从灭火救援谈减少高层建筑火灾损失的对策

近年来,高层建筑群死群伤和重大财产损失的恶性火灾事故频发。为减少高层建筑火灾事故人员伤亡和财产损失,从高层建筑火灾扑救难点进行了分析研究,有针对性地提出了在火灾扑救过程中有效减少火灾损失的策略。     

64mm催泪弹的空中运动特性研究

建立64mm催泪弹外弹道数学模型,分析64mm催泪弹的空中运动状态,找出影响64mm催泪弹飞行稳定性的主要因素,给出64mm催泪弹的改进方向和技术措施,以提高催泪弹的可靠性和作用有效性,并指导现装备的催泪弹的改进和新型催泪弹的设计。     

Effect of the end cap on the fragment velocity distribution of a cylindrical cased charge

The prediction of the fragment velocity distribution of a cylindrical cased charge with end caps is one of the key issues to assess the damage efficiency of the warhead. However, limited work has been con-ducted to predict the fragment velocity distributions along the axis of cylindrical cased charges with end caps. This paper presents a study of the velocity distribution of fragments caused by the explosion of a cylindrical cased charge with end caps. The fragment velocity distribution and the end cap velocity were determined by an X-ray radiography method, and the axial fragment distribution was determined by witness plates. It was found that the velocities of fragments, especially near the edge, were increased when the end caps were added, and the position of maximum velocity is closer to the non-detonation end. The fragment velocities were increased, and the fragment projection range was decreased with the increase of the thickness of the end cap. A formula for fragment velocity distributions of a cylindrical cased charge with end caps, which is based on Huang's formula, was proposed by the theoretical analysis and data fitting and validated experimentally. The results indicate that the proposed formula is accurate in predicting the fragment velocity distribution along the axis of a cylindrical cased charge with end caps detonated at one end.     

反潜编队应召搜索能力计算及效果评估

本文在分析反潜编队应召搜索特点的基础上,对应召搜索能力进行了必要的战术计算,对应召搜索的效果进行了评估,为实际反潜作战中提高对潜搜索的效果提供了可靠的依据。     

高层民用建筑电气防火设计

针对高层民用建筑电气防火设计问题，结合现行国家标准的规定进行了探讨，提出了消防电源及其配电、应急照明等设计原则。