KR100876095B1 - Pylon Test Structure for Aircraft - Google Patents

Abstract

The present invention relates to an aircraft pylon test structure, wherein the aircraft pilot test structure according to the present invention includes a bottom wall, an upper wall, a first side wall, a second side wall, and a third side wall, wherein the first side wall and the first side wall are provided. A hexagonal body having an opening formed between the two side walls; A plurality of support beams installed to form respective surfaces except for the openings; It is provided between the support beams and provided with a plurality of diagonal beams for supporting the combined state of the support beams, the pilot test structure for aircraft according to the present invention is a vibration test and static test for the pylon in one structure Since it is possible to use the efficient space for the test compared to the conventional test method, and also to reduce the manufacturing cost of the structure, there is an effect that can reduce the working time for the test.

Description

Test fixture for a pylon of airplane

1 is a perspective view showing a pilot test structure for an aircraft according to the present invention.

Figure 2 is a perspective view showing the internal configuration of the pilot test structure for aircraft according to the present invention.

Figure 3 is a perspective view showing the skeleton structure of an aircraft pylon test structure according to the present invention.

Figure 4 is a perspective view partially showing the internal skeleton of an aircraft pylon test structure according to the present invention.

Figure 5 is a state diagram showing the vibration test state as an example of the pilot test for aircraft according to the present invention.

** Description of the symbols for the main parts of the drawings **

100 ... body

110 ... floor wall

120 upper wall

130 ... First side wall

140 ... 2nd side wall                 

150 ... third side wall

160 ... opening

The present invention relates to an aircraft pylon test structure, and more particularly to an aircraft pylon test structure that can be carried out the rigidity, vibration, static load strength of the pylon in one structure.

In general, after the basic structural design of the external structure is made through the initial conceptual design stage, the design of various onboard systems suitable for the basic structure of the aircraft and the selection of necessary equipment are performed. Stiffness, vibration and static load are tested.

Among these payload systems, there is a pylon (Pylon) mounted on the lower wing of various fighter planes, etc. This pylon is intended to combine various weapons and fuel tanks for external mounting to the aircraft. The pylon has Center Pylon, Inboard Pylon and Outboard Pylon depending on the mounting position.Wing tip launcher is installed at the wing tip of the aircraft. have.

These pylons are tested for their stiffness, vibration, and static load characteristics before they are actually installed and then tested for actual design strength.

On the other hand, as a requirement for the stiffness test and the static load test, a load system such as a hydraulic actuator is required to be installed in the test structure, so that a considerable amount of space is required. The requirement for the vibration test is that the test structure has a natural frequency of 40-50. It must withstand vibration of about MHz.

However, to date, no test structure has been developed for the pylon test equipment to secure space for the stiffness test and the static load test, and to withstand the natural frequency of about 40-50 MHz during the vibration test.

Therefore, in the conventional case, for the test of the pylon, a separate test structure was made to perform the stiffness test and the static load test, and a separate test structure for the vibration test was used, and thus, the manufacturing cost of the structure was considerably high. In addition, there is a problem in that the efficiency is very low as two test structures coexist in terms of space utilization.

The present invention is to solve the above problems, an object of the present invention is to secure a test space for strength test and static load test for the pylon of the aircraft and at the same time to withstand natural frequency of about 40-50 MHz for vibration test To provide an aircraft pylon test structure.

The pylon test structure of the aircraft according to the present invention for achieving the above object has a bottom wall, an upper wall, a first side wall, a second side wall and a third side wall, between the first side wall and the second side wall. A hexahedron-shaped body having an opening; A plurality of support beams installed to form respective surfaces except for the openings; It is installed between the support beams, characterized in that it has a plurality of diagonal beams for supporting the combined state of the support beams.

And preferably the support beam comprises a plurality of floor beams formed to intersect each other and forming the bottom wall, wherein the diagonal beams comprise a plurality of floor wall side diagonal beams installed diagonally with respect to the floor beams. It features.

In addition, the support beam preferably includes a plurality of upper beams formed on the bottom wall and intersecting with each other to form the upper wall, wherein the diagonal beams are arranged in a diagonal direction with respect to the upper beams. And an upper wall side diagonal beam.

Also preferably, the support beam includes a plurality of first side wall beams formed between the bottom wall and the upper wall, forming the first side wall, wherein the diagonal beam is diagonally interposed between the first side wall beams. It characterized in that it comprises a plurality of first side wall side diagonal beams installed alternately.

Also preferably, the support beam includes a plurality of second side wall beams formed between the bottom wall and the upper wall, forming a second side wall positioned on a side opposite to the first side wall, wherein the diagonal beam includes: And a plurality of second side wall side diagonal beams installed diagonally between the second side wall beams.                     

