一种喷管试验器空气系统自动调节方法

By using an automatic adjustment method and real-time correction of mathematical models, total pressure recovery coefficient, and flow correction coefficient, the problem of low efficiency of manual adjustment of the air system of the nozzle tester is solved, realizing automated and efficient air system adjustment, and avoiding mutual coupling and interference between internal, external, and venting.

CN121298258BActive Publication Date: 2026-07-17AECC SHENYANG ENGINE RES INST

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
AECC SHENYANG ENGINE RES INST
Filing Date
2025-11-12
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The air system adjustment of the nozzle tester is done manually, which has a low degree of automation, long test state adjustment time, low test efficiency, and high technical requirements for operators.

Method used

An automatic adjustment method is adopted, and the output parameters are calculated by input parameters and mathematical model. The control system directly uses the opening value of the regulating valve as the target parameter for automatic adjustment, simplifies the air system pipeline structure, and introduces total pressure recovery coefficient and flow correction coefficient for real-time correction.

Benefits of technology

Automatic adjustment of the air system was achieved, reducing adjustment time, saving test costs, and avoiding the problems of coupling and interference between the internal, external, and venting systems.

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Abstract

本申请属于航空发动机技术领域,特别涉及一种喷管试验器空气系统自动调节方法,包括以下步骤:对所述空气管道进行简化,其中内涵管道、外涵管道和放气管道各仅保留一个调节阀和一个流量测量孔板,其余元件简化为阻力元件;建立空气管道的数学模型,所述数学模型包括未知状态参数计算数学模型、修正系数计算数学模型、气源压力计算数学模型和调节阀开度计算数学模型;通过所述数学模型计算达到试验状态时各调节阀的开度目标值;将所述开度目标值提供给控制系统,直接调节各调节阀的开度,实现空气系统的自动调节。
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