Small penetrator for planetary subsurface penetration detection

Abstract

The present invention discloses a small penetrator for planetary subsurface penetration detection and its working method. The penetrator structure includes: a penetration buffer module, a spring power module, an unlocking and positioning module, and a communication antenna spiral expansion module. When locked, the bottom protrusion of the antenna frame is located in the T-slot; when unlocked, the antenna frame is driven by the motor to rotate out of the T-slot, and under the action of the spring power module, the unlocking and positioning module is driven to rise along the inner wall of the penetrator. When it reaches the specified position, the positioning pin realizes positioning. The present invention relies on a lander or orbiter for precise delivery and performs in-situ detection of the planetary subsurface soil. It has the advantages of compact structure, light weight, low cost, high reliability, etc., and meets the task requirements of planetary subsurface soil penetration detection.

Description

Technical Field

[0001] The present invention relates to the field of kinetic energy penetration detection technology for deep space exploration missions, and in particular to a small penetrator for planetary subsurface penetration detection and a working method thereof. Background Art

[0002] As a means of celestial body exploration, high-speed impact penetration detection has the following main advantages compared with orbital detection and lander detection: low energy demand, relatively low cost, more effective penetration into the interior of celestial bodies, and the ability to achieve the purpose of forming a detection or communication network through multiple impacts in a single launch.

[0003] During the impact process, the penetrator is required to effectively penetrate the medium to a certain depth, while also ensuring that the payload and detection equipment it carries are not destroyed. Summary of the Invention

[0004] In order to solve the problems of the prior art, the present invention provides a small penetrator for planetary subsurface penetration detection and a working method thereof, which can not only effectively penetrate the medium while protecting the internal payload, but also complete the task of raising and deploying the communication antenna.

[0005] The present invention provides a small penetrator for planetary subsurface penetration detection, comprising a shell, a penetration buffer module, a spring power module, an unlocking and positioning module, and a communication antenna spiral expansion module.

[0006] The spring power module comprises a spring frame and a spring cover connected by a spring group, and the spring frame is fixedly connected to the middle part of the shell.

[0007] The penetration buffer module includes a warhead, an aluminum honeycomb, a load cabin, and a compression spring armor. The compression spring armor is installed between the load cabin and the spring frame. The load cabin is connected to the warhead through the aluminum honeycomb, and the warhead is fixedly connected to the bottom of the shell.

[0008] The unlocking and positioning module includes a motor seat, a bearing sleeve, a motor, a motor end cover, a bearing armor, a positioning pin, a compression spring Ding, a bearing end cover, a connecting shaft, and an antenna frame. The motor is fixed in the motor seat through the motor end cover, and the motor is connected to the connecting shaft. The outer edge of the connecting shaft is sleeved with a bearing armor, and the connecting shaft and the bearing armor are installed in the bearing sleeve; the motor seat and the bearing sleeve are surrounded by grooves, and positioning pins and compression spring Ding are installed in the grooves. A groove that cooperates with the positioning pin is provided in the middle of the inner wall of the outer shell, and a positioning hole A and a positioning hole B that cooperate with the positioning pin are provided above the inner wall of the outer shell; the connecting shaft is connected to the antenna frame, a protrusion B is provided at the bottom of the antenna frame, and a T-slot that cooperates with the protrusion B is provided on the inner wall of the outer shell.

[0009] The communication antenna spiral expansion module includes an antenna frame, an outer spiral tube, a communication antenna, a supporting short rod, a rising nut, and a bearing B, wherein the antenna frame, the outer spiral tube, and the rising nut are nested and connected in sequence from the inside to the outside, and a bearing B is installed between the outer spiral tube and the antenna frame. The communication antenna is installed on the antenna frame and connected to the rising nut through the supporting short rod. The top of the communication antenna is riveted to the antenna frame, and the supporting short rod is riveted to the rising nut.

[0010] As a further improvement, an annular groove and a locking groove are provided on the top of the shell, protrusion B on the bottom of the antenna frame cooperates with the annular groove, and protrusion A is provided on the bottom of the outer spiral tube, which cooperates with the locking groove.

[0011] As a further improvement, in the communication antenna spiral expansion module, the communication antennas and supporting short rods are symmetrically distributed in six groups to form an umbrella-like structure.

[0012] As a further improvement, in the spiral expansion module of the communication antenna, a protrusion is designed at the upper threaded end of the external threaded tube to limit the rise of the rising nut and thus limit the expansion angle of the communication antenna. The maximum angle between the communication antenna and the external threaded tube is 120°.

