Compact antenna plate unfolding and folding mechanism for reconnaissance aircraft

Abstract

The invention discloses a compact antenna plate unfolding and folding mechanism for a reconnaissance aircraft, and belongs to the field of structure and mechanism design of deformable aircrafts, and the compact antenna plate unfolding and folding mechanism comprises a fixed antenna plate, a movable antenna plate, a telescopic rod mechanism and a driving mechanism, the immovable antenna plate comprises a first immovable antenna plate and a second immovable antenna plate; the moving antenna plates comprise a first moving antenna plate and a second moving antenna plate; the fixed antenna plate is located on the lower portion, a telescopic rod mechanism is installed in the fixed antenna plate, the movable antenna plate is located above the fixed antenna plate, the movable antenna plate is connected with the fixed antenna plate through the telescopic rod mechanism, and the movable antenna plate is driven by the telescopic rod mechanism to move in the lateral direction and the normal direction of the antenna plate. According to the antenna plate unfolding and folding mechanism, it is ensured that the lower surface of the movable antenna plate is flush with the lower surface of the fixed antenna plate after unfolding, the structure is compact, compactness is kept in the working process, the appearance of the antenna plates is not changed, and the antenna plate unfolding and folding mechanism can be unfolded and folded in the atmosphere.

Description

Technical Field

[0001] The invention belongs to the field of structure and mechanism design of deformable aircraft, and relates to an unfolding and folding mechanism of a radar antenna plate of a reconnaissance / strike aircraft, which belongs to a reusable unfolding / folding mechanism. Background Art

[0002] A reconnaissance missile is a missile system used to obtain information about enemy targets. Compared with satellites, reconnaissance missiles have the advantages of rapid deployment, flexible operation, and close-range reconnaissance. Reconnaissance missiles collect information about enemy targets during flight by carrying optical, infrared, radar and other sensors. In order to improve the detection effect, reconnaissance missiles usually need to be equipped with larger antenna panels. In order to save space, the reconnaissance missile is required to be able to fold up a part of the antenna panels during storage, and then unfold the antenna panels when it flies to the reconnaissance position after launch. After completing the reconnaissance mission, the aircraft enters the atmosphere and uses the antenna panels to provide lift for gliding flight. After a certain distance from the target, the antenna panels need to be folded again to improve the aircraft's lateral maneuverability.

[0003] If a traditional telescopic mechanism (such as telescopic wings) is used, it is difficult for the lower surface of the movable antenna plate and the immovable antenna plate to be flush after the antenna plate is unfolded, which does not meet the working requirements of the detection sensor. Taking the radar sensor as an example, the uneven surface of the detection sensor may cause the propagation path of the radar wave to change, resulting in time delay or phase difference of the reflected signal, thereby affecting the detection accuracy. Although some other deployment / folding methods (such as the revolving door type) can ensure that the working surface of the antenna plate is flush after deployment, the movement stroke of the folding and unfolding process is large, the structure is not compact enough, and the drive mechanism usually needs to be installed on the outside of the antenna plate, which will significantly change the appearance of the aircraft, making it difficult to work in the atmosphere, and does not meet the requirements of the reconnaissance missile's flight phase in the atmosphere. Summary of the invention

[0004] The present invention designs a rotatable telescopic rod mechanism, and based on this, designs a compact antenna plate expansion / folding mechanism. The mechanism can ensure that the moving part of the antenna plate is flush with the lower surface of the non-movable part after the antenna plate is expanded, and the structure is compact and can work in the atmosphere, meeting the requirements of reconnaissance missiles.

[0005] Aiming at the requirements of the deployment and folding functions of the antenna plate of the reconnaissance missile, the present invention designs a compact antenna plate deployment and folding mechanism based on a rotatable telescopic rod, which ensures that the movable antenna plate is flush with the lower surface of the immovable antenna plate after deployment, and does not change the appearance of the antenna plate, and can be deployed and folded in the atmosphere.

