back frame 36 to rotate. When the connecting back frame 36 rotates, the cover plate 34 can be driven to rotate until the cover plate 34 is in contact with the top of the support frame 6, thereby preventing foreign objects from falling and contacting the fan blades 7. Subsequently, when the nozzle 10 is working, the drive motor 35 can be started to drive the connecting back frame 36 to rotate again until the cover plate 34 is out of contact with the support frame 6, so that the external airflow can enter the interior of the support frame 6 to drive the fan blades 7 to rotate, thereby completing the work of protecting the interior of the support frame 6.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cross-medium multi-mode rocket engine, comprising a support device (2), a power device (1) being fixedly mounted at the top center of the support device (2), and a circulation component (3) being fixedly mounted inside the support device (2), characterized in that: The power device (1) includes an extension frame (4) and a cross-medium rocket engine (5), wherein the extension frame (4) is fixedly mounted on the bottom end of the outer ring of the cross-medium rocket engine (5), and the support device (2) includes a support frame (6), a fan blade (7), a worm (8), a heat exchanger (9), a nozzle (10), a guide base frame (11), a rack (12) and a top frame (13), wherein the support frame (6) and the guide base frame (11) are fixedly mounted on both sides of the nozzle (10), and the support frame (6) is located above the guide base frame (11), the fan blade (7) is rotatably mounted on the inner bottom end of the support frame (6), the worm (8) is fixedly mounted at the bottom end center of the fan blade (7), the rack (12) is symmetrically fixedly mounted on both sides of the nozzle (10) near the inner side of the guide base frame (11), and the top frame (13) is fixedly mounted on the top end of the nozzle (10).

2. The cross-medium multi-mode rocket engine according to claim 1, characterized in that: The circulation component (3) comprises a transmission device (14) and a contact device (15), wherein the contact device (15) is fixedly installed between the two transmission devices (14).

3. The cross-medium multi-mode rocket engine according to claim 2, characterized in that: The transmission device (14) comprises a first transmission gear (16), an extension side frame (17), a guide wheel (18), a winding wheel (19), a worm wheel (20), a second transmission gear (21) and a support shaft (22); the support shaft (22) is rotatably mounted between the two extension side frames (17); the worm wheel (20) is fixedly mounted at the center of the outer ring of the support shaft (22); the second transmission gear (21) is fixedly mounted at both ends of the outer ring of the support shaft (22); the winding wheel (19) is rotatably mounted between the two extension side frames (17), and the winding wheel (19) is located at the side ends of the worm wheel (20); the first transmission gear (16) is fixedly mounted at the centers of both sides of the winding wheel (19); the guide wheel (18) is rotatably mounted between the two extension side frames (17), and the guide wheel (18) is located at the side ends of the winding wheel (19) away from the worm wheel (20).

4. The cross-medium multi-mode rocket engine according to claim 3, characterized in that: The contact device (15) comprises a steel wire (23), an extended guide tube (24), a contact displacement ring (25), a limit base frame (26), a support vertical frame (27), a third transmission gear (28), a central base plate (29), an extension rod (30), an L-shaped support base frame (31), a first temperature sensor (32) and a second temperature sensor (33); the extended guide tube (24) is fixedly mounted on the inner ring of the contact displacement ring (25); the limit base frame (26) is fixedly mounted on both sides of the extended guide tube (24); the steel wire (23) is fixedly mounted on the top of the limit base frame (26) away from the contact displacement ring (25); and the support vertical frame (27) is symmetrically fixed. The central substrate (29) is fixedly mounted on the top of the contact displacement circle (25); the extension rod (30) is rotatably mounted on the inner ends of the central substrate (29) close to the contact displacement circle (25); the third transmission gear (28) is fixedly mounted on the outer center of the extension rod (30); the L-shaped support base (31) is fixedly mounted on one end of the extension rod (30) away from the third transmission gear (28); the first temperature sensor (32) is fixedly mounted on the bottom end of the L-shaped support base (31); and the second temperature sensor (33) is fixedly mounted on one end of the L-shaped support base (31) away from the contact displacement circle (25).

5. The cross-medium multi-mode rocket engine according to claim 4, characterized in that: The cross-medium rocket engine (5) is fixedly mounted on the inner top of the nozzle (10), the extended side frame (17) is symmetrically fixedly mounted on the top of both sides of the nozzle (10) close to the supporting frame (6), and the worm wheel (20) is meshed with the worm (8).

6. The cross-medium multi-mode rocket engine according to claim 5, characterized in that: The top end of the steel wire (23) is connected to the winding wheel (19), the outer ring of the contact displacement ring (25) is in contact with the inner wall of the nozzle (10), the third transmission gear (28) is vertically aligned with the side end of the rack (12) away from the guide base frame (11), and the second transmission gear (21) is meshed with the first transmission gear (16).

7. The cross-medium multi-mode rocket engine according to claim 6, characterized in that: The extension frame (4) is vertically aligned with the first temperature sensor (32) and the second temperature sensor (33); vertical slide grooves are provided inside the guide frame (11) and on both sides of the nozzle (10) near the rack (12); the tooth distribution angle of the second transmission gear (21) is 180°; and grooves are provided on the tops of both sides of the contact displacement ring (25) near the center base plate (29).

8. The cross-medium multi-mode rocket engine according to claim 7, characterized in that: The side end of the second temperature sensor (33) close to the central substrate (29) is in contact with the inner wall of the nozzle (10), the worm gear (20) and the winding wheel (19) are spaced 10 cm apart, a ventilation slot is provided at the bottom end of the support frame (6), circular holes are provided at the top ends of the top frame (13) and the nozzle (10), and the cross-medium rocket engine (5) is vertically aligned with the contact displacement ring (25) and the extended guide tube (24).

9. The cross-medium multi-mode rocket engine according to claim 8, characterized in that: The support frame (6) further comprises a covering plate (34), a driving motor (35) and a connecting back frame (36); the driving motor (35) is symmetrically fixedly mounted on the top of the side end of the support frame (6); the connecting back frame (36) is fixedly mounted between the two driving motors (35); and the covering plate (34) is fixedly mounted on the outer ring of the connecting back frame (36).

10. The cross-medium multi-mode rocket engine according to claim 9, characterized in that: The diameter of the covering plate (34) is equal to the inner diameter of the supporting frame (6), and a reinforcing connecting rod is installed between the covering plate (34) and the connecting back frame (36).

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