[0013] The present invention also provides an operating method for a small penetrator for planetary subsurface penetration detection, which employs the small penetrator for planetary subsurface penetration detection, including a locked state, an unlocked state, and a penetration state. In the locked state, a protrusion B at the bottom of the antenna mount is engaged in a T-slot, restricting radial movement of the communication antenna's spiral deployment module along the penetrator's housing, and the spring in the spring power module is compressed.

[0014] In the unlocked state, the motor drives the connecting shaft to transmit power to the antenna frame, and the antenna frame rotates in the annular groove and rotates out of the T-slot. At this time, the spring group in the spring power module releases energy, pushing the entire module upward. The antenna frame drives the communication antenna, the supporting short rod and the rising nut to rotate relative to the outer spiral tube. The rising nut then spirals up along the outer spiral tube, and the communication antenna is deployed. After the unlocked positioning module reaches the specified position, the positioning pin pops outward under the action of the compressed spring D and is locked in the positioning hole A and positioning hole B to achieve positioning.

[0015] When the penetrator is in penetration state, the inner shell of the payload compartment penetrator moves downward, compressing the aluminum honeycomb and remaining stationary under the action of the compression spring armor, thus achieving the purpose of buffering and shock absorption.

[0016] Further improvements are made. In the unlocked state, when the rising nut rises to a certain height, the communication antenna is unfolded to a certain angle. The protrusion at the end of the upper thread of the external threaded tube limits the rise of the rising nut and thus limits the unfolding angle of the communication antenna. Based on the angle between the communication antenna and the external threaded tube, the maximum unfolding angle of the communication antenna is 120°. The motor is reversed to reduce the unfolding angle of the communication antenna, thereby realizing the adjustment of the unfolding angle of the communication antenna.

[0017] The beneficial effects of the present invention are:

[0018] 1. It can not only effectively penetrate the medium while protecting the internal payload, but also complete the task of raising and deploying the communication antenna.

[0019] 2. It has the advantages of compact structure, light weight, low cost and high reliability, and is suitable for the detection of soil penetration in the subsurface of the planet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a structural diagram of the penetration buffer module and the spring power module;

[0023] Figure 3 A schematic cross-sectional view of the unlocking and positioning module;

[0024] Figure 4 It is a partial cross-sectional structural diagram of the spiral expansion module of the communication antenna;

[0025] Figure 5 for Figure 4 A schematic diagram of the structure of part A;

[0026] Figure 6 for Figure 4 A schematic diagram of the structure of part B in the middle;

[0027] Figure 7 This is a schematic diagram of a partial cross-sectional structure of the unlocking positioning module in the positioning position after being unlocked and raised;

[0028] Figure 8 This is a schematic diagram of a partial cross-sectional structure of the communication antenna spiral deployment module when it is unlocked;

[0029] Figure 9This is a schematic diagram of the cross-sectional structure of the penetrator after the communication antenna is deployed;

[0030] Figure 10 Schematic diagram of the cross-sectional structure of the penetrator shell;

[0031] The corresponding reference numerals in the accompanying drawings are:

[0032] Aluminum honeycomb 1, payload compartment 2, motor seat 3, bearing sleeve 4, external threaded tube 5, communication antenna 6, antenna mount 7, penetrator housing 8, warhead 9, aluminum honeycomb lower cover 10, aluminum honeycomb upper cover 11, compression spring A 12, compression spring B 13, compression spring C 14, spring cover 15, spring frame 16, connecting shaft 17, bearing end cover 18, bearing A 19, locating pin 20, compression spring D 21, motor end cover 22, motor 23, bearing B 24, rivet A 25, supporting short rod 26, rising nut 27, rivet B 28, protrusion A 51, connecting groove 71, protrusion B 72, locking groove 81, annular groove 82, positioning hole A 83, T-slot 84, positioning hole B 85, ​​groove 86, connecting hole A 87, connecting hole B 88, connecting hole C 91, connecting hole D 161. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] like Figure 1 As shown, the main components of the present invention are: warhead 9, aluminum honeycomb 1, payload cabin 2, motor base 3, bearing sleeve 4, external threaded tube 5, communication antenna 6, antenna frame 7, penetrator housing 8.

[0035] Cushioning and shock absorption of payload.

[0036] like Figure 1 and Figure 2 and Figure 10 As shown, the penetration buffer module consists of a warhead 9, an aluminum honeycomb 1, a payload compartment 2, compression spring A 12, an aluminum honeycomb upper cover 11, and an aluminum honeycomb lower cover 10. A connection hole 91 is provided in the warhead 9, and the outer shell 8 is screwed to connection holes B 88 and C 91 in the warhead 9. Compression spring A 12 is installed between the payload compartment 2 and the spring holder 16. During penetration, the payload compartment 2 moves downward within the penetrator housing, compressing the aluminum honeycomb 1. The compression spring A 12 then maintains the compartment stationary, achieving the desired cushioning and shock absorption effect.

