Aircraft target alignment device and aircraft target alignment method using the same

Abstract

The present application relates to a kind of aircraft calibration device and the aircraft calibration method using the device, aircraft calibration device includes walking car, six degrees of freedom mobile platform is equipped on the walking car, six degrees of freedom mobile platform is equipped with installation in the installation frame parallel with the symmetric midline of aircraft, the installation frame is equipped with upper target plate mounting plate and lower target plate mounting plate along vertical direction parallel distribution to install target plate, rotating frame is equipped on the lower target plate mounting plate, rotating frame is driven to prevent target plate from interfering when walking car turns, the position of walking car is defined with support mechanism.The present application installs different target plates by target frame, and adjusts position by walking car and six degrees of freedom mobile platform, without manual adjustment, ensure the position accuracy of target plate;Target plate installed on the lower target plate mounting plate is protected by rotating frame, to prevent walking car from damaging target plate during transportation.

Description

Technical Field

[0001] This invention relates to the field of aircraft testing devices, specifically an aircraft calibration device and a method for calibrating aircraft using the device. Background Technology

[0002] The application of head-up display (HUD) technology in aircraft dates back to early times, mainly used to display flight information and facilitate pilot operation. With the development of technology, aircraft have continuously added various sensors, all of which require calibration after installation. At the same time, the aircraft's observation and aiming systems, reconnaissance systems, and weapon launching systems also require calibration before use. Traditional calibration requires multiple people to work together, adjusting the aircraft's attitude through multiple measurements and equipment such as trailer hydraulic devices. This is inefficient, consumes a lot of resources, and the accuracy of multi-person adjustments cannot be guaranteed. Therefore, an aircraft calibration device and an aircraft calibration method using this device were designed to solve the above problems. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention proposes an aircraft target calibration device and a method for aircraft target calibration using the same device. The technical problem to be solved by this invention is achieved through the following technical solution:

[0004] An aircraft target calibration device includes a traveling vehicle with a six-degree-of-freedom moving platform. The six-degree-of-freedom moving platform has a mounting frame installed parallel to the centerline of the aircraft's symmetry. The mounting frame has an upper target plate mounting plate and a lower target plate mounting plate arranged parallel to each other in the vertical direction for mounting target plates. The lower target plate mounting plate has a rotating frame that drives the target plate to rotate to prevent interference when the traveling vehicle turns. The traveling vehicle has a support mechanism that limits the position of the traveling vehicle.

[0005] The mounting frame includes a base plate connected to a six-degree-of-freedom moving platform. The base plate is provided with a connecting frame for fixing the upper target plate mounting plate and the lower target plate mounting plate. The base plate is also provided with a first diagonal brace connected to the connecting frame to support the connecting frame.

[0006] Multiple secondary diagonal braces are provided between the connecting frame and the primary diagonal brace to increase stability.

[0007] Both the upper and lower target plate mounting plates are equipped with target frames for mounting the target plates. The target frame includes a column parallel to the centerline of the aircraft's symmetry. Several sets of mounting beams are provided on the column, and the mounting beams are equipped with a frame for mounting the target plates.

[0008] The column is equipped with an angle sensor to detect the angle of the column.

[0009] The rotating frame includes a frame for mounting on a target plate, the frame having a single-ear connecting plate, the single-ear connecting plate cooperating with a double-ear connecting plate connected to a lower target plate mounting plate, and a bolt providing rotation guidance between the double-ear connecting plate and the single-ear connecting plate.

[0010] The single-ear connecting plate is provided with a limiting platform that abuts against the double-ear connecting plate to limit the rotation angle of the frame.

[0011] The bolts are fitted with damping liner to provide support to the frame and prevent the frame from rotating on its own due to gravity.

[0012] The support mechanism includes a lead screw that is threaded into the vehicle, and a support block that abuts against the ground to provide support force and ensure the stability of the vehicle.

[0013] An aircraft target calibration method, comprising the following steps:

[0014] Step 1: Park the aircraft according to the standard, and then push the moving vehicle to position the target plate 20 meters directly in front of the aircraft's nose;

[0015] Step 2: Install a laser target alignment mirror on the target alignment bracket at the rear of the aircraft. The laser target alignment mirror emits a laser beam that is directed to the reference point reflector of the corresponding target plate.

