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Astrodynamics 2021年第4期5卷 347-358页

作者： Eloy Pena-Asensio Josep M.Trigo-Rodriguez Marco Langbroek Albert Rimola Antonio J.Robles Departament de Química Universitat Autònoma de Barcelona(UAB)BellaterraCatalonia 08193Spain Institute of Space Sciences(CSIC) Cerdanyola del VallèsBarcelonaCatalonia 08193Spain Institut d’Estudis Espacials de Catalunya(IEEC) Ed.NexusBarcelonaCatalonia 08034Spain Leiden Observatory Faculty of ScienceLeiden University95002300 RA Leidenthe Netherlands Belgian Working Group Satellites(BWGS) Belgium Spanish Meteor Network(SPMN)Team Spain

On February 16,2021,an artificial object moving slowly over the Mediterranean was recorded by the Spanish Meteor Network(SPMN).Based on astrometric measurements,we identified this event as the reentry engine burn of a SpaceX Falcon 9 launch vehicle’s upper *** study this event in detail,we adapted the plane intersection method for near-straight meteoroid trajectories to analyze the slow and curved orbits associated with artificial *** corroborate our results,we approximated the orbital elements of the upper stage using four pieces of“debris”cataloged by the ***’s Combined Space Operations *** on these calculations,we also estimated the possible deorbit hazard zone using the MSISE90 model *** provide guidance regarding the interference that these artificial bolides may generate in fireball ***,because artificial bolides will likely become more frequent in the future,we point out the new role that ground-based detection networks can play in the monitoring of potentially hazardous artificial objects in near-Earth space and in determining the strewn fields of artificial space debris.

关键词： fireball reentry deorbit artificial meteor multistation

Numerical Study on the Whole Process of fireball Evolution in Strong Explosion

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Communications in Theoretical Physics 2019年第11期71卷 1388-1392页

作者： Yin Xia Chuang Xue Chen-Guang Li Guang-Wei Meng Ying-Kui Zhao Jun Yan Bai-Wen Li Institute of Applied Physics and Computational Mathematics

With the actual mean free path for radiation in air and a simplified nuclear device, a one-dimension simulation research on fireball phenomenon in a sea level atmosphere is carried out based on the multi-group radiation hydrodynamic codes(RDMG). It is shown that our theoretical calculations can describe the whole process of the fireball evolution for strong explosions from the early X-ray expansion stage to the shock wave propagation stage. The radius of the shock wave and the brightness of the fireball are in good agreement with the experimental results. The whole thermal radiation power curve of the fireball evolution for strong atmospheric explosion at sea level is plotted for the first time. The impact of radiation opacity of the nuclear device material on the early fireball phenomenon is also studied. It is found that trajectories of the radiation fronts and case shocks change with the opacity of equivalent device *** our simulations, we find that only the early fireball depends on the details of the nuclear device, and after the formation of main shock, the evolution is determined by the properties of hot air for strong atmospheric explosion.

关键词： fireball phenomenon radiation transfer equation the shock wave brightness

Effects of main components on energy output characteristics of thermobaric explosive——A case study of typical formulations

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Defence Technology（防务技术） 2024年第8期38卷 205-216页

作者： Yunfei Zhao Yaning Li Zhiwei Han Peng Bao Jingyan Wang Boliang Wang School of Chemistry&Chemical Engineering Nanjing University of Science and TechnologyNanjing210094China School of Safety Science&Engineering Nanjing University of Science and TechnologyNanjing210094China

As a kind of high-efficiency explosive with compound destructive capability, the energy output law of thermobaric explosives has been receiving great attention. In order to investigate the effects of main components on the explosive characteristics of thermobaric explosives, various high explosives and oxidants were selected to formulate five different types of thermobaric explosive. Then they were tested in both open space and closed space respectively. Pressure measurement system, high-speed camera,infrared thermal imager and multispectral temperature measurement system were used for pressure,temperature and fireball recording. The effects of different components on the explosive characteristics of thermobaric explosive were analyzed. The results showed that in open space, the overpressure is dominated by the high explosives content in the formulation. The addition of the oxidants will decrease the explosion overpressure but will increase the duration and overall brightness of the fireball. While in closed space, the quasi-static pressure formed after the explosion is positively correlated with the temperature and gas production. In addition, it was found that the differences in shell constraints can also alter the afterburning reaction of thermobaric explosives, thus affecting their energy output characteristics. PVC shell constraint obviously increases the overpressure and makes the fireball burn more violently.