Also preferably, the support beam forms a third wall positioned between the first side wall and the second side wall and includes a plurality of third side wall beams and the third side wall beams placed between the bottom wall and the upper wall. And a fourth side wall beam supporting laterally between the diagonal beams, wherein the diagonal beams include a plurality of third side wall diagonal beams installed to cross diagonally between the third side wall beams.

In addition, preferably both sides of the opening is characterized in that the diagonal beam supported in an oblique direction is installed.

In addition, a plurality of exterior plates are coupled to the outside of the upper wall, the first side wall, the second side wall, and the third side wall, and a plurality of bottom plates are coupled to the inside of the bottom wall. do.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1 and FIG. 2 and FIGS. 3 and 4, the aircraft pylon test structure according to the present invention has a bottom wall 110, an upper wall 120, a first side wall 130, and a second side wall ( And a third side wall 150, the body 100 having a hexahedron shape having an opening 160 formed between the first side wall 130 and the second side wall 140.

Here, each of the walls 110, 120, 130, 140, and 150 except for the opening 160 may include a plurality of support beams 111, 121, 131, 141, 151, 152, and the like. It is composed of a plurality of diagonal beams 112, 122, 132, 142, 152 installed between the support beams to more firmly support the installation state of the support beams.

Hereinafter, the configuration of each of the walls will be described in more detail.

Pylon test structure for aircraft according to the present invention is installed in the test device and the pylon built into the respective walls constituting the main body 100 is a test for the pylon.

In describing each of the walls, first, the bottom wall 110 includes a plurality of floor beams 111 installed to cross each other. The floor beam 111 is installed in parallel in one direction and two types installed in the vertical direction to cross the installation is to implement a grating form as a whole.

In addition, two bottom wall side diagonal beams 112 are installed on the bottom beams 111 so as to cross in an oblique direction. The bottom wall side diagonal beam 112 has an end portion of which extends from the edge of the entire structure so that the other end portion of the bottom beam 111 is positioned before the last bottom beam 111 of the above-described floor beam 111. It is located at the corner.

Next, as shown in FIG. 2, the upper wall 120 includes a plurality of upper beams 121 spaced apart from each other by a predetermined interval on the upper portion of the bottom wall 110 described above. They are arranged in parallel with each other and those which are installed at both ends and middle portion thereof in the vertical direction.

An upper wall side diagonal beam 122 is provided between the upper beams 121. The upper wall side diagonal beams 122 are provided between two upper beams 121 in diagonal directions opposite to each other, and those installed between the other upper beams 121 located at the side of the installed portion are located at their positions. The positions of the upper wall side diagonal beams 122 provided between the other upper beams 121 are arranged in opposite directions to each other.

Therefore, the external shape when the upper wall side diagonal beams 122 are coupled to each other has a plurality of "X" shapes. The diagonal beam 122 having the "X" shape has a similar shape in the structure of the diagonal beam 112 in the above-described bottom wall 110 and all diagonal beams described below.

Subsequently, the first side wall 130 includes a plurality of first side wall beams 131 vertically interposed between the bottom wall 110 and the upper wall 120 and arranged in parallel with each other, and each of the first side walls 130. Two opposing beams 131 are provided with a plurality of first side wall side diagonal beams 132 installed in diagonal directions.

In addition, the second side wall 140 is located on the side of the first side wall 130 described above and has the same structure as the first side wall 130, the configuration of the bottom wall 110 and the upper wall 120 A plurality of second side wall beams 141 vertically interposed therebetween and arranged in parallel with each other, and a plurality of second side walls provided in a diagonal direction between two second side wall beams 141 facing each other; The side wall-side diagonal beam 142 is provided.

In addition, the third side wall 150 forms a wall between the first side wall 130 and the second side wall 140, and the plurality of third side wall beams interposed between the bottom wall 110 and the upper wall 120. 151 and a fourth side wall beam 152 supporting laterally between the third side wall beams 151. Further, a plurality of third side wall side diagonal beams 153 are provided that intersect the three side wall beams 151 in a diagonal direction.                     

Finally, one side between the first side wall 130 and the second side wall 140 is provided with an opening 160 which is opened outwardly, and on both sides of the opening 160, an oblique line extending diagonally from the upper edge portion. The beam 161 is provided.

A plurality of exterior plates 170 are coupled to the outer side of the first side wall 130, the second side wall 140, and the third side wall 150, and the inner side of the bottom wall 110. Is a plurality of bottom plate 180 is coupled.

On the other hand, the bottom plate 180 of the bottom wall 110 is provided with a bottom moving device 200 to move the test object to the front and rear, left and right to support the bottom of the test object. The floor moving device 200 is composed of a guide 210 and a support bracket 220 installed on the guide 210.

