C301 Supersonic Anti-ship Missile

This article introduces the components, major features and combat effectiveness of China’s C301 anti-ship missile weapon system. With very low altitude and supersonic speed, the C301 missile has very high penetration capability. It is an advanced coast defense weapon system in the 1990s.

Online task planning method of anti-ship missile based on rolling optimization

Based on the wave attack task planning method in static complex environment and the rolling optimization framework, an online task planning method in dynamic complex environment based on rolling optimization is proposed. In the process of online task planning in dynamic complex environment,online task planning is based on event triggering including target information update event, new target addition event, target failure event, weapon failure event, etc., and the methods include defense area reanalysis, parameter space update, and mission re-planning. Simulation is conducted for different events and the result shows that the index value of the attack scenario after re-planning is better than that before re-planning and according to the probability distribution of statistical simulation method, the index value distribution after re-planning is obviously in the region of high index value, and the index value gap before and after re-planning is related to the degree of posture change.

Discussion of the target-missile control scheme with supersonic speed at minimum altitude

An antiship missile with supersonic speed at minimum altitude is an effective weapon to break through a defense line. The former Soviet Union was a leader in this field since it had developed several kinds of antiship missiles which obtained supersonic speed at minimum altitudes. To counter this kind of missile, many countries have been developing corresponding antimissiles. For the purpose of verifing the antimissile missile′s effectiveness in intercepting antiship missiles, a target-missile is needed. A target-missle is cheaper and can imitate the main characteristics of antiship missiles with supersonic speed at minimum altitude. In this paper, the control scheme of a target missile flying with supersonic speed at minimum altitude is studied. To counter the problem of hedgehopping over the sea, a control scheme utilizing a SINS+altimeter was proposed. In this scheme, both the quick response ability of altitude control and the anti-jamming problem were considered. A simulation experiment shows that when an integrated altitude control system is used, the anti-disturbance ability of the integrated altitude is good and the response speed of altitude control system can be dramatically improved.

Study on Anti-ship Missile Saturation Attack Model

Based on the analysis for the interception process of ship-to-air missile system to the anti-ship missile stream, the antagonism of ship-to-air missile and anti-ship missile stream was modeled by Monte Carlo method. This model containing the probability of acquiring anti-ship missile, threat estimation, firepower distribution, interception, effectiveness evaluation and firepower turning, can dynamically simulate the antagonism process of anti-ship missile attack stream and anti-air missile weapon system. The anti-ship missile's saturation attack stream for different ship-to-air missile systems can be calculated quantitatively. The simulated results reveal the relations among the anti-ship missile saturation attack and the attack intensity of anti-ship missile, interception mode and the main parameters of anti-air missile weapon system. It provides a theoretical basis for the effective operation of anti-ship missile.

Damage effectiveness assessment method for anti-ship missiles based on double hierarchy linguistic term sets and evidence theory

The research on the damage effectiveness assessment of anti-ship missiles involves system science and weapon science, and has essential strategic research significance. With comprehensive analysis of the specific process of the damage assessment process of anti-missile against ships, a synthetic damage effectiveness assessment process is proposed based on the double hierarchy linguistic term set and the evidence theory. In order to improve the accuracy of the expert ’s assessment information, double hierarchy linguistic terms are used to describe the assessment opinions of experts. In order to avoid the loss of experts ’ original information caused by information fusion rules, the evidence theory is used to fuse the assessment information of various experts on each case. Good stability of the assessment process can be reflected through sensitivity analysis, and the fluctuation of a certain parameter does not have an excessive influence on the assessment results. The assessment process is accurate enough to be reflected through comparative analysis and it has a good advantage in damage effectiveness assessment.

Firepower distribution method of anti-ship missile based on coupled path planning

Anti-ship missile coordinated attack mission planning is a complex multi-objective optimization problem with multiple combinations of platforms, strong decision-making constraints,and tightly coupled links. To avoid the coupling disorder between path planning and firepower distribution and improve the efficiency of coordinated attack mission planning, a firepower distribution model under the conditions of path planning is established from the perspective of decoupling optimization and the algorithm is implemented. First, we establish reference coordinate system of firepower distribution to clarify the reference direction of firepower distribution and divide the area of firepower distribution;then, we construct an index table of membership of firepower distribution to obtain alternative firepower distribution plans;finally, the fitness function of firepower distribution is established based on damage income, missile loss,ratio of efficiency and cost of firepower distribution, and the mean square deviation of the number of missiles used, and the alternatives are sorted to obtain the optimal firepower distribution plan. According to two simulation experiments, the method in this paper can effectively solve the many-to-many firepower distribution problem of coupled path planning. Under the premise of ensuring that no path crossing occurs, the optimal global solution can be obtained, and the operability and timeliness are good.

