机械科普
【学士论文】舰载飞机模型研究-1摘要
时间: 2018-11-28 22:55 浏览次数:
舰载飞机模型研究及其着舰环境仿真。该文章为哈工大学士学位论文,在此感谢YCY同学,祝YCY将来工作能一帆风顺,成为机械业内知名设计师。焊接自动化设备好用吗?
摘  要

 
   航空母舰/舰载飞机系统是当代军事的重要力量,是现代海军必备的武器,也是彰显国家综合国力的象征,故此各国研究航空母舰/舰载飞机系统的步伐从未停止过。航空母舰与舰载飞机相辅相成,只有合为一体才能发挥其最强实力,航母是舰载机起降的海上运动平台,是一种以舰载飞机为主要作战武器的大型水面军舰,航母的舰体拥有供舰载飞机起降的超大甲板,其运动也是影响舰载飞机安全、准确着舰的关键因素。


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   舰载飞机与陆基飞机不同,它的使用环境比较恶劣。安全、准确着舰成为了使用舰载飞机的重要问题。航空母舰在海上的运动、海上的环境以及紊流扰动都影响着着舰的安全性,航空母舰甲板的有限长度和宽度也使得舰载飞机的着舰难度比陆基飞机大得多。本文首先利用动力学等学科的基本知识,得到了舰载飞机在坐标系中各变量之间的约束关系,建立了舰载飞机纵向运动方程模型,给出了舰载飞机着陆的小扰动方程,并且讨论了舰载飞机在自然状态下的动态响应特性,在Matlab/Simulink环境下,舰载飞机的各个输出分别对应的油门杆和升降舵输入的传递函数及其仿真。(焊接自动化设备好用吗?
本文也研究了航母运动对舰载飞机着舰的影响,根据航空母舰的海上运动特性,定义航空母舰的自由度,分析各自由度的影响,主要研究纵摇和垂荡运动对舰载飞机着舰的影响,利用航母的功率谱模型对平稳随机过程进行建模,并对航母运动进行仿真,分析了舰尾流的特点和形成原因。采用工程方法对航母尾流进行了仿真分析。仿真结果表明,由航母运动诱导出的舰尾流周期性分量量级较大,特别是越接近着舰的最后阶段,舰尾流周期性分量对舰载飞机着舰影响就越大。
 
 舰载飞机

关键词 舰载飞机;航母运动;纵向控制律;舰尾流;仿真

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Research on shipboard aircraft model and simulation of ship landing environment
Abstract
Aircraft carrier / carrier aircraft system is an important force of modern military, a necessary weapon of modern navy, and also a symbol of national comprehensive national strength. Therefore, the pace of research on aircraft carrier / carrier aircraft system in various countries has never stopped. Aircraft carriers and shipborne aircraft complement each other, and only when they are combined can they exert their strongest strength. Aircraft carriers are a platform for naval aircraft to take off and land at sea, and a large surface warship with shipborne aircraft as its main combat weapon. The ship body of an aircraft carrier has an oversized deck for the take-off and landing of a shipborne aircraft, and its movement is also a key factor affecting the safety and accurate landing of a shipborne aircraft.
Shipboard aircraft and land-based aircraft, its use environment is relatively bad. Safety and accurate landing has become an important issue in the use of shipboard aircraft. The movement of aircraft carrier at sea, the environment of sea and turbulence disturbance all affect the safety of landing ship. The limited length and width of the deck of aircraft carrier also make the landing difficulty of carrier aircraft much more difficult than that of land-based aircraft. In this paper, first of all, by using the basic knowledge of dynamics and other disciplines, the constraint relations among the variables of shipborne aircraft in the coordinate system are obtained, the longitudinal motion equation model of shipborne aircraft is established, and the small disturbance equation of shipborne aircraft landing is given. The natural state of the shipborne aircraft is also discussed. In the Matlab / Simulink environment, the transfer function of the throttle and elevator input corresponding to each output of the aircraft and its simulation are obtained under the environment of Matlab / Simulink.


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This paper also studies the influence of carrier movement on the landing of carrier aircraft, defines the degree of freedom of aircraft carrier and analyzes the influence of each degree of freedom according to the characteristics of aircraft carrier motion at sea. The influence of pitching and swinging motion on the landing of shipborne aircraft was studied. The stationary stochastic process was modeled by using the power spectrum model of the aircraft carrier, and the simulation of the aircraft carrier movement was carried out, and the characteristics and causes of the ship tail current were analyzed. The engineering method is used to simulate and analyze the wake of aircraft carrier. The simulation results show that the magnitude of the periodic component of the ship tail current induced by the aircraft carrier motion is larger, especially the closer to the final phase of the ship landing, the periodic component of the ship tail current to the shipborne flight. The greater the impact of aircraft landing.
 
  
Keywords Shipborne aircraft; Carrier Motion; Longitudinal Control Law; Tailstream; Simulation


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摘要........................................................................................... I
Abstract....................................................................................... II
舰载飞机模型研究及其着舰环境仿真............................................................... I
摘  要........................................................................................ I
Research on shipboard aircraft model and simulation of ship landing environment ............... II
Abstract....................................................................................... II
目  录........................................................................................ IV
第1章 绪论..................................................................................... 6
1.1 课题背景................................................................................... 6
1.1.1 研究意义................................................................................. 8
1.1.2 国内外研究现状分析....................................................................... 9
1.1.3 论文研究的主要内容....................................................................... 11
第2章 舰载飞机建模............................................................................. 12
2.1 舰载飞机运动模型........................................................................... 12
2.1.1 舰载机的纵向动力学分析................................................................... 12
2.1.2 舰载机的模态响应......................................................................... 15
2.2 舰载机动态响应............................................................................. 17
2.2.1 升降舵传递函数........................................................................... 17
2.2.2 升降舵阶跃输入的系统响应................................................................. 19
2.2.3 对单位油门杆阶跃输入的响应............................................................... 22
2.2.4 舰载飞机发动机响应特性................................................................... 25
2.3 本章主要研究内容........................................................................... 26
第3章 航母海上运动特性......................................................................... 27
3.1 航母海上运动............................................................................... 27
3.1.1 航母海上运动的影响....................................................................... 27
3.1.2航空母舰运动定义.......................................................................... 30
3.2 航母运动模型建立........................................................................... 31
3.2.1 航母运动的随机模型....................................................................... 31
3.2.2 航母运动的确定性模型..................................................................... 33
3.3 本章小节................................................................................... 35
第4章 航母尾舰流仿真建模....................................................................... 36
4.1 舰尾流特点和模型........................................................................... 36
4.1.1 舰尾流概述............................................................................... 36
4.1.2 工程化方法基础........................................................................... 36
4.2 舰尾流的建模与仿真......................................................................... 37
4.2.1 海面自由大气紊流模型..................................................................... 37
4.2.2稳态航母尾流扰动.......................................................................... 39
4.2.3舰尾流周期性分量.......................................................................... 40
4.3 本章小结................................................................................... 41


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