Helicopter all-aircraft static test lift system dummy

Abstract

The invention belongs to the field of static strength tests of helicopters, and particularly relates to a helicopter all-aircraft static test lift system dummy. The helicopter full-aircraft static test lifting system dummy comprises a suspension joint, a cross beam tightening nut, a cross beam, a shaft, a shaft side loading joint, an axial loading joint, a load transmission box and a load transmission box tightening nut; the suspension joint is connected with the top of the shaft; the cross beam is connected above the shaft in a sleeving mode and limited by the cross beam tightening nut; the axial loading joint is positioned at the lower end of the shaft; the load transmission box is connected to the middle of the shaft in a sleeving mode and positioned between the cross beam and the axialloading joint; the load transmission box tightening nut is fixed below the load transmission box; and the shaft side loading joint is arranged on the shaft between the cross beam and the load transmission box. According to the helicopter all-aircraft static test lift system dummy, the structure is simple and reliable, the load application of various test working conditions can be met, the rigidities of various real machine lift systems can be matched, the real transmission of the load can be simulated, and the static test precision of the whole machine is effectively improved.

Description

technical field [0001] The invention belongs to the field of static strength tests of helicopters, and in particular relates to a lift system dummy for the whole helicopter static test. Background technique [0002] For the static test of the whole helicopter, the main purpose is to verify whether the helicopter structure meets the static strength design requirements and to verify the bearing capacity of the structure. The test uses a lift system dummy, hangs the testing machine at a single point, and then applies as many as 30 to 40 test loads to various parts of the testing machine. The attitude angle of the testing machine must be within the normal range throughout the test. [0003] In the prior art, the design of the lift system dummy is mainly in the simulation stage, involving algorithm simulation, and the actual specific product has not been seen. Especially in other types of full-machine static dummy tests, the design of the dummy basically only considers the streng...

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Problems solved by technology

[0003] In the existing technology, the design of the lift system dummy is mainly in the simulation stage, involving algorithm simulation, and the actual specific product has not been seen. Especially in other types of full-machine static dummy tests, the design of the dummy basically only considers the strength requirements, and does not Considering the matching of the stiffness of the fake parts, the stiffness of the fake parts is much greater than the real situation when the strength requirements are met, which greatly affects the load transfer effect

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