Research on terminal maneuver strategy of anti-ship missiles

To design the terminal maneuver strategy of an anti-ship missile,first,the analytical solution of miss distance when an anti-ship missile has planar weaving maneuver and three-dimension spiral maneuver is presented,in which not only the amplitude and frequency are considered but also the initial phase is taken into account.Next,based on the analytical solution of miss distance,the effects on the miss distance of the amplitude,frequency,initial phase of the anti-ship missile＇s maneuver acceleration and the order of flight control system of the air-ship missile are analyzed.Finally,the optimum weaving maneuver and spiral maneuver which make the miss distance be the largest under some conditions are designed,which is of important meaning for increasing the survival probability of the anti-ship missile.

Improvement of Intercept Probability Algorithm for Anti-ship Missile Based on Search Theory

Traditional intercept probability model has some drawbacks and can not meet the demands of command and control system. Aiming at this problem, a new calculation method based on search theory, terminal control area distribution function of anti-ship missile, target distribution function and missile's radar scan feature is proposed. Under the condition of common target distribution, an intercept probability model for present point attacking is determined. The simulation verifies its effectiveness and establishes the selecting model for aiming point when enemy ships evade in high speed.

Surface destructive mechanism on high-temperature ablation, supersonic-erosion, dreg-adherence and corrosion

The exhaust and flame from a supersonic airborne missile high-energy smoke-born engine (SAMHSE) may lead to high-temperature ablation, supersonic-erosion, dreg-adherence (HTASED) and corrosion on the launcher slide track, causing serious problems to the operation and decreasing the lifetime of the launcher. Therefore, it is imperative to study the destructive mechanism so as to guarantee the smooth operation and increase the lifetime of military equipments. Accordingly, HTASED and corrosion were systematically observed and analyzed with the emphasis placed on the mechanism investigations making use of a series evaluation tests, typical missile engine simulation tests, national military standard methods, scanning electron microscopy and electrochemical corrosion tests. It is found that the thermal impact of high-temperature flame and supersonic erosion of corrosive melting particle jet of the SAMHSE lead to surface defects of micro-cracks, denudation and corrosive residue. Some defects reach to metal base becoming to "corrosive channels". Repetitive HTASED may cause ablation-adhesion fatigue stress, which enhances the surface corrosion and destruction. HTASED and corrosion are related to the type of a SAMHSE fuel and experience of the launcher. Surface destruction is related to synergistic effects of the HTASED. The ablated and failed Al or steel surface is liable to electrochemical corrosion characterized by pitting in humid and salt-spray environment.

超声速巡航导弹气动力与推力参数一体化在线辨识

为准确预示超声速巡航导弹飞行中的气动力和推力特性,提升飞行性能及任务适应性,提出了一种气动力与推力参数一体化在线辨识方法。建立了以固体火箭冲压发动机为动力的超声速巡航导弹在纵平面的运动模型,建立了巡航段气动力系数和推力系数多项式模型,采用无迹卡尔曼滤波算法,开展了气动力与推力参数一体化在线辨识仿真验证,基于飞行试验对辨识性能进行了比较验证。研究表明,对超声速巡航导弹进行气动力与推力参数一体化辨识是必要的和有效的,提出的方法可应用于飞行过程中参数在线辨识。

高温富油燃气超燃试验研究

在空气流量１．２ ｋｇ／ｓ 左右的地面连管试验台上， 进行了模拟飞行Ｍａ＝ ４， ５， ６的三个气流总温状态的碳氢燃料（煤油） 超燃试验。试验用双燃烧室方案， 由突扩型亚燃燃烧室燃烧产生的高温可燃气以马赫数１．２５喷入超燃室， 超燃室空气流马赫数为２．１５ （或２．１３）。不同空气流总温状态下燃料当量比对亚燃燃烧室和超燃燃烧室的试验结果表明， 双燃烧室方案实施煤油的超声速燃烧是可行的。若进一步采取混合增强和合理控制油量分配等措施， 则可提高双燃燃烧室超燃效率。

超音速射流气膜冷却效果的试验研究

以二维平板模拟高速导弹头罩上的探测窗口，用电加温产生的热气流模拟导弹飞行时的气动加热，对采用气膜冷却控制导弹探测窗口温度的效果及规律进行了研究。着重探讨了气膜冷却临界长度ＬＣ与气膜冷却有效度η随射流缝高ｓ、喷射率λ及主射流夹角α等参数的变化规律，并总结出一个相关参数及一些经验公式。研究结果与国外有关文献基本一致。