[0016] Step 3: Adjust the position of the corresponding target plate using a six-degree-of-freedom moving platform so that the laser is located at the center of the target plate reference mirror, thus completing the relative position adjustment between the aircraft and the frame;

[0017] Step 4: After calibration, the target plate on the frame serves as the calibration reference for other targets on the aircraft. The laser calibration mirror is installed on the calibration bracket that needs calibration. The laser calibration mirror emits a laser beam that falls on the corresponding target plate. The deviation value is read by the engraving on the corresponding target plate.

[0018] Step 5: Depending on the different target points on the aircraft, the deviation value is input into the aircraft computer system for automatic correction or manual correction so that the laser emitted by the optical calibration mirror falls on the center of the corresponding target plate reference point reflector.

[0019] The beneficial effects of this invention are: different target plates are installed on the target frame, and their positions are adjusted by a traveling vehicle and a six-degree-of-freedom moving platform, eliminating the need for manual adjustment and ensuring the positional accuracy of the target plates; the rotating frame protects the target plates installed on the lower target plate mounting plate, preventing damage to the target plates during transportation. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a front view structural diagram of the present invention;

[0022] Figure 2 This is a side view of the structure of the present invention;

[0023] Figure 3 For the present invention Figure 1 A magnified view of I;

[0024] Figure 4 This is a schematic diagram of the single-ear connecting plate structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the support mechanism structure of the present invention.

[0026] The diagram shows: 1. Walking vehicle; 2. Six-degree-of-freedom moving platform; 3. Angle sensor; 4. Mounting frame; 5. Target plate; 6. Upper target plate mounting plate; 7. Lower target plate mounting plate; 8. Rotating frame; 9. Target frame; 10. Column; 11. Mounting beam; 12. Frame body; 13. Support mechanism; 41. Base plate; 42. Connecting frame; 43. First diagonal brace; 44. Second diagonal brace; 81. Frame; 82. Single-ear connecting plate; 83. Double-ear connecting plate; 84. Bolt; 85. Limiting platform; 86. Damping liner; 131. Lead screw; 132. Support block; 133. Lead screw sleeve; 134. Rotating handwheel. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described more clearly and completely below with reference to the accompanying drawings in the embodiments. Of course, the described embodiments are only a part of the present invention and not all of it. Based on this embodiment, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of the present invention.

[0028] like Figures 1 to 5 As shown, an aircraft target calibration device includes a traveling vehicle 1, on which a six-degree-of-freedom moving platform 2 is mounted. The six-degree-of-freedom moving platform 2 is mounted on a mounting frame 4 parallel to the centerline of the aircraft. The mounting frame 4 is provided with an upper target plate mounting plate 6 and a lower target plate mounting plate 7, which are arranged parallel to each other in the vertical direction to mount target plates 5. The lower target plate mounting plate 7 is provided with a rotating frame 8 to drive the target plate 5 to rotate and prevent the target plate 5 from interfering with the target plate 5 when the traveling vehicle 1 turns. The traveling vehicle 1 is provided with a support mechanism 13 to limit the position of the traveling vehicle 1. The six-degree-of-freedom moving platform 2 performs multi-degree-of-freedom movement through the cooperation of six hydraulic cylinders, adjusting the positions of the upper target plate mounting plate 6 and the lower target plate mounting plate 7 to drive the corresponding target plate 5 to adjust to a specified position.

[0029] The mounting frame 4 includes a base plate 41 connected to the six-degree-of-freedom moving platform 2. The base plate 41 is provided with a connecting frame 42 for fixing the upper target plate mounting plate 6 and the lower target plate mounting plate 7. The base plate 41 is provided with a first diagonal brace 43 connected to the connecting frame 42 to support the connecting frame 42. The upper target plate mounting plate 6 and the lower target plate mounting plate 7 are mounted on the connecting frame 42.

[0030] Multiple secondary diagonal braces 44 are provided between the connecting frame 42 and the first diagonal brace 43 to increase stability; the secondary diagonal braces 44 divide the area between the connecting frame 42 and the first diagonal brace 43 into multiple triangular regions to increase the stability of the connecting frame 42 and the first diagonal brace 43.