In addition, a support rod 230 is installed on the inner upper portion of the first side wall 130 and the second wall 140 to support and support the test object on the upper portion of the bottom wall 110. In the lower portion is installed up and down moving device 240 for moving the test object up and down, these components can be installed by replacing the other test equipment during the vibration test and static test.

Hereinafter will be described the state of use for the aircraft pylon test structure according to the present invention configured as described above.

The pylon test structure of the aircraft according to the present invention is implemented differently in the configuration of the test devices set therein during the stiffness test, vibration test, static load strength test.                     

For example, as shown in FIG. 5, in the vibration test, a pylon for a test is mounted to the lower side of the upper wall 120 among the interior of the structure main body 100, and in a state in which various structures are mounted on the pylon. Install a test device to perform the vibration test.

In the static test, although not shown separately in the drawing in the state as shown in FIG. 1, various hydraulic actuators and links supporting the pylon are installed in the bottom conveying device 200 and the vertical moving device 240, and Stiffness and static load strength tests will be performed.

On the other hand, the stiffness test of the aircraft's pylon is to confirm the stiffness of each pylon for the aircraft's plotter analysis. This is to check the vibration characteristics when each arm is installed in the wing tip launcher.

Among these tests, the stiffness test and the static load strength test require a space for installing a load acting system (hydraulic actuator), and the aircraft pylon test structure of the present invention can be secured in a sufficient space therein. And for the vibration test, the structure must withstand the natural frequency of 40-50MHz, the aircraft pylon test structure of the present invention has an efficient diagonal structure to withstand such natural frequency.

As described above, the aircraft pylon test structure according to the present invention allows the vibration test and the static test of the pylon to be performed in one test structure as in the claims of the present invention, and another modified embodiment of the present invention. Unlike in the embodiment of the present invention, even if a part of the configuration is applied by modifying it should be regarded that all included in the technical scope of the present invention if it includes the components in the claims of the present invention.

As described above, the pilot test structure for aircraft according to the present invention enables vibration test and static test of the pylon with one structure, which enables efficient space utilization for testing as compared to the conventional test method, and also manufactures the structure. The cost is reduced and the work time for testing can be shortened.

Claims (8)

A hexagonal body having a bottom wall, an upper wall, a first side wall, a second side wall, and a third side wall, the opening being formed between the first side wall and the second side wall; A plurality of support beams installed to form respective surfaces except for the openings; A plurality of diagonal beams installed between the support beams to support a combined state of the support beams; A plurality of exterior plates provided outside the upper wall, the first side wall, the second side wall and the third side wall; It includes a plurality of bottom plates installed inside the bottom wall, The bottom plate of the bottom wall is made of a guide and a support bracket installed on the guide, the bottom moving device for moving the test object in front and rear, left and right to support the bottom of the test object is further installed, Support rods are further installed on the inner upper portions of the first side wall and the second side wall to support and support the test object on an upper portion of the bottom wall. An aircraft pylon test structure, characterized in that the lower portion of the support rod is further provided with a vertical movement device for moving the test object up and down. The method of claim 1, wherein the support beam includes a plurality of floor beams are formed to form the bottom wall and cross each other, the diagonal beam is a plurality of floor wall side diagonal beams installed in a diagonal direction with respect to the floor beams. An aircraft pylon test structure comprising a. The method of claim 1, wherein the support beam includes a plurality of upper beams forming the upper wall and positioned on the bottom wall to cross each other, the diagonal beam is installed in a diagonal direction with respect to the upper beams An aircraft pylon test structure comprising a plurality of top wall side diagonal beams. 2. The support beam of claim 1, wherein the support beam forms the first side wall and comprises a plurality of first side wall beams interposed between the bottom wall and the top wall, wherein the diagonal beam is interposed between the first side wall beams. An aircraft pylon test structure comprising a plurality of first sidewall side diagonal beams installed in diagonal directions. The diagonal beam of claim 1, wherein the support beam includes a plurality of second side wall beams formed between the bottom wall and the upper wall, forming a second side wall positioned on a side surface of the first side wall. And a beam comprising a plurality of second side wall side diagonal beams installed diagonally between the second side wall beams. The plurality of third sidewall beams and the third wall of claim 1, wherein the support beams form a third wall positioned between the first side wall and the second side wall, and are located between the bottom wall and the upper wall. And a fourth sidewall beam supporting laterally between the sidewall beams, wherein the diagonal beam includes a plurality of third sidewall diagonal beams installed diagonally across the third sidewall beams. Pylon test structures for The pilot test structure for aircraft according to claim 1, wherein diagonal beams supported in diagonal directions are installed at both sides of the opening. delete

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