关键词： Thermobaric explosives Components Overpressure fireball Afterburning reaction

Explosion damage effects of aviation kerosene storage tank under strong ignition

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Defence Technology（防务技术） 2024年第7期37卷 27-38页

作者： Shixiang Song Cheng Wang Boyang Qiao Gongtian Gu State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China

In order to study the blast damage effects of aviation kerosene storage tanks,the out-field explosion experiments of 8 m3fixed-roof tanks were carried *** fragments,shock wave and fireball thermal radiation of the tank in the presence of bottom oil,half oil and full oil,as well as empty tank,were investigated under internal explosion by various TNT charge contents(1.8 kg,3.5 kg and 6.2 kg).The results showed that the tank roof was the only fragment produced,and the damage forms could be divided into three *** increase of TNT charge content and oil volume enlarged the deformation of the tank,while the hole ratio presented a trend of increase first and then *** H_r,maxand V_(max)values positively increased as increasing the TNT charge content and oil volume(from empty to half oil),but decreased in full *** Pmaxvalues had a progressive increase with the increment of TNT charge content,but not the case with the increase in oil *** development of fireball was divided into three stages:tank roof‘towed'flame,jet flow flame tumbling and rising,and jet flow flame *** Dmaxand Hf,maxvalues both increased as increasing TNT charge content and oil *** oscillation phenomenon of fireball temperature was observed in the cooling *** average temperature of fireball surface was positively correlated with TNT charge content,and negatively correlated with oil volumes.

关键词： Aviation kerosene Storage tank Internal explosion Shock wave fireball

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fireball：用设计创建产品影响力

包装与设计 2013年第2期 14-23页

作者： Anthony Aconis

Anthony Aconls是丹麦最炙手可热的市场营销机构fireball的创办人兼CEO，曾在伦敦、纽约、圣保罗等地的国际广告公司工作，所著畅销书籍包括：对现时常见的只顾品牌形象、

关键词： fireball fireball 产品设计营销机构广告公司品牌形象 CEO

fireball家庭的新奉献──昆腾fireball　low-cost technology(lct)评测

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计算机周刊 2000年第Z1期 29-29页

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美国／fireball

设计 2017年第22期30卷 13-13页

“火球”是一种风筝；中浪控制装置，用一个球和插座装置将风筝和骑手连接在一起。“火球”采用一个旋转无摩擦的连接方法，回避了一个长达数十年的工业标准的钩环连接。相比传统的钩环，“火球”更接近骑手的核心，

关键词： fireball 美国控制装置连接方法工业标准火球无摩擦环连接

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昆腾推出fireball Ict硬盘

计算机信息 2000年第2期 9-9页

Generation scenarios of anodic structures and experimental realization of turbulence in unmagnetized plasma

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Plasma Science and Technology 2020年第8期22卷 90-98页

作者： Prince ALEX Suraj Kumar SINHA Departimento di Fisica G.Occhialini Universita degli studi di MilanoBicoccaI-20126Italy Department of Physics Pondicherry UniversityKalapetPuducherry 605014India

In the present work,we report development of a DC glow discharge plasma(GDP)set-up to study controlled evolution of anodic structures having distinctive geometry,size and layers,generated in front of a positively biased electrode,submerged in unmagnetized *** such an anodic structure,we have also investigated the condition under which the turbulence is *** of these structures,generated in front of a positively biased electrode,depends on multiple parameters such as the ratio of anode to cathode size,electrode separation,gas pressure,biasing configuration such as anode bias,cathode bias and grounding *** attempted to classify different anodic structures observed experimentally,as anode glow,fireball,anode spot,double layer and multiple double layers(MDLs)based on its physical *** these structures the present investigation is focused on *** number of layers,observed in MDLs varied from as high as six to as low as zero,by controlling the operating discharge parameters,*** were carried out using Langmuir *** analysis of floating potential fluctuations corresponds to a multiple anodic structure showed emergence of turbulence,at its critical stage,satisfying condition for self-organized criticality(SOC).This was identified with three slopes observed in the power spectrum,resembling the sand-pile ***,the GDP is completely different from that of the magnetically confined plasma,the nature of turbulence observed with SOC,is very similar to that observed in the scrape of layer of fusion ***,the present investigation could provide new approach to study turbulence of similar nature,under an experimental condition that is free from the complexities of complicated field geometries used in confinement devices.

关键词： glow discharge plasma anode structure multiple anodic double layer turbulence unmagnetized plasma fireball

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国外新产品集锦(1)

太阳能 2005年第6期 44-45页

作者：徐任学

●启动太阳能控制器的新型继电器驱动器其逻辑组件提供系统控制功能如高/低压警报、负载控制、发电机启动等.它读入Morningstar的TriStar控制器的数字输入,或用其他控制器时的蓄电池电压,控制4个独立的继电器驱动输出.它可通过RS-232串... 详细信息

●启动太阳能控制器的新型继电器驱动器其逻辑组件提供系统控制功能如高/低压警报、负载控制、发电机启动等.它读入Morningstar的TriStar控制器的数字输入,或用其他控制器时的蓄电池电压,控制4个独立的继电器驱动输出.它可通过RS-232串口与计算机连接,由计算机软件实现可编程控制.

关键词： fireball 太阳能光伏集锦产品国外蓄电池充电器太阳集热器公共汽车站发光二极管跟踪系统