[0006] The present invention is achieved in that:

[0007] A compact reconnaissance aircraft antenna panel deployment and folding mechanism, characterized in that the mechanism includes: a non-movable antenna panel, a movable antenna panel, a telescopic rod mechanism, and some connection and driving mechanisms; the non-movable antenna panel includes a first non-movable antenna panel and a second non-movable antenna panel; the movable antenna panel includes a first movable antenna panel and a second movable antenna panel; the first non-movable antenna panel and the second non-movable antenna panel are located at the bottom, and a telescopic rod mechanism is installed inside the non-movable antenna panel, the first movable antenna panel and the second movable antenna panel are respectively located above the first non-movable antenna panel and the second non-movable antenna panel, the movable antenna panel is connected to the non-movable antenna panel through the telescopic rod mechanism, and the movable antenna panel moves laterally and normally along the antenna panel under the drive of the telescopic rod mechanism.

[0008] Furthermore, the telescopic rod mechanism includes: an outer shell, an external gear, a crank structure, and a telescopic rod; the telescopic rod is connected to the outer shell by means of a sleeve, and the two are slidably matched. A linear motor is used inside to drive its telescopic movement, and the round rod part of the crank structure is connected to the telescopic rod by means of a sleeve, and the two are slidably matched; the external gear is fixed to the outer shell by means of a top screw, and driving the external gear to rotate can drive the telescopic rod mechanism as a whole to rotate around its axis.

[0009] Furthermore, the first immovable antenna plate and the second immovable antenna plate are both provided with a semi-open circular groove and a circular cavity, wherein the semi-open circular groove is used for the telescopic rod with a crank structure to extend and contract, and the circular cavity is used for installing the housing of the telescopic rod mechanism; after the telescopic rod mechanism is fully extended, the external gear can be driven to rotate in the semi-open circular groove and the circular cavity;

[0010] The first movable antenna plate and the second movable antenna plate are both provided with circular holes, which are used to connect with the axis of the crank structure on the telescopic rod mechanism, and the two can rotate relative to each other after the connection; the first movable antenna plate and the second movable antenna plate are also provided with concave cavities, which are used to provide storage space for the crank structure when the telescopic rod is in the folded state.

[0011] Furthermore, in order to make the lower surface of the antenna plate just flush after the telescopic rod rotates, the axis of the circular hole on the movable antenna plate and the axis of the circular hole on the immovable antenna plate need to satisfy the following relationship:

[0012]

[0013] Wherein: δ1 is the distance between the center line of the circular hole and the lower surface of the movable antenna plate, δ2 is the distance between the axis of the telescopic rod mechanism and the lower surface of the immovable antenna plate, and d is the thickness of the antenna plate.

[0014] Furthermore, in order to make the unfolding and folding movement of the antenna plate stable and reliable, each moving antenna plate is supported and driven by at least two sets of telescopic rod mechanisms, and the two sets of antenna plates are required to be synchronously extended and rotated; the telescopic rod extension and rotation speeds are controlled to ensure accurate synchronization. The telescopic rod mechanism includes a first telescopic rod mechanism, a second telescopic rod mechanism, a third telescopic rod mechanism, and a fourth telescopic rod mechanism.

[0015] Furthermore, the first telescopic rod mechanism, the second telescopic rod mechanism (including the crank structure on the first telescopic rod mechanism and the second telescopic rod mechanism), the second immovable antenna plate, and the first movable antenna plate form a parallelogram in the span direction. When the first telescopic rod mechanism and the second telescopic rod mechanism rotate 180 degrees synchronously after extension, the first movable antenna plate will be driven to move to a position flush with the first immovable antenna plate.

[0016] Furthermore, the telescopic rod mechanism also includes a rotating drive member, a first locking mechanism, and a second locking mechanism; the moving antenna plate also includes a circular hole cover plate to facilitate the assembly of the crank structure and the moving antenna plate; the crank structure also includes a through hole for locking the entire mechanism using a rod locking mechanism in the expanded and folded states; the moving antenna plate is a leading edge swept structure, and the reconnaissance missile has better aerodynamic characteristics after the moving antenna plate is fully expanded.

