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Static test loading method for long straight wings of small unmanned air vehicle

A small aircraft and wing technology, which is applied in the testing of mechanical components, testing of machine/structural components, measuring devices, etc., can solve problems such as static tests that are difficult to load effectively, changeable, and the structure and shape of small UAVs are complex. , to achieve fast installation and loading, strong practicability, and reliable positioning

Active Publication Date: 2016-03-30
BEIHANG UNIV
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Problems solved by technology

[0007] In view of the above needs, the inventors have provided a static test loading method suitable for small unmanned aerial vehicles with long straight wings and solution, easy to use, low cost, does not affect the body structure, and has a certain degree of versatility

Method used

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  • Static test loading method for long straight wings of small unmanned air vehicle
  • Static test loading method for long straight wings of small unmanned air vehicle
  • Static test loading method for long straight wings of small unmanned air vehicle

Examples

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example

[0030] Example: The test object is a small long straight wing UAV with a wingspan of about 1.7 meters. The weight of the aircraft is about 20kg. During the test, it can be loaded step by step with a load increment of 20%; the maximum load in the test can reach 44kg, the mounting method is still valid, and no mounting point moves or falls off; static test results (strain changes with load increments) It shows that the loading scheme has good linearity (such as Figure 8 shown), meeting the basic requirements of aircraft static testing. The total production cost of the static test loading device in this example is only more than 600 yuan, but usually the outsourcing cost of this kind of static test is as high as tens of thousands or even hundreds of thousands of yuan, and a fixed test site and special supporting facilities are required And test prototypes, the cost is high.

[0031] Figure 5 - Figure 7 is a picture showing the scene of the test instance, Figure 8 is the ...

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Abstract

A static test loading method for long straight wings of a small unmanned air vehicle is characterized in that: a loading device includes wing chordwise tie belts (2), wing spanwise tie belts (4) which can constraint spanwise movement of the wing chordwise tie belts (2), wing loading point hanging rings (8) which are located on the wing chordwise tie belts (2), a locking device (3) which is located between a left wing and a right wing and under the wings and connects the spanwise tie belts (4) of the left wing and the right wing, and loading sandbags (7). According to the method, a tie belt frame design can be adopted, and a plurality of chordwise high-strength tie belts and spanwise high-strength tie belts constrained on a surface of the wings can form an outer load transmission frame, so that the weight of the loading sandbags can be converted into the load of the wings of the air vehicle, and the method can be used for static test loading of a structure. The loading method and device are easy to use, are reliable in loading, are low in cost, are good in adaptability, and can be used for static tests of various medium-sized unmanned air vehicles and various small unmanned air vehicles.

Description

technical field [0001] The invention relates to a static test loading method for a long straight wing of a small unmanned aerial vehicle, belongs to the field of static strength tests of aviation aircraft structures, and is suitable for loading the static strength test of a wing of a small unmanned aerial vehicle with a large aspect ratio. Background technique [0002] UAV is an important means of battlefield reconnaissance in modern warfare. Due to its small size, good visual stealth effect, low manufacturing cost, flexible and convenient transportation, and high battlefield mobility, small UAVs are ideal for front-line spying and reconnaissance of the enemy, information relay, auxiliary communication and other tactics in modern warfare. An important weapon for the mission. This type of UAV usually has a long straight wing structure with a large aspect ratio, carries the necessary communication and reconnaissance equipment loads, and has a certain ability to stay in the ai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 宋晨向锦武郭伟杨炯马铁林齐电海
Owner BEIHANG UNIV
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