Theoretical investigation on water/metal fuel ramjet motor-thermodynamic cycle and thermodynamic calculation

作     者：YANG Ya-jing HE Mao-gang 

作者机构：School of AerospaceXi'an Jiaotong UniversityXi'an 710049China State Key Laboratory of Multiphase Flow in Power EngineeringSchool of Energy and Power EngineeringXi'an Jiaotong UniversityXi'an 710049China 

出 版 物：《航空动力学报》 (Journal of Aerospace Power)

年 卷 期：2010年第25卷第5期

页      面：1129-1138页

核心收录：

学科分类：082502[工学-航空宇航推进理论与工程] 08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：Supported by National Natural Science Foundation of China (No .50776070) New Teacher Research Support Program of Xi an Jiaotong University (No .0106-08142002) 

主　　题：hydroreactive metal fuel water ramjet thermodynamic cycle thermal efficiency specific impulse 

摘      要：For achieving high-speed requirement of underwater vehicle,a conceptual engine,which utilizes the hydroreactive characteristic of several metals under supercavitation environment,has been put forward. Especially,in order to obtain specific impulse as great as possible,a dual water injection system is taken into account. Then thermodynamic cycle model,which lead the improvement of power plant and energy system,is introduced in detail,and thermal efficiency is also analyzed. Furthermore,for investigating the performance of this kind of engine system,detailed thermodynamic calculation and analysis are achieved. Especially,regarding hydroreactive metal fuel Mg/AP/HTPB as our target fuel-rich propellant,considering its obvious deficient oxygen property and the energy property of magnesium/water reaction,theoretical calculation method is established by integrating chemical non-equilibrium with chemical equilibrium. Accordingly,low limit of primary water/fuel ratio is determined. In addition,the qualitative and quantitative relationship of performance parameters,such as theoretical specific impulse,nozzle exit temperature,characteristic velocity,etc.,versus water/fuel ratio is investigated respectively.