[0017] Furthermore, the rotating drive component includes a first motor, a connecting rod and a transmission gear set. The first motor drives the external gear fixed to the telescopic rod to rotate through the transmission gear set, thereby driving the telescopic rod to rotate; the first locking mechanism includes a second motor, a screw, a slider rod, and a baffle with a guide rail. The second motor drives the screw to rotate. Due to the limitation of the baffle with a guide rail, the slider rod can only move translationally along the axis direction of the screw. The slider rod is inserted into the through hole of the crank mechanism to complete the locking of the mechanism; the second locking mechanism is the same as the first locking mechanism.

[0018] The present invention provides a compact reconnaissance aircraft antenna panel deployment and folding mechanism, characterized in that the lower surfaces of the immovable antenna panel and the movable antenna panel are detection sensor surfaces, and these surfaces are required to be flush after deployment; the process of the antenna panel deployment and folding movement is as follows:

[0019] Step 1: Establish an XYZ coordinate system, the telescopic rod mechanism is synchronously extended and drives the moving antenna plate to move along the ±y direction of the span direction through the crank structure, and the moving antenna plate is fully unfolded in the span direction;

[0020] Step 2: The telescopic rod mechanism rotates synchronously 180 degrees along the telescopic rod axis under the action of the external torque, and drives the movable antenna plate to move downward along the -z direction through the crank structure, so that the movable antenna plate is flush with the lower surface of the immovable antenna plate;

[0021] Step 3: All the above movement processes are reversible, and the antenna plate can be folded by reverse movement; the antenna plate needs to be locked in both the unfolded and folded states, and the crank structure can be locked.

[0022] The beneficial effects of the present invention compared with the prior art are:

[0023] The present invention uses a rotating telescopic rod to design a compact antenna plate extension and folding mechanism, which can ensure that the working surface of the antenna plate is flush after it is unfolded. The unfolding / folding mechanism cleverly integrates all parts inside the antenna plate, occupies a small space, does not change the appearance of the antenna plate, and is particularly suitable for scenes with limited space. It can be used for the unfolding and folding of antenna plates for aircraft such as reconnaissance missiles and reconnaissance satellites. The present invention expands the function of the traditional telescopic unfolding solution and provides a new solution for the unfolding and folding of antenna plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall mechanism of a compact deployment and folding mechanism of an antenna panel of a reconnaissance aircraft before deployment of the present invention;

[0025] Figure 2 It is a schematic diagram of the overall mechanism of a compact deployment and folding mechanism of an antenna panel of a reconnaissance aircraft after being deployed in the span direction according to the present invention;

[0026] Figure 3 It is a schematic diagram of the overall mechanism of a compact reconnaissance aircraft antenna panel deployment and retraction mechanism after normal deployment of the present invention;

[0027] Figure 4 It is a schematic diagram of a compact reconnaissance aircraft antenna panel deployment and folding mechanism telescopic rod mechanism folded state of the present invention;

[0028] Figure 5 It is a schematic diagram of the extended state of the telescopic rod mechanism of the compact reconnaissance aircraft antenna panel deployment and folding mechanism of the present invention;

[0029] Figure 6 is a schematic structural diagram of a first immovable antenna plate;

[0030] Figure 7 is a schematic structural diagram of a second immovable antenna plate;

[0031] Figure 8 is a schematic structural diagram of a first moving antenna plate;

[0032] Fig. 9 is a schematic structural diagram of a second moving antenna plate;

[0033] Fig.10 It is a schematic diagram of the assembly of the telescopic rod mechanism and the immovable antenna plate (in the folded state);

[0034] Fig.11 It is a schematic diagram of the assembly of the telescopic rod mechanism and the immovable antenna plate (expanded in the span direction);

[0035] Fig.12 It is a schematic diagram of the assembly of the telescopic rod mechanism and the immovable antenna plate (fully unfolded);

