Variable-throat adjustment is the most practical flow regulation method of solid ducted rocket ramjet (SDR). The high-fidelity mathematical model of the interstage valve is the basis for realizing high-precision gas flow and thrust regulation. In this paper, the complex effect of gas was divided into load and throat deformation effect. The load was mainly determined by the clearance, friction torque, and pneumatic torque that the valve was subjected to during operation. And the throat deformation was determined primarily by the deposition and ablation of the valve faced in the gas. Therefore, we could divide the valve model into three parts: the servo motor model, the load characteristic model, and the deformation model of the actual acting throat (referred to as the throat). Given, we have designed a cold-air experiment program, using cold air to equalize the valve load. Furthermore, we analyzed its mechanism of action and established the load model using the experimental data and neural network. Finally, the deformation mechanism of the throat was investigated, and simultaneously, the deformation model was shown based on the flight test data. Compared with the traditional interstage valve model, the model established in this paper is closer to the actual working conditions, which is helpful to carry out the more comprehensive and practical ground simulation. It has essential reference value for further realizing the precise regulation of gas flow.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Hybrid Modeling Method of SDR Interstage Valve Based on Mechanism and Data-Driven


    Beteiligte:
    Hongfu Wang (Autor:in) / Qinghua Zeng (Autor:in) / Xianhe Chen (Autor:in) / Zongyu Zhang (Autor:in) / Weide Liu (Autor:in)


    Erscheinungsdatum :

    2022




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Unbekannt




    Ram Accelerator Interstage Diaphragm Replacement Valve

    Fallot, Connor / Knowlen, Carl | AIAA | 2024


    Aircraft interstage separation device

    LI ZHIMING / LI JIANHUI / LUAN JIAFU et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    Interstage separation mechanism and method beneficial to aircraft attitude stability

    XU EYAN / SHEN YIZHE / ZHAO WENWEN et al. | Europäisches Patentamt | 2024

    Freier Zugriff

    The Turbine Interstage Diffuser

    Amann, Charles A. / Razinsky, Elias H. / Nordenson, Gary E. | SAE Technical Papers | 1971


    Interstage separation device of aircraft

    WU YI / XIAO RENQIN / WU JINGFENG et al. | Europäisches Patentamt | 2023

    Freier Zugriff