Wind tunnel test stand with unilateral aerodynamic force

Abstract

The invention provides a wind tunnel test stand with a unilateral aerodynamic force. A handle is rocked to provide power; the handle is rocked, a middle gear drives a left gear and the right identical gear to rotate in the same direction, and rotation of the left gear and the right gear drives a first screw rod and a second screw rod to move forwardly; a rear flow guide clamping plate moves along a linear guide rail under pulling force effects of the first screw rod and the second screw rod; drawing of a thin plate is driven through the pulling force of the first screw rod and the second screw rod and the traction force of the linear guide rail; the rotation angles of the first screw rod and the second screw rod can be measured by a rotation disc; and the drawing distance of the thin plate can be obtained according to pitches of the first screw rod and the second screw rod. The wind tunnel test stand with the unilateral aerodynamic force has the advantages that reverse engagement of the gears controls movement of the first screw rod and the second screw rod to achieve high precision and high reliability, movement of the first screw rod and the second screw rod can be controlled only by rotating the handle, the operation is extremely simple, the overall structure is simple, the weight is light and the like.

Description

[0001] Technical field: [0002] The invention relates to a unilateral aerodynamic wind tunnel test frame, which belongs to the field of aerospace. [0003] Background technique: [0004] At present, aerodynamic experiments are divided into two categories: physical experiments and model experiments. When conducting model experiments, the similarity between the model flow field and the real flow field should be ensured, that is, in addition to ensuring the geometric similarity between the model and the real object, the similarity criteria related to the two flow fields, such as Reynolds number, Mach number, general The Randt numbers and so on are correspondingly equal. Therefore, there must be certain requirements for the experimental frame with unilateral aerodynamic force. The airflow cannot flow on the two surfaces of the aircraft skin, but can only be limited to one surface. The low-speed flow simulates the supersonic condition, and the strength of the thin plate must be i...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a wind tunnel test frame for unilateral aerodynamic force, which is used to solve the shortcomings of testing bilateral aerodynamic force, thin plates are prone to flutter, and the stiffness is small.

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