以高壓氣體驅動液體排放特性之研究

Abstract

本研究旨在發展以高壓氣體驅動液體排放系統之研究，包含衛星發射載具使用之二次噴射推力向量控制系統以及高壓氣體應用於水下載具壓載水櫃排洩系統，分別進行動態建模及模擬分析。 本文發展之二次噴射推力向量控制系統應用，基於高壓氣瓶的排放，經調壓閥控制氣體壓力輸出，並且設計氣體排放達到滿足壅塞流(Choked flow)之條件進行高壓氣瓶的設計，以達到目標所需的橫推力，本文進行其組件動態建模及模擬計算分析。 高壓氣體應用於水下載具壓載水櫃排洩系統，亦基於高壓氣瓶排放致使壓載水櫃中的海水排出水櫃，假定氣瓶內的氣體為滯止狀態並且進行管路的連接，計算其氣體排放之狀態計算，並連接到壓載水櫃計算其排水特性，由其排水特性計算各水櫃之重心改變，並且可計算其姿態的運動狀態。 本文研究高壓氣體驅動液體排放之特性，均使用Matlab/Simulink分別完成二次噴射推力向量控制系統以及高壓氣體應用於壓載水櫃排洩之系統，依照目標所需設計之組件參數進行系統動態建模以及模擬分析。

This study aims to develop high-pressure air driving liquid emissions systems, including the secondary injection thrust vector control system of satellite launch vehicles and the blowing system of the underwater vehicle ballast tanks. The application of the secondary injection thrust vector control system developed in this paper is based on the discharge of the high pressure gas vessel, the gas pressure output is controlled by the pressure reducing valve, and the design of the gas discharge reaches the condition of the choked flow to design the high pressure gas vessel for achieving the required target lateral thrust. In the blowing system of the underwater vehicle ballast tanks, the pressure reducing valve in this paper is a normally open spring regulating valve, and calculates the physical model of the components; the system application of the ballast tanks also drains out of the seawater by high pressure vessel. Assume that the gas in the vessel is in a stagnation state and the pipeline is connected to the vessel for discussing the dynamic equation of gas emissions. The center of gravity change of each tank can be calculated from its drainage characteristics, and the motion state of its posture can be calculated. In this paper, the dynamic modeling and the dynamic simulation by Matlab/Simulink for the secondary injection thrust vector control system of satellite launch vehicles and the blowing system of the underwater vehicle ballast tanks were developed and verified respectively.