超音速反舰导弹引信延期作用时间

针对以往对反舰导弹引信延期作用时间研究都集中在亚音速条件,对超音速穿甲缺乏研究,从动能定理出发分析了超音速反舰导弹着速对引信延期作用时间的影响,得出的规律是随着超音速反舰导弹速度增加,穿目标后反舰战斗部能量损失率逐渐减小,速度降低越来越小,舰船侧舷对引信延期作用时间影响越来越小。仿真结果表明:随着着速的增加,反舰战斗部存速率具有逼近1的趋势,着速在800m/s以上的超音速反舰导弹引信可以忽略3.5cm厚舰船侧舷对引信延期作用时间的影响。

大气层内导弹侧向喷流干扰流场的数值模拟

采用3阶的WENO格式计算了大气层内带有侧向喷流的超声速导弹绕流流场。计算显示了喷流和绕流干扰的流动结构。喷流上游的高压区域包络弹体,与喷流下游的低压区域一起削弱了喷流产生的侧向力。在文中计算条件下,喷流放大因子小于1,并形成了较小的俯仰力矩。

超音速导弹温度场建模与仿真

超音速导弹温度场的计算对其红外辐射特性研究具有重要的参考价值。对超音速导弹的两个主要辐射源蒙皮和羽流进行了深入分析,建立了超音速导弹温度场模型,仿真验证了模型的可行性。采用理论模型与半经验公式对导弹温度分布进行了计算,将羽流近似成超音速轴对称无伴随绝热等熵流,利用特征线法计算气流参数分布。此外,建立了超音速导弹尾焰形状的理论模型与计算方法。最后进行仿真,计算了导弹各部分的温度分布,并与实验结果比较,结果表明,该方法是一种计算超音速导弹温度分布的有效方法。

多约束条件下高超声速导弹再入轨迹优化

为研究多约束条件下的高超声速导弹再入轨迹优化问题,提出了分段优化策略的再入轨迹优化方法,多阶段求解最优轨迹。建立了导弹的动力学模型、气动力模型和大气密度的计算模型,在考虑导弹的过载、动压、驻点热流和角度变化率等多种约束条件下,以导弹再入末速度最大和驻点热流最小为目标函数,基于hp自适应伪谱法和高斯伪谱法进行了弹道数值仿真。仿真结果表明,分段优化策略有效减少了计算时间,降低了计算复杂度。

关于飞航导弹体系的几个问题

根据国外飞航导弹的发展趋势 ,从体系角度提出了“有的放矢”的指导思想和“效费比”评价准则 ;强调了超低空、亚声速飞航导弹的主导地位 ;指出积极稳妥地发展超声速飞航导弹和组合式飞航导弹 ,形成近、中、远、洲际全程覆盖对地、对海、对信息链实施精确打击的飞航导弹体系的意义 .

旋转导弹风洞六自由度自由飞动导数实验研究

风洞六自由度自由飞实验,是国内首次开展的一项新的风洞实验研究。实验设备为0.2米×0.2米的超声速风洞,求流马赫数为2和2.5。当超声速流场建立后,将以每分钟一万多转的高速旋转导弹模型,向实验段上游发射。模型在风洞观察窗区飞行时,用高速立体摄影拍摄模型飞行姿态随时间的变化。然后根据飞行姿态记录,通过数据辨识,求得俯仰力矩系数斜率,俯仰阻尼力矩系数和马格努斯力矩系数。实验精度优于国外弹道靶自由飞实验结果,尤其是动导数数据取得了满意的结果。

基于能量法的超声速飞航导弹／冲压发动机一体化研究

参考飞机/发动机一体化设计的思路,建立了基于能量法的超声速飞航导弹/冲压发动机一体化设计的约束分析和任务分析模型。简述了超声速飞航导弹任务剖面、约束条件的给定、导弹的质量组成以及冲压发动机安装模型。利用高超声速飞行器的升阻特性,对超声速飞航导弹的升阻特性进行了预测。分析了冲压发动机性能、导弹升阻比对导弹发射总重的影响。约束分析和任务分析的计算结果表明,所建立的一体化约束分析与任务分析模型是合理可行的。

底部排气法的减阻特性及在超声速导弹上的应用

采用数值模拟试验的方法较为系统地研究了底部排气减阻中气流的排出方式、流量消耗率、排气孔孔径和排气孔的收敛或扩张角等因素对底部阻力的影响 ,并将排气减阻的贡献分解为排气冲量和底部压强两部分进行了分析。本文首次将底部排气法应用于导弹上 ,结合一种具有常规气动布局的超声速导弹进行了底部排气方案设计 ,采用一种“底窝器”来提高进气道整流罩的底部压强 ,并进行了风洞实验验证。数值模拟发现 ,研究范围内流量消耗率的增加、排气孔位置的外移、开孔数目的增加以及开孔率的增加均能明显改善其减阻效果 ,但其各自的机理不同。前者主要依靠排气冲量的增加 ,而后三者则主要提高底部压强。风洞实验结果表明 ,“底窝器”能够明显降低全弹阻力系数 ,使全弹阻力系数下降 2 %～ 3 %。