Multifunctional box type detachable rotational flow distortion generator

Abstract

The invention belongs to the field of aviation engines, and discloses a multifunctional box type detachable rotational flow distortion generator. The multifunctional box type detachable rotational flow distortion generator is composed of box body circular flow guiding plates (3), box body circular connecting plates (4), a distortion generator front box body (5), a distortion generator rear box body (6) and a flow guiding basin (7), wherein a plurality of the box body circular connecting plates (4) form a bilaterally symmetrical flow guiding assembly with a certain opening angle reserved at theupper and lower ends. The novel multifunctional box type detachable rotational flow distortion generator is suitable for simulating various rotational flow distortion forms, can realize rotational flow distortion with single vortex intensity of 40 degrees, pair vortex intensity of 20 degrees and multi-vortex intensity of 10 degrees through adjusting the different connecting plates, and can meet the requirement for simulating rotational flow distortion at an outlet of a common air inlet pipe. The connecting plates of the flow guiding assembly are detachably connected by means of bolts, and thestructural design realizes limited disassembly and assembly during the assembly and testing process of parts.

Description

Technical field [0001] The invention belongs to the field of aero-engines, and can be used for the evaluation of the compatibility of the aero-engine in the development process of the aero-engine, and can simulate various swirling forms such as single vortex, double vortex, multi-vortex, etc., and swirl distortion of different swirling intensity at the outlet of the inlet . Background technique [0002] With the design of modern military aircraft gradually taking stealth performance as an outstanding evaluation index, a large number of intake devices such as S-curved inlets, buried inlets and serpentine inlets have been adopted. For the advanced inlet structure, the total pressure distortion at the outlet will also produce swirl distortion. With the increase in the complexity of the inlet port profile, the swirl distortion form has developed from simple single vortex and double vortex to multi-vortex. The complex structure of the department. Swirl distortion will affect the sta...

AI Technical Summary

Problems solved by technology

However, when using this kind of distortion generating device, it is necessary to install the blade angle of attack rotating device on the engine intake flow tube, and because the parameters such as the number of blades installed and the height of blades cannot be changed, the intensity of swirl distortion can only be obtained by changing the angle of attack. To achieve, it is helpless for more complex multi-vortex swirl distortion

In addition, in terms of processing, the processing cost of the blade is relatively high, and the installation and calibration during the test is also time-consuming and laborious

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