[0037] Unlock, lift and position the unlocking and positioning module.

[0038] like Figure 2 and Figure 10 As shown, the spring power module is composed of a compression spring B 13, a compression spring C 14, a spring frame 16, and a spring cover 15. The spring frame 16 and the housing 8 are respectively provided with a connecting hole D 161 and a connecting hole A 87 for connecting the two.

[0039] like Figure 3 、 Figure 7 and Figure 8 As shown, the unlocking and positioning module consists of a motor base 3, a bearing sleeve 4, a motor 23, a motor end cap 22, a bearing armor 19, a locating pin 20, a compression spring 21, a bearing end cap 18, a connecting shaft 17, and an antenna mount 7. The motor 23 is mounted within the motor base 3 and secured by the motor end cap 22. The connecting shaft 17 is installed within the bearing sleeve 4 and engages with the inner ring of the bearing armor 19. Both the motor base 3 and the bearing sleeve 4 have grooves around their perimeters. The locating pin 20 and compression spring 21 are mounted within protrusions that mate with grooves 86 in the housing 8, ensuring smooth lifting of the entire module. The connecting slot 71 of the antenna mount 7 engages with the connecting shaft 17. When unlocked, the protrusion B 72 at the bottom of the antenna frame 7 is stuck in the T-slot 84. When the motor 23 is driven, the connecting shaft 17 transmits power to the antenna frame 7, and the antenna frame 7 is rotated out of the T-slot 84. At this time, the spring B 13 and spring C 14 in the spring power module release energy to push the entire module upward. After the unlocked positioning module reaches the specified position, the positioning pin 20 pops outward under the action of the compression spring D 21 and is stuck in the positioning hole 83 and the positioning hole 85 to achieve positioning.

[0040] Rotational deployment of the communication antenna.

[0041] like Figure 4 The spiral expansion module of the communication antenna shown in the figure consists of an antenna frame 7, an outer spiral tube 5, a communication antenna 6, a supporting short rod 26, a rising nut 27, and a bearing B 24. The antenna frame 7, the outer spiral tube 5, and the rising nut 27 are nested and connected in order from the inside out, and a bearing B 24 is installed between the outer spiral tube 5 and the antenna frame 7. The communication antenna 6 is mounted on the antenna frame 7 and connected to the rising nut 27 via the supporting short rod 26. Figure 5 As shown, the communication antenna 6 and the antenna frame 7 are connected by rivets 25. Figure 6 As shown, the supporting short rod 26 and the rising nut 27 are connected by rivets 28.

[0042] like Figure 6 and Figure 7As shown, when the antenna stand 7 reaches a specific position and is positioned under the action of the spring power module, the protrusion 72 at the bottom of the antenna stand 7 cooperates with the annular groove 82, and the protrusion 51 at the bottom of the outer spiral tube 5 cooperates with the locking groove 81. When the motor 23 is driven, the connecting shaft 17 transmits power to the antenna stand 7. At this time, the antenna stand 7 rotates in the annular groove 82, and the outer spiral tube 5 cannot rotate because its bottom is stuck in the locking groove 81. The antenna stand 7 drives the communication antenna 6, the supporting short rod 26 and the rising nut 27 to rotate relative to the outer spiral tube, and the rising nut 27 spirally rises along the outer spiral tube 5, and the communication antenna is unfolded. The unfolding structure of the communication antenna 6 is shown in FIG. Figure 9 shown.

[0043] Adjust the deployment angle of the communication antenna.

[0044] After the rising nut 27 rises to a certain height, the communication antenna 6 is unfolded to a certain angle. The upper threaded end of the external threaded tube 5 is designed with a protrusion to limit the rise of the rising nut 27 and thus limit the unfolding angle of the communication antenna 6. The angle between the communication antenna 6 and the external threaded tube 5 is used as the basis. The maximum unfolding angle of the communication antenna 6 is 120°. The motor is reversed to reduce the unfolding angle of the communication antenna 6, thereby realizing the adjustment of the unfolding angle of the communication antenna 6.

[0045] In summary, the present invention provides a small penetrator capable of achieving payload cushioning and shock absorption, as well as communication antenna elevation, deployment, and angle adjustment. This device can be deployed at multiple locations via a lander or orbiter. It boasts a compact structure, low weight, low cost, and high reliability, making it suitable for detecting penetration into the subsurface soil of planets.

