摘要
为了研究航母蒸汽弹射系统的动力学和热力过程特性,通过建立蒸汽弹射器热力学模型、牵引释放装置数学模型和质量车蒸汽弹射系统动力学模型,建立了包括施加预紧力阶段、弹射力加载阶段和弹射滑跑阶段的全过程质量车蒸汽弹射仿真模型。针对储汽筒压力、气缸压力和质量车加速度3个蒸汽弹射系统关键参数,进行了理论分析与仿真验证,并与实验数据进行了对比,验证了本文建模方法的正确性。利用所建模型,对蒸汽弹射系统的其他关键参数进行研究。仿真结果表明:在蒸汽弹射系统的3个阻力当中,质量车摩擦力影响最大,空气阻力影响最小;弹射力与冲程的曲线可以看成前一段斜率为正,后一段斜率为负的分段函数;弹射杆轴向力的峰值大于弹射力的峰值。研究结果能够为蒸汽弹射系统的设计和试验提供一定的理论参考。
To study the dynamics and thermodynamic process feature of the steam catapult system of aircraft carrier,simulation models were developed for the whole catapult process,which comprised tensioning,and catapult force built up with holdback and power stroke.This simulation was realized by setting up a thermodynamics model for steam catapult,mathematical model for traction release device,and kinetics model for deadload steam catapult system.According to three main parameters of accumulator pressure,cylinder pressure,and deadload acceleration,theoretical analysis and simulation were conducted,and then the correctness of the proposed models was validated by comparison with experimental data.The other main parameters for steam catapult system were studied using the model setup.From the simulation results,three important conclusions were obtained:Among the three kinds of resistances of the steam catapult system,the friction force of the deadload has the greatest influence,and air drag has the least influence.The curve of catapult force against the catapult stroke can be regarded as a piecewise function,whereby the slopes of the initial and latter segments are positive and negative,respectively.The peak value of the axial load of launch bar is greater than that of the catapult force.The study result can give a theory reference to design and test of steam catapult launch system.
作者
朱齐丹
鲁鹏
杨智博
ZHU Qidan;LU Peng;YANG Zhibo(College of Automation,Harbin Engineering University,Harbin 150001,China)
出处
《哈尔滨工程大学学报》
EI
CAS
CSCD
北大核心
2018年第12期1979-1986,共8页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(61603110)
中央高校基本科研业务专项资金项目(HEUCFM170401)
关键词
质量车
蒸汽弹射系统
弹射起飞
弹射全过程建模
弹射全过程仿真
弹射全过程分析
deadload
steam catapult system
catapult launch
whole process modeling of catapult
simulation of catapult whole process
whole process analysis of catapult