[0036] Fig.13 It is a schematic diagram of the assembly of the telescopic rod mechanism, the first immovable antenna plate and the first movable antenna plate (in the retracted state);

[0037] Fig.14 This is a schematic diagram of a folded state of an embodiment of the present invention;

[0038] Fig.15 is a schematic diagram of a rotating driving member in an embodiment of the present invention;

[0039] Fig.16 It is a schematic diagram of assembling the rotating driving member and the telescopic rod in an embodiment of the present invention;

[0040] Fig.17 Schematic diagram of the crank structure in an embodiment of the present invention;

[0041] Fig.18 It is a schematic diagram of assembling the crank structure and the moving antenna plate in an embodiment of the present invention;

[0042] Fig.19 is a schematic diagram of a rod locking mechanism in an embodiment of the present invention;

[0043] Fig. 20 It is a schematic diagram of the locking process of the plunger locking mechanism in the embodiment;

[0044] Fig.21 This is an intention of the fully extended state of the moving antenna panel in the embodiment;

[0045] Fig. 22 It is a schematic diagram of the moving antenna plate after normal movement in the embodiment.

[0046] Among them, 1-first immovable antenna plate, 2-second immovable antenna plate, 3-first movable antenna plate, 4-second movable antenna plate, 5-first telescopic rod mechanism, 6-second telescopic rod mechanism, 7-third telescopic rod mechanism, 8-fourth telescopic rod mechanism, 9-housing, 10-external gear, 11-crank structure, 12-telescopic rod, 13-semi-open circular groove, 14-circular hole, 15-circular hole, 16-concave cavity, 17-rotating drive member, 18-first locking mechanism, 19-second locking mechanism, 20-circular hole cover plate, 21-first motor, 22-connecting rod, 23-transmission gear set, 24-through hole, 25-second motor, 26-screw, 27-slider plug, 28-baffle with guide rail. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail by enumerating examples below. It should be noted that the specific implementation described here is only used to explain the present invention and is not used to limit the present invention.

[0048] The present invention uses a telescopic rod to realize the span-wise movement of the antenna plate, and realizes the normal movement of the movable antenna plate by rotating the telescopic rod, so that the movable antenna plate is flush with the lower surface of the immovable antenna plate after being unfolded, and the unfolding process is reversible, and the antenna plate can be folded after being unfolded. The overall assembly diagram of the antenna plate unfolding / folding mechanism of the present invention is shown in FIG. Figure 1 As shown. The mechanism includes: an immovable antenna plate, a movable antenna plate, a telescopic rod mechanism, and a driving mechanism; the immovable antenna plate includes a first immovable antenna plate 1 and a second immovable antenna plate 2; the movable antenna plate includes a first movable antenna plate 3 and a second movable antenna plate 4; the first immovable antenna plate 1 and the second immovable antenna plate 2 are located at the bottom, and a telescopic rod mechanism is installed inside the immovable antenna plate. The first movable antenna plate 3 and the second movable antenna plate 4 are respectively located above the first immovable antenna plate 1 and the second immovable antenna plate 2. The movable antenna plate is connected to the immovable antenna plate through the telescopic rod mechanism, and the movable antenna plate moves laterally and normally along the antenna plate under the drive of the telescopic rod mechanism. The lower surfaces of the first immovable antenna plate 1, the second immovable antenna plate 2 and the first movable antenna plate 3, the second movable antenna plate 4 are detection sensor surfaces, and these surfaces are required to be flush after unfolding. The principles of the unfolding and retracting movements of the antenna plates are as follows:

[0049] Step 1: The telescopic rod mechanisms (the first telescopic rod mechanism 5, the second telescopic rod mechanism 6, the third telescopic rod mechanism 7, and the fourth telescopic rod mechanism 8) are extended synchronously and the crank drives the moving antenna plates 3 and 4 along the span direction ( Figure 1 ±y direction) until the first moving antenna plate 3 and the second moving antenna plate 4 are fully unfolded in the span direction, such as Figure 2 As shown;

[0050] Step 2: The telescopic rod mechanism (the first telescopic rod mechanism 5, the second telescopic rod mechanism 6, the third telescopic rod mechanism 7, and the fourth telescopic rod mechanism 8) rotates synchronously 180 degrees along the telescopic rod axis under the action of the external torque, and drives the moving antenna plate downward through the crank ( Figure 2 -z direction) so that the movable antenna plate is flush with the lower surface of the immovable antenna plate, such as Figure 3 shown.

