一种航空发动机空气系统引气管与孔板匹配设计方法
By establishing the correspondence between pressure ratio and converted flow rate and conducting orifice plate flow characteristic tests, the problem of inaccurate pressure distribution in the matching design of air intake pipe and orifice plate was solved, realizing efficient and accurate design of aero-engine air system and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- AECC SHENYANG ENGINE RES INST
- Filing Date
- 2023-09-25
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the matching design of the air duct and orifice plate of the air system of aero-engine lacks a clear technical route, which leads to the reliance on experience for pressure distribution, which may result in design results that do not meet requirements and increase costs.
By obtaining the flow characteristic test results of existing air intake pipes, the correspondence between pressure ratio and converted flow rate is established. Flow characteristic tests of orifice plates under different orifice diameters are conducted to obtain the fitting relationship. Combined with input parameters and deviation allowance pressure ratio, the pressure ratio and size of air intake pipes and orifice plates are determined to ensure that the design results meet the requirements.
This significantly improved the accuracy of pressure distribution between the air intake tube and the orifice plate, reduced design costs and repetitive work, and ensured the accuracy and efficiency of the design results.
Smart Images
Figure CN117287303B_ABST