星座设计中的安全性问题研究

如何避免星座中卫星之间发生碰撞是星座安全性设计需要考虑的重要问题,给出了预测星座中卫星发生碰撞的一种方法,提出保证星座安全性需要考虑的三个问题并研究了如何避免星座中工作卫星、备份卫星和寿命终止卫星与工作卫星发生碰撞的措施。     

型号合格审定期间航空器审定试飞的制造符合性检查

结合适航规章、程序对航空器审定试飞制造符合性检查的要求,阐述了型号合格审定期间航空器审定试飞制造符合性检查流程和具体检查内容,总结了检查关注要点,可为申请人和制造符合性检查代表开展此项工作提供参考,亦可为军民共用飞行试验的制造符合性检查提供参考。     

两柔性梁碰撞振动的非相似模态

研究以Hertz接触模型描述的两柔性梁的碰撞振动,通过坐标变换将系统投影到环面上分析其模态动力学问题,揭示碰撞模态呈现非相似性质。     

空间飞行器碎片防护结构的简化设计

给出一种基于实验和理论分析的航天器碎片防护结构简化设计方法 ,该方法可用于进行大型空间飞行器碎片防护结构的方案选择和初步结构设计。利用空间碎片的工程环境模型和防护结构几何经验公式 ,采用“设计碎片”的概念 ,对防护结构进行几何结构设计和质量估算 ,并采用改进的防护性能验证算法进行空间碎片的风险评估。通过对惠式防护结构的计算 ,得到的计算结果基本符合实际要求。     

基于多Agent的舰载机弹射起飞仿真层次模型(英文)

With the aid of multi-agent based modeling approach to complex systems, the hierarchy simulation models of carrier-based aircraft catapult launch are developed. Ocean, carrier, aircraft, and atmosphere are treated as aggregation agents, the detailed components like catapult, landing gears, and disturbances are considered as meta-agents, which belong to their aggregation agent. Thus, the model with two layers is formed i.e. the aggregation agent layer and the meta-agent layer. The information communication among all agents is described. The meta-agents within one aggregation agent communicate with each other directly by information sharing, but the meta-agents, which belong to different aggregation agents exchange their information through the aggregation layer first, and then perceive it from the sharing environment, that is the aggregation agent. Thus, not only the hierarchy model is built, but also the environment perceived by each agent is specified. Meanwhile, the problem of balancing the independency of agent and the resource consumption brought by real-time communication within multi-agent system （MAS） is resolved. Each agent involved in carrier-based aircraft catapult launch is depicted, with considering the interaction within disturbed atmospheric environment and multiple motion bodies including carrier, aircraft, and landing gears. The models of reactive agents among them are derived based on tensors, and the perceived messages and inner frameworks of each agent are characterized. Finally, some results of a simulation instance are given. The simulation and modeling of dynamic system based on multi-agent system is of benefit to express physical concepts and logical hierarchy clearly and precisely. The system model can easily draw in kinds of other agents to achieve a precise simulation of more complex system. This modeling technique makes the complex integral dynamic equations of multibodies decompose into parallel operations of single agent, and it is convenient to expand, maintain, and reuse the pro     

无人机飞行碰撞风险影响因素分析

伴随着无人机机载设备能力的提高和低空空域的开放,不同类型的无人机逐渐在抢险救灾、环境监测、短途物流、军用侦察方面得到了广泛的运用。根据无人机在低空空域飞行方向速度随机和避让灵活性大的特点,分析空域内定位误差、速度误差、人机系统和气象条件对碰撞风险的影响,并建议通过无人机碰撞风险研究来推动无人机和民航客机在非隔离空域的联合运行。     

民航飞行员压力源分析及EAP对策研究

<正>民航是高技术、高风险的行业,民航从业者普遍承担着较大的职业压力。特别是作为飞行员,随着民用航空器可靠性的不断增加,面临的体力负荷越来越小,心理压力却越来越大,导致其心理健康状况变差,可能会表现在躯体化、强迫症状、人际关系敏感、抑郁、焦虑等几个方面,严重影响飞行安全。因此探索飞行员压力源并评估其压力,对症下药,对于保障民航安全和提高运行效率具有重要意义。     

国内外民用航空器驾驶员学校的规章标准对比研究

从介绍国际民航组织出版的《国际民航公约》及其相关附件和指导材料入手,详细介绍了国际民航组织制定的涉及民用航空器驾驶员学校的标准及建议措施。在此基础上,以《国际民航公约》附件1中附录2的要求为框架,部分结合美国联邦航空管理局的实践经验,从9个方面对比国内外权威机构制定的民用航空器驾驶员学校管理要求并展望行业发展趋势。