[0051] Step 3: The above movement process is all reversible, and the antenna board can be folded by reverse movement.

[0052] The main components and features of the deployment and folding mechanism are as follows:

[0053] (1) The retracted state and extended state of the telescopic rod mechanism are respectively as follows Figure 4 and Figure 5 As shown, the parts of the telescopic rod mechanism are: a housing 9, an external gear 10, a crank structure 11, and a telescopic rod 12. The telescopic rod 12 is connected to the housing 9 by a sleeve, and the two are slidably matched. A linear motor is used inside to drive its telescopic movement. The round rod part of the crank structure 11 is connected to the telescopic rod 12 by a sleeve, and the two are slidably matched; the external gear 10 is fixed to the housing 9 by a top screw, and driving the external gear to rotate can drive the telescopic rod mechanism as a whole to rotate around its axis. The telescopic rod mechanism can be extended or contracted along the length direction under the action of the linear motor, depending on the direction of the current. The telescopic rod technology is now relatively mature and can be purchased directly or customized according to size and stroke requirements. The external gear 10 is fixed to the housing 9, and driving the external gear can drive the telescopic rod mechanism as a whole to rotate around its axis.

[0054] (2) In order to ensure the stability and reliability of the unfolding and folding of the antenna panel, each moving antenna panel is supported and driven by at least two sets of telescopic rod mechanisms, and the two sets of antenna panels are required to be retracted and rotated synchronously. Therefore, it is necessary to control the retracting and rotating speed of the telescopic rods to ensure accurate synchronization.

[0055] (3) The first immovable antenna plate 1 and the second immovable antenna plate 2 are provided with a semi-open circular groove 13 and a circular cavity 14, such as Figure 6 and Figure 7 The semi-open circular groove 13 is used for the telescopic rod with a crank structure to extend and retract, and the circular cavity 14 is used to install the housing 9 of the telescopic rod mechanism. After the telescopic rod mechanism is fully extended, the outer gear 10 can be driven to rotate in the semi-open circular groove 13 and the circular cavity 14.

[0056] (4) The first moving antenna plate 3 and the second moving antenna plate 4 are provided with a circular hole 15, such as Figure 8 and Fig. 9 The circular hole is used to connect with the axis of the crank structure 11 on the telescopic rod mechanism, and the two can rotate relative to each other after the connection. The moving antenna plate is provided with a concave cavity 16, which is used to provide storage space for the crank structure 11 when the telescopic rod is in the folded state.

[0057] (5) The first telescopic rod mechanism 5, the second telescopic rod mechanism 6 (including the crank structure 11 on the two telescopic rod mechanisms), the immovable antenna plate 2, and the movable antenna plate 3 form a parallelogram in the span direction. When the telescopic rods 5 and 6 rotate 180 degrees synchronously after extension, the movable antenna plate 3 will be driven to move to a position flush with the immovable antenna plate 1.

[0058] (6) In order to make the lower surface of the antenna plate just flush after the telescopic rod rotates, the axis of the hole 14 on the movable antenna plate and the axis of the circular hole 15 on the immovable antenna plate need to satisfy the following relationship:

[0059]

[0060] Wherein: δ1 is the distance between the center line of the circular hole 15 and the lower surface of the movable antenna plate, δ2 is the distance between the axis of the telescopic rod mechanism and the lower surface of the immovable antenna plate, and d is the thickness of the antenna plate.

