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Effect of firing conditions ＆ release height on terminal performance of submunitions and conditions for optimum height of release

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Defence Technology（防务技术） 2017年第3期13卷 200-205页

作者： l.k.gite A.Anandaraj R.S.Deodhar D.k.Joshi k.M.Rajan Armament Research Development Establishment (ARDE) Defence Research Development Organization Ministry of Defence Government of India

Submunitions should exhibit optimum terminal performance at target end when released from certain pre-determined height. Selection of an optimum height of release of the submunitions depends on the terminal parameters l.k. forward throw, remaining velocity, impact angle and flight time. In this paper,the effects of initial firing conditions and height of release on terminal performance of submunitions discussed in detail. For different height of release, the relation between range and forward throw is also established & validated for a number of firing altitude and rocket configurations.

关键词：最佳高度终端子弹性能射击剩余速度飞行时间冲击角

Magmatism during continental collision, subduction, exhumation and mountain collapse in collisional orogenic belts and continental net growth: A perspective

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Science China Earth Sciences 2015年第7期58卷 1284-1304页

作者： SONG ShuGuang WANG MengJue WANG Cao NIU Yaoling MOE key laboratory of Orogenic Belt and Crustal Evolution School of Earth and Space SciencesPeking University Department of Earth Sciences Durham University Institute of Oceanology Chinese Academy of Sciences

Continental orogens on Earth can be classified into accretionary orogen and collisional *** in orogens occurs in every periods of an orogenic cycle,from oceanic subduction,continental collision to orogenic *** collision requires the existence of prior oceanic subduction *** is generally assumed that the prerequisite of continental deep subduction is oceanic subduction and its drag force to the connecting passive-margin continental lithosphere during continental *** subduction and collision lead to the thickening and uplift of crust,but the formation time of the related magmatism in orogens depends on the heating mechanism of *** accretionary orogens,on the other hand,have no strong continental collision,deep subduction,no large scale of crustal thrusting,thickening and uplift,and no UHP eclogite-facies metamorphic rocks related to continental deep *** though arc crust could be significantly thickened during oceanic subduction,it is still doubtful that syn-or post-collisional magmatism would be *** collisional orogens,due to continental deep subduction and significant crustal thickening,the UHP metamorphosed oceanic and continental crusts will experience decompression melting during exhumation,generating syn-collisional *** the orogen unrooting and collapse,post-collisional magmatism develops in response to lithosphere extension and upwelling of asthenospheric mantle,marking the end of an orogenic ***,magmatism in orogens can occur during the continental deep subduction,exhumation and uplift after detachment of subducted oceanic crust from continental crust,and extensional *** time span from continental collision to collapse and erosion of orogens(the end of orogenic cycle)is 50–85 *** orogens are the key sites for understanding continental deep subduction,exhumation,uplift and orogenic *** in collisional orogens plays impo

关键词：碰撞造山带大陆碰撞岩浆活动山体崩塌俯冲带大陆深俯冲地壳增厚大陆岩石圈

铬铁矿预富集和上地幔部分熔融关系的实验研究

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地质论评 1996年第5期42卷 424-429页

作者：金振民 Quan Bai D.l.k.hlstedt 金淑燕中国地质大学 UNIVERSITY OF MINNEASOTA MINNEAPOIlS USA

用合成地幔岩为原始材料,在温度1225°C和严格控制氧分压10^(-5)-10^(-12)atm条件下,对上地幔部分熔融作用与铬铁矿预富集关系进行实验研究。实验结果表明:(1)在达到稳态熔融结构时,5％-8％的玄武质硅酸盐熔体主要赋存在矿物三联点之间... 详细信息

用合成地幔岩为原始材料,在温度1225°C和严格控制氧分压10^(-5)-10^(-12)atm条件下,对上地幔部分熔融作用与铬铁矿预富集关系进行实验研究。实验结果表明:(1)在达到稳态熔融结构时,5％-8％的玄武质硅酸盐熔体主要赋存在矿物三联点之间,它为铬元素从地幔岩中萃取运移和预富集提供了先决条件;(2)在部分熔融过程中原岩的尖晶石和辉石(铬透辉石和顽火辉石)提供的铬元素相结合,形成了富铬尖晶石和铬铁矿(Cr_2O_3可达38％-47％)。上地幔部分熔融作用不仅控制了上地幔岩石类型演化(二辉橄榄岩→方辉橄榄岩→纯橄榄岩),同时它对铬铁矿的预富集起着关键作用。

关键词：地幔岩部分熔融铬铁矿高温实验研究