[0031] Both the upper target plate mounting plate 6 and the lower target plate mounting plate 7 are equipped with target frames 9 for mounting the target plates 5. The target frame 9 includes a column 10 parallel to the centerline of the aircraft's symmetry. The column 10 is equipped with several sets of mounting beams 11, and the mounting beams 11 are equipped with a frame 12 for mounting the target plates 5. Different types of target plates 5 are mounted on the frame 12. The column 10 is parallel to the centerline of the aircraft's symmetry, and the frame 12 is designed to conform to the shape of the target plates 5 so that the position of the target plates 5 is consistent with the position of the aircraft sensors, thereby improving the accuracy of the measurement.

[0032] An angle sensor 3 is provided on the column 10 to detect the angle of the column 10.

[0033] The rotating frame 8 includes a frame 81 for mounting the target plate 5. The frame 81 is provided with a single-ear connecting plate 82. The single-ear connecting plate 82 is fitted with a double-ear connecting plate 83 connected to the lower target plate mounting plate 7. A bolt 84 is provided between the double-ear connecting plate 83 and the single-ear connecting plate 82 to provide rotation guidance. The double-ear connecting plate 83 is connected to the target frame 9. The rotation guidance is improved by the bolt 84. The frame 81 is folded around the bolt 84. The traveling vehicle 1 needs to turn during movement, but the rotation of the traveling wheels will interfere with the frame 81. At the same time, the target plate 5 on the frame 81 is easily damaged by bumps during transportation. Therefore, the frame 81 is folded after the target calibration is completed.

[0034] The single-ear connecting plate 82 is provided with a limiting platform 85 that abuts against the double-ear connecting plate 83 to limit the rotation angle of the frame 81; the limiting platform 85 limits the folding angle of the frame 81 to prevent the frame 81 from folding too much and not being in a planar state, thus affecting the final test accuracy.

[0035] The bolt 84 is fitted with a damping liner 86 that provides support to the frame 81 and prevents the frame 81 from rotating on its own due to gravity. The damping liner 86 generates friction between the double-ear connecting plate 83 and the single-ear connecting plate 82, thereby providing support to the frame 81 and preventing the frame 81 from suddenly flipping over during movement after being folded, which would damage the target plate 5 on the frame 81.

[0036] The support mechanism 13 includes a lead screw 131 that is threadedly engaged with the traveling vehicle 1. The lead screw 131 is provided with a support block 132 that abuts against the ground to provide support force and ensure the stability of the traveling vehicle 1. The traveling vehicle 1 is provided with a lead screw sleeve 133 that engages with the lead screw 131. A rotating handwheel 134 is connected to the end of the lead screw 131 away from the support block 132.

[0037] An aircraft target calibration method, comprising the following steps:

[0038] Step 1: Park the aircraft according to the standard, then push the traveling vehicle 1 so that the target plate 5 is 20 meters in front of the aircraft nose. Then turn the rotating handwheel 134 so that the lead screw 131 drives the support block 132 to abut against the ground and lock the position of the traveling vehicle 1, ensuring the stability of the traveling vehicle 1 during the target calibration process.

[0039] Step 2: Install a laser target alignment mirror on the target alignment bracket corresponding to the aircraft. The laser target alignment mirror emits a laser beam that is directed to the reference point reflector of the corresponding target plate 5.

[0040] Step 3: Adjust the position of the target plate 5 using the six-degree-of-freedom moving platform 2 so that the laser is located at the center of the reference point reflector of the target plate 5, thus completing the relative position adjustment between the aircraft and the frame 81.

[0041] Step 4: After calibration, the target plate 5 on frame 81 serves as the calibration reference for other targets on the aircraft. The laser calibration mirror is installed on the calibration bracket that needs calibration. The laser calibration mirror emits a laser beam that falls on the corresponding target plate 5. The deviation value is read by the engraving on the corresponding target plate 5. Since the frame 12 is designed to conform to the shape, the position of the target plate 5 corresponds one-to-one with the position of the aircraft sensor. Once the position of one target plate 5 is calibrated, the positions of the target plates 5 in other positions are automatically determined. Since the position of the target plate 5 is a standard position, the sensors on the aircraft can be adjusted.