[0061] (7) The effect after the fixed antenna plates 1 and 2 are assembled with the telescopic rod mechanisms 5 to 8 is as follows: Figure 10 to Figure 13 As shown. Among them, Fig.10 This is the state before the telescopic rod is extended. Fig.11 The telescopic rod is extended. Fig.12 It is the state after the telescopic rod mechanism rotates 180 degrees around the center line. Fig.13 The assembly effect of the immovable antenna plate 1, the telescopic rod mechanism (the first telescopic rod mechanism 5, the second telescopic rod mechanism 6, the third telescopic rod mechanism 7, the fourth telescopic rod mechanism 8), and the first movable antenna plate 3 is given (the complete assembly effect is shown in Figure 1 (8) The antenna plate needs to be locked in both the unfolded and folded states, and the crank can be locked.

[0062] Designed an antenna plate deployment mechanism for a reconnaissance missile, such as Fig.14 As shown. This application case adds some additional parts on the basis of the basic structure of the present invention described above: the telescopic rod mechanism adds a rotating drive member 17, a first locking mechanism 18 and a second locking mechanism 19, the moving antenna adds a round hole cover plate 20, and the telescopic rod crank adds a through hole 24. In addition, the first moving antenna plate 3 and the second moving antenna plate 4 are designed to have a swept leading edge, so that the reconnaissance bomb has better aerodynamic characteristics after the first moving antenna plate 3 and the second moving antenna plate 4 are fully deployed.

[0063] The following is a functional description of the main new parts:

[0064] (1) Fig.15 As shown, the rotating driving member 17 is composed of a first motor 21, a connecting rod 22 and a transmission gear set 23. The first motor 21 drives the outer gear 10 fixedly connected to the telescopic rod to rotate through the transmission gear set 23, thereby driving the telescopic rod to rotate. The connection diagram of the rotating driving member 17 and the telescopic rod is shown in FIG. Fig.16 shown.

[0065] (2) Fig.17 As shown, a through hole 24 is added to the crank structure 11 for locking the entire mechanism using a rod locking mechanism in the unfolded and folded states.

[0066] (3) The connection scheme between the crank structure 11 and the first moving antenna plate 3 is as follows Fig.18 A detachable cover plate 20 is designed under the moving antenna plate to facilitate the assembly of the crank structure 11 and the moving antenna plate.

[0067] (4) The first locking mechanism 18 is composed of a second motor 25, a screw 26, a slider rod 27, and a baffle 28 with a guide rail. Fig.19 The second motor 25 drives the screw rod 26 to rotate, and the slider rod 27 can only move in translation along the axis direction of the screw rod 26 due to the restriction of the baffle plate 28 with the guide rail. Fig. 22 A schematic diagram of the locking process of the plunger locking mechanism is given, where the plunger 27 is inserted into the through hole 24 of the crank mechanism to complete the locking of the mechanism.

[0068] The following is the expansion and collapse process of this implementation case:

[0069] Step 1: The antenna board is initially in the folded state, such as Fig.14 Before unfolding, the second motor 25 in the first locking mechanism 18 drives the screw 26 to rotate, and the slider rod 26 moves along the rod axis under the constraint of the baffle 28 with the guide rail, and retracts from the through hole 24 on the crank structure 11 to complete unlocking.

[0070] Step 2: The telescopic rod 5 is extended under the action of the synchronous linear motor, and the movable antenna plates 3 and 4 are pushed to unfold along the span direction through the crank structure 11 on the telescopic rod. The effect of the unfolding in the span direction is as follows: Fig.21 shown.

[0071] Step 3: After the first movable antenna plate 3 and the second movable antenna plate 4 are fully unfolded in the span direction, the first telescopic rod mechanism 5 rotates 180 degrees under the drive of the rotary drive member 17, and the other telescopic rods are the same. The rotation of the four telescopic rod mechanisms drives the first movable antenna plate 3 and the second movable antenna plate 4 to complete the normal movement. According to the movement rule of the parallelogram, after the crank structure 11 rotates 180 degrees along the axis of the telescopic rod, the first movable antenna plate 3 and the second movable antenna plate 4 will move to a position flush with the immovable antenna plates 1 and 2, such as Fig. 22 shown.

