A fixed transition zone in a low-speed wind tunnel and its manufacturing method

Abstract

The invention discloses a low-speed wind tunnel fixing transition strap and a manufacturing method of the low-speed wind tunnel fixing transition strap. The transition strap comprises adhesive tape, a plurality of columnar points and a paper bag, wherein the adhesive tape and the paper bag adhere to each other, and the columnar points are arranged between the adhesive tape and the paper bag; a hole puncher is adopted for punching holes in PVC material so that the columnar points can be formed and arranged on the paper bag, the adhering strengths on the two sides of each columnar point are different, and therefore transfer printing of the columnar points can be guaranteed. Compared with a common columnar transition strap, the low-speed wind tunnel fixing transition strap is simple in structure and easy to manufacture, and characteristic parameters, the thickness and the interval of the transition strap are determined. When the low-speed wind tunnel fixing transition straps are installed in different positions of an airplane model, adhering operation is easy and convenient, time is short, efficiency is high, the low-speed wind tunnel fixing transition straps can be used once adhering to the airplane model and can adhere to articles easily, the adhering performance is good, and the manufacturing cost is low.

Description

technical field [0001] The invention belongs to the field of low-speed wind tunnel fixed transition tests for aerospace and aviation vehicles, in particular to a low-speed wind tunnel fixed transition zone. Background technique [0002] When a real aircraft is flying in the air, due to the high flying Reynolds number, the boundary layer on the surface of each part of the aircraft is almost all in a turbulent state. In the wind tunnel test, due to the relatively low test Reynolds number, there is a rather long section of laminar boundary layer on the surface of the model, which causes a large difference between the state of the boundary layer on the model surface and the real aircraft. This difference complicates and irregularizes the influence of Reynolds number in wind tunnel tests. If the method of artificially fixing the transition of the boundary layer is adopted during the model test, so that the boundary layer on the surface of the model is similar to that of an airpl...

AI Technical Summary

Problems solved by technology

[0005] The production of emery transition belt is pasted by artificial air blowing. The production of this transition belt is greatly influenced by human factors. Different people have different blowing methods and sizes, and the quality of the emery transition belt produced is the same. Thickness positioning accuracy is not high

The zigzag transition zone is often used in fighter jet test models, the selection range of this transition zone is small, and its additional resistance in the wind tunnel cannot be deducted

Images