[0046] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, the above is only a preferred embodiment of the present invention. Since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited to this. Any technical personnel familiar with this technical field is within the technical scope disclosed by the present invention. For ordinary technical personnel in this technical field, changes or replacements that can be easily thought of should be covered within the protection scope of the present invention without departing from the principle of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A small penetrator for planetary subsurface penetration detection, characterized by: It includes a shell, a penetration buffer module, a spring power module, an unlocking and positioning module, and a communication antenna spiral expansion module; The spring power module includes a spring frame and a spring cover connected by a spring group, and the spring frame is fixedly connected to the middle part of the housing; The penetration buffer module includes a warhead, an aluminum honeycomb, a load compartment, and a compression spring armor. The compression spring armor is installed between the load compartment and the spring frame. The load compartment is connected to the warhead through the aluminum honeycomb, and the warhead is fixedly connected to the bottom of the shell. The unlocking and positioning module includes a motor seat, a bearing sleeve, a motor, a motor end cover, a bearing A, a positioning pin, a compression spring D, a bearing end cover, a connecting shaft, and an antenna frame. The motor is fixed in the motor seat through the motor end cover, and the motor is connected to the connecting shaft. The outer edge of the connecting shaft is sleeved with the bearing A, and the connecting shaft and the bearing A are installed in the bearing sleeve; the motor seat and the bearing sleeve are all surrounded by grooves, and the positioning pin and the compression spring D are installed in the grooves. A groove that cooperates with the positioning pin is provided in the middle of the inner wall of the shell, and a positioning hole A and a positioning hole B that cooperate with the positioning pin are provided above the inner wall of the shell; the connecting shaft is connected to the antenna frame, a protrusion B is provided at the bottom of the antenna frame, and a T-slot that cooperates with the protrusion B is provided on the inner wall of the shell; The communication antenna spiral expansion module includes an antenna frame, an outer spiral tube, a communication antenna, a supporting short rod, a rising nut, and a bearing B, wherein the antenna frame, the outer spiral tube, and the rising nut are nested and connected in sequence from the inside to the outside, and a bearing B is installed between the outer spiral tube and the antenna frame. The communication antenna is installed on the antenna frame and connected to the rising nut through the supporting short rod. The top of the communication antenna is riveted to the antenna frame, and the supporting short rod is riveted to the rising nut. In the communication antenna spiral expansion module, a protrusion is designed at the upper thread end of the external threaded tube to limit the rise of the rising nut and thus limit the expansion angle of the communication antenna. The maximum angle between the communication antenna and the external threaded tube is 120°.

2. The small penetrator for planetary subsurface penetration detection according to claim 1, characterized in that: The top of the shell is provided with an annular groove and a locking groove, the protrusion B at the bottom of the antenna frame matches the annular groove, and the bottom of the outer spiral tube is provided with a protrusion A, which matches the locking groove.

3. The small penetrator for planetary subsurface penetration detection according to claim 1, characterized in that: In the communication antenna spiral expansion module, the communication antennas and the supporting short rods are symmetrically distributed in six groups to form an umbrella-like structure.

4. A method for operating a small penetrator for planetary subsurface penetration detection, using the small penetrator for planetary subsurface penetration detection according to claim 1, characterized in that: Including locked state, unlocked state and penetration state of penetrator; In the locked state, the protrusion B at the bottom of the antenna frame is stuck in the T-slot, limiting the radial movement of the communication antenna spiral deployment module along the penetrator housing, and the spring in the spring power module is in a compressed state; In the unlocked state, the motor drives the connecting shaft to transmit power to the antenna frame, and the antenna frame rotates in the annular groove and rotates out of the T-slot. At this time, the spring group in the spring power module releases energy, pushing the entire module upward. The antenna frame drives the communication antenna, the supporting short rod and the rising nut to rotate relative to the outer spiral tube. The rising nut then spirals up along the outer spiral tube, and the communication antenna is deployed. After the unlocked positioning module reaches the specified position, the positioning pin pops outward under the action of the compressed spring D and is locked in the positioning hole A and positioning hole B to achieve positioning. When the penetrator is in penetration state, the inner shell of the payload compartment penetrator moves downward, compressing the aluminum honeycomb and remaining stationary under the action of the compression spring armor, thus achieving the purpose of buffering and shock absorption.

5. The operating method of the small penetrator for planetary subsurface penetration detection according to claim 4 is characterized in that: In the unlocked state, when the rising nut rises to a certain height, the communication antenna unfolds to a certain angle. The protrusion at the end of the upper thread of the external threaded tube limits the rise of the rising nut and thus limits the unfolding angle of the communication antenna. Based on the angle between the communication antenna and the external threaded tube, the maximum unfolding angle of the communication antenna is 120°. The motor reverses to reduce the unfolding angle of the communication antenna, thereby adjusting the unfolding angle of the communication antenna.

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