Aerodynamic lift resistance test device with controllable and adjustable pitch angle of airplane model

Abstract

The invention belongs to the technical field of hydrodynamic test simulation systems. The invention discloses an aerodynamic lift resistance testing device with a controllable and adjustable pitch angle of an airplane model. The device comprises: a trailer lift axle 1, a first monitorable locking structure 2, a front main dragging rod 3, an electric lifter 4, a rope 5, a multi-degree-of-freedom adjusting reinforcing rod 6, an axle locking structure 7, a vertical linear displacement sensor 8, a pitching posture quantitative adjusting structure 9, a test model 10, a gyroscope 11, a qualitative steel plate 12, a horizontal line displacement sensor 13 and a rigid rod structure 14. Inertia and centroid debugging accuracy of a hydrodynamic test model can be improved, and model test accuracy is improved.

Description

technical field [0001] The invention belongs to the technical field of hydrodynamic test simulation systems, in particular to an aerodynamic lift-drag test device with controllable adjustment of the pitch angle of an aircraft model. Background technique [0002] Aerodynamic lift-drag test technology of aircraft model is an important technology in the field of experimental simulation system technology. The aerodynamic lift-drag test involves ground-effect aircraft, fixed-wing aircraft, rotor helicopters, and aerostats. [0003] In the development process of aerial vehicles, it is necessary to simulate the lift and drag of the aircraft through the aerodynamic lift-drag test to determine the performance parameters of the aircraft, the selection of the power system and the evaluation of safety, which is also an important link in the process of airworthiness certification. [0004] During the aerodynamic lift-drag test, the aircraft model is generally suspended at the bottom of ...

AI Technical Summary

Problems solved by technology

At present, the existing aerodynamic lift-drag test devices have the following deficiencies: (1) the tooling is simple, the adjustment of the test conditions is complicated, and it needs to be disassembled and reinstalled, and the overall rigidity is poor; (2) the locking structure is simple, and the test process is difficult. Safety risk, generally single-point locking is adopted, the stability of the model during the test is poor, and the pitch angle is easy to loosen; (3) There is no monitoring and feedback on the stability of the tooling during the test, and it is not clear how effective the tooling is under the action of a large force , it is easy to bring large errors and safety risks to the test

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