[0072] Step 4: After the first moving antenna plate 3 and the second moving antenna plate 4 complete the normal movement, the second motor 25 in the second locking mechanism 19 starts to work, so that the slider rod 27 extends into the through hole 24 in the crank structure 11 to complete the locking.

[0073] Step 5: The above movement process is reversible, and the antenna board can be folded by reverse movement.

[0074] In order to further verify the feasibility of the technical solution of the present invention, a demonstration model of the antenna panel deployment / folding was made. In order to improve the demonstration effect, an aircraft shell was configured for the deployment mechanism. Among them, the right antenna panel in the flight direction is equipped with an deployment / folding mechanism, and the left antenna panel is fixed relative to the aircraft shell.

[0075] The above case verifies that the technical solution of the present invention is feasible and can drive the antenna plate to move in the span direction and normal direction, so that the lower surface of the antenna plate after deployment is flat, meeting the requirements of the reconnaissance missile.

[0076] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A compact reconnaissance aircraft antenna panel deployment and folding mechanism, characterized in that: The mechanism includes: a non-movable antenna plate, a movable antenna plate, a telescopic rod mechanism, and a driving mechanism; The immovable antenna plate comprises a first immovable antenna plate (1) and a second immovable antenna plate (2); The movable antenna plate comprises a first movable antenna plate (3) and a second movable antenna plate (4); The first immovable antenna plate (1) and the second immovable antenna plate (2) are located at the bottom, and a telescopic rod mechanism is installed inside the immovable antenna plate. The first movable antenna plate (3) and the second movable antenna plate (4) are respectively located above the first immovable antenna plate (1) and the second immovable antenna plate (2). The movable antenna plate is connected to the immovable antenna plate through the telescopic rod mechanism, and the movable antenna plate moves laterally and normally along the antenna plate under the drive of the telescopic rod mechanism.

2. A compact reconnaissance aircraft antenna panel deployment and folding mechanism according to claim 1, characterized in that: The telescopic rod mechanism comprises: a housing (9), an external gear (10), a crank structure (11), and a telescopic rod (12); the telescopic rod (12) is connected to the housing (9) by means of a sleeve, the two are slidably matched, and a linear motor is used inside to drive its telescopic movement; the round rod part of the crank structure (11) is connected to the telescopic rod (12) by means of a sleeve, the two are slidably matched; the external gear (10) is fixedly connected to the housing (9) by means of a jackscrew, and driving the external gear to rotate can drive the telescopic rod mechanism as a whole to rotate around its axis.

3. A compact reconnaissance aircraft antenna panel deployment and folding mechanism according to claim 2, characterized in that: The first immovable antenna plate (1) and the second immovable antenna plate (2) are both provided with a semi-open circular groove (13) and a circular cavity (14), wherein the semi-open circular groove (13) allows the telescopic rod (12) with a crank structure to perform extension and contraction movements, and the circular cavity (14) is used to install the housing (9) of the telescopic rod mechanism; after the telescopic rod mechanism is fully extended, the external gear (10) can be driven to rotate in the semi-open circular groove (13) and the circular cavity (14); The first movable antenna plate (3) and the second movable antenna plate (4) are both provided with a circular hole (15), and the circular hole (15) is used to be connected to the axis of the crank structure (11) on the telescopic rod mechanism, and the two can rotate relative to each other after the connection; the first movable antenna plate (3) and the second movable antenna plate (4) are also provided with a concave cavity (16) for providing storage space for the crank structure (11) when the telescopic rod is in a folded state.

