增雨防雹火箭弹催化剂播撒技术的对比研究
Comparative Study in Catalyst Seeding Technology of Rocket for Rain Enhancement or Hail Suppression
增雨防雹火箭弹催化剂播撒技术的对比研究
Comparative Study in Catalyst Seeding Technology of Rocket for Rain Enhancement or Hail Suppression
介绍了HY-1A型增雨防雹火箭弹较传统型增雨防雹火箭弹在催化剂播撒技术方面所做的技术创新,增雨防雹火箭弹催化剂由原来的线性播撒方式改进为体播撒。将线性播撒和体播撒的催化剂扩散分别近似为线源扩散和瞬时点源扩散,基于解析解计算公式近似估算两种播撒方式的催化剂扩散有效区域半径,进而估算有效区域体积。对比发现,给定浓度阈值时,体播撒的催化剂扩散有效区域体积为线性播撒的3.6~7.2倍,且体播撒的催化剂扩散有效区域持续时间较线性播撒持续时间更长。线性播撒和体播撒方式的火箭弹有不同适用对象,后续可进一步改进优化催化剂播撒技术。
催化剂播撒技术,线性播撒,体播撒,催化剂扩散有效区域
seeding technology of catalyst, linear seeding, spatial seeding, effective region by catalyst diffusion
This paper discusses the HY-1A rocket, an innovation in catalyst seeding technology. We compare the HY-1A rocket with traditional rockets which are used for rain enhancement or hail suppression. With the HY-1A rocket, the linear seeding mode of the catalyst is replaced by a spatial seeding mode. The diffusion of the catalyst which is released using the linear seeding mode and spatial seeding mode were approximated as linear source diffusion and instantaneous point source diffusion, from the HY-1A and traditional rockets, respectively. Based on the analytical solution formula of the two diffusion modes, the radius of effective region by catalyst diffusion and the volume of the effective region resulting from the two kinds of seeding modes were estimated. When comparing a given threshold of concentration, the volume of the effective region as a result of the catalyst diffusion by spatial seeding was 3.6-7.2 times greater, and the effective region from spatial seeding was larger for longer, than from linear seeding. A rocket with linear seeding mode or spatial seeding mode could apply different seeding objects, and subsequently we could improve and optimize rocket seeding techniques.
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