A support device for the strength test of the connection between the vertical tail and the fuselage of the aircraft

Abstract

The invention provides a support device for aircraft tail and fuselage connection strength test, and the support device includes two symmetrical sets of bar systems, each of said groups of bars comprises a front bar, a middle-front bar system, a middle-rear bar system, and a rear bar system, the arrangement of the front bar system, the middle-front bar system, the middle-rear bar system, and the rear bar system of the two sets of bar systems correspond to the position of the joint of the aircraft's vertical tail and is set vertically. The front bar system comprises a joint fixedly, a front barvertical bar and a front bar connecting seat that are fixedly connected from the top to the bottom; the middle-front bar system and the middle-rear bar system have the same structure, each comprisinga joint fixedly connected from the top to the bottom, a vertical bar and a connecting seat; and the rear bar system comprises a joint fixedly connected from the top to the bottom, a rear bar verticalbar and a rear bar connecting seat. The invention simulates the connection constraint condition of the aircraft vertical tail and the fuselage, tests the ultimate bearing capacity and the failure mode of the connection joint, verifies whether the connection form design of the vertical tail and the fuselage is reasonable, provides the test basis for the structural strength analysis and calculation, thereby reducing the risk of the full-scale test.

Description

technical field [0001] The invention belongs to the field of test devices for the connection strength between the vertical tail and the fuselage of an aircraft, and in particular relates to a support device for testing the connection strength between the vertical tail and the fuselage of an aircraft. Background technique [0002] The vertical tail and the fuselage of the aircraft are connected by 4 pairs of titanium alloy joints in the form of pull bolts to transmit the lateral bending moment of the vertical tail; a ring of shear bolts at the bottom is connected to the fuselage skin to transmit the vertical tail torque. However, the test device that simulates the connection between the box section of the vertical tail of the aircraft and the fuselage, and evaluates the bearing capacity and failure mode of the connection joint between the box section of the vertical tail and the fuselage is a blank at home and abroad. The size of the test piece in the tail box section is near...

AI Technical Summary

Problems solved by technology

However, the test device for simulating the connection between the box section of the vertical tail and the fuselage by testing and assessing the load-bearing capacity and failure mode of the joint between the box section of the vertical tail and the fuselage is a blank at home and abroad. The size of the tail box section test piece is nearly 2000mm×1500mm. The constraints of the support end connecting the vertical tail and the fuselage have a great influence on the mechanical performance of the vertical tail, and the cost of using the fuselage as a support frame is too high and difficult to realize.

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