4. A compact reconnaissance aircraft antenna panel deployment and folding mechanism according to claim 3, characterized in that: In order to make the lower surface of the antenna plate just flush after the telescopic rod rotates, the axis of the circular hole (14) on the movable antenna plate and the axis of the circular hole (15) on the immovable antenna plate need to satisfy the following relationship: Wherein: δ1 is the distance between the center line of the circular hole (15) and the lower surface of the movable antenna plate, δ2 is the distance between the axis of the telescopic rod mechanism and the lower surface of the immovable antenna plate, and d is the thickness of the antenna plate.

5. A compact reconnaissance aircraft antenna panel deployment and folding mechanism according to claim 1, characterized in that: In order to make the unfolding and folding movement of the antenna plate stable and reliable, each moving antenna plate is supported and driven by at least two sets of telescopic rod mechanisms, and the two sets of antenna plates are required to telescope and rotate synchronously; The telescopic rod extension and rotation speed are controlled to ensure accurate synchronization.

6. A compact reconnaissance aircraft antenna panel deployment and folding mechanism according to claim 5, characterized in that: The telescopic rod mechanism comprises a first telescopic rod mechanism (5), a second telescopic rod mechanism (6), a third telescopic rod mechanism (7), and a fourth telescopic rod mechanism (8).

7. A compact reconnaissance aircraft antenna panel deployment and folding mechanism according to claim 6, characterized in that: The first telescopic rod mechanism (5), the second telescopic rod mechanism (6) (including the crank structures on the first telescopic rod mechanism (5) and the second telescopic rod mechanism (6)), the second immovable antenna plate (2), and the first movable antenna plate (3) form a parallelogram in the span direction. When the first telescopic rod mechanism (5) and the second telescopic rod mechanism (6) are synchronously rotated 180 degrees after being extended, the first movable antenna plate (3) is driven to move to a position flush with the first immovable antenna plate (1).

8. A compact reconnaissance aircraft antenna panel deployment and folding mechanism according to claim 6, characterized in that: The telescopic rod mechanism also includes a rotating drive member (17), a first locking mechanism (18), and a second locking mechanism (19); the moving antenna plate also includes a circular hole cover plate (20) to facilitate assembly of the crank structure (11) and the moving antenna plate; the crank structure (11) also includes a through hole (24) for locking the entire mechanism using the rod locking mechanism in the expanded and folded states.

9. A compact reconnaissance aircraft antenna panel deployment and folding mechanism according to claim 8, characterized in that: The rotating driving member (17) comprises a first motor (21), a connecting rod (22) and a transmission gear set (23). The first motor (21) drives the outer gear (10) fixedly connected to the telescopic rod to rotate through the transmission gear set (23), thereby driving the telescopic rod (12) to rotate; the first locking mechanism (18) comprises a second motor (25), a screw rod (26), a slider rod (27), and a baffle plate with a guide rail (28). The second motor (25) drives the screw rod (26) to rotate. Due to the limitation of the baffle plate with a guide rail (28), the slider rod (27) can only move in a translational manner along the axis of the screw rod (26). The slider rod (27) is inserted into the through hole (24) of the crank mechanism to complete the locking of the mechanism; the second locking mechanism (19) is the same as the first locking mechanism.

10. A compact reconnaissance aircraft antenna panel deployment and folding mechanism according to any one of claims 1 to 9, characterized in that: The lower surfaces of the immovable antenna plate and the movable antenna plate are detection sensor surfaces, and these surfaces are required to be flush after unfolding; the process of unfolding and retracting the antenna plate is as follows: Step 1: Establish an XYZ coordinate system, the telescopic rod mechanism is synchronously extended and the moving antenna plate is driven to move along the ±y direction of the span direction through the crank structure (11), and the moving antenna plate is fully unfolded in the span direction; Step 2: The telescopic rod mechanism rotates synchronously 180 degrees along the telescopic rod axis under the action of the external torque, and drives the movable antenna plate to move downward along the -z direction through the crank structure (11), so that the movable antenna plate is flush with the lower surface of the immovable antenna plate; Step 3: The above movement process is all reversible, and the antenna board can be folded by reverse movement; The antenna plate needs to be locked both in the unfolded and folded states, and this can be done by locking the crank structure (11).

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