[0042] Step 5: Depending on the different target points on the aircraft, the deviation value is input into the aircraft computer system for automatic correction or manual correction so that the laser emitted by the optical calibration mirror falls on the center of the corresponding target plate reference point reflector.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely prisms of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. An aircraft target calibration device, characterized in that: The system includes a traveling vehicle (1), which is equipped with a six-degree-of-freedom moving platform (2). The six-degree-of-freedom moving platform (2) is equipped with a mounting frame (4) installed parallel to the centerline of the aircraft's symmetry. The mounting frame (4) is equipped with an upper target plate mounting plate (6) and a lower target plate mounting plate (7) that are arranged parallel to each other in the vertical direction to mount the target plate (5). The lower target plate mounting plate (7) is equipped with a rotating frame (8) that drives the target plate (5) to rotate to prevent the target plate (5) from interfering when the traveling vehicle (1) turns. The traveling vehicle (1) is equipped with a support mechanism (13) that limits the position of the traveling vehicle (1). The rotating frame (8) includes a frame (81) for mounting on the target plate (5), the frame (81) is provided with a single-ear connecting plate (82), the single-ear connecting plate (82) is fitted with a double-ear connecting plate (83) connected to the lower target plate mounting plate (7), and a bolt (84) is provided between the double-ear connecting plate (83) and the single-ear connecting plate (82) to provide rotation guidance; The single-ear connecting plate (82) is provided with a limiting platform (85) that abuts against the double-ear connecting plate (83) to limit the rotation angle of the frame (81); The bolt (84) is fitted with a damping liner (86) that provides support to the frame (81) and prevents the frame (81) from rotating on its own due to gravity.

2. The aircraft target calibration device according to claim 1, characterized in that: The mounting frame (4) includes a base plate (41) connected to the six-degree-of-freedom moving platform (2). The base plate (41) is provided with a connecting frame (42) for fixing the upper target plate mounting plate (6) and the lower target plate mounting plate (7). The base plate (41) is provided with a first diagonal brace (43) connected to the connecting frame (42) to support the connecting frame (42).

3. The aircraft target calibration device according to claim 2, characterized in that: Multiple secondary diagonal braces (44) are provided between the connecting frame (42) and the first diagonal brace (43) to increase stability.

4. The aircraft target calibration device according to claim 1, characterized in that: Both the upper target plate mounting plate (6) and the lower target plate mounting plate (7) are provided with target frames (9) for mounting on the target plate (5). The target frame (9) includes a column (10) parallel to the centerline of the aircraft's symmetry. The column (10) is provided with several sets of mounting beams (11). The mounting beams (11) are provided with a frame (12) for mounting the target plate (5).

5. The aircraft target calibration device according to claim 4, characterized in that: An angle sensor (3) for detecting the angle of the column (10) is provided on the column (10).

6. The aircraft target calibration device according to claim 1, characterized in that: The support mechanism (13) includes a lead screw (131) that is threaded to the traveling vehicle (1), and the lead screw (131) is provided with a support block (132) that abuts against the ground to provide support force to ensure the stability of the traveling vehicle (1).

7. An aircraft target calibration method using an aircraft target calibration device according to any one of claims 1 to 6, characterized in that: The method includes the following steps: Step 1: Park the aircraft according to the standard, and then push the walking vehicle (1) so that the target plate (5) is 20 meters in front of the nose of the aircraft; Step 2: Install a laser target alignment mirror on the target alignment bracket at the rear of the aircraft. The laser target alignment mirror emits a laser beam that is directed to the reference point reflector of the corresponding target plate (5). Step 3: Adjust the position of the corresponding target plate (5) using the six-degree-of-freedom moving platform (2) so that the laser is located at the center of the reference point reflector of the target plate (5), and complete the relative position adjustment between the aircraft and the frame (81); Step 4: After calibration, the target plate (5) on the frame (81) serves as the calibration reference for other targets on the aircraft. The laser calibration mirror is installed on the calibration bracket that needs calibration. The laser calibration mirror emits a laser beam that falls on the corresponding target plate (5). The deviation value is read by the engraving on the corresponding target plate (5). Step 5: Depending on the different target points on the aircraft, the deviation value is input into the aircraft computer system for automatic correction or manual correction so that the laser emitted by the optical calibration mirror falls on the center of the reference point reflector of the corresponding target plate (5).

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