Adjustable stiffness support system for strength test of aircraft vertical stabilizer and fuselage connection

Abstract

The invention provides an adjustable stiffness support system for strength test of connection between vertical stabilizer and fuselage of aircraft, includes two symmetrical sets of bar systems, each set of bar systems includes a front bar system, middle-front bar system, middle and rear bar systems, The front bar system of two sets of bar systems, middle-front bar system, The arrangement of the aft and middle members corresponds to the joint of the vertical stabilizer of the aircraft, A link plate is arrange at that joint of each group of bars and the vertical stabilize surface of the aircraft, bolt holes are arranged on the connecting plate for connected with the joint of the vertical stabilizer surface of the aircraft, and the front bars comprise a first joint, a first variable stiffnessbar, a first vertical fixing lug, a first lateral bar and a second lateral bar. The invention simulates the connection constraint condition between the vertical stabilizer and the fuselage of the aircraft, tests the ultimate bearing capacity and the failure mode of the connection joint, and provides the test basis for the structural strength analysis and calculation, thereby reducing the risk offull-scale test.

Description

technical field [0001] The invention belongs to the technical field of a test device for aircraft vertical tail support in aircraft tests, and in particular relates to an adjustable rigidity support system for the test of the connection strength between an aircraft vertical stabilizer and a fuselage. Background technique [0002] The vertical tail of a civil aircraft is composed of a vertical stabilizer and a rudder. Its function is to maintain the stability of the aircraft heading and realize the yaw of the aircraft through the deflection of the rudder. During flight, the aerodynamic loads, inertial loads and concentrated loads of the rudder suspension generated by the entire vertical tail are finally transmitted to the rear fuselage through the connecting structure at the root of the vertical tail. As the craft separation surface and design separation surface between the fuselage and the vertical tail, the connection between the vertical tail and the rear fuselage is the f...

AI Technical Summary

Problems solved by technology

The test device for assessing the bearing capacity and failure mode of the connecting joint between the vertical stabilizer and the fuselage is a blank at home and abroad. Considering the large size of the test piece of the vertical stabilizer of the aircraft, the constraints of the connecting support end of the vertical stabilizer and the fuselage Conditions have a great influence on the mechanical performance of the vertical tail, but using the fuselage as a support frame is too expensive and difficult to realize

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