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1.
<正>挪威防务研究中心研发出一种用于复合推进剂的含FOX-7的无烟GAP-RDX材料由硝胺炸药(如黑索今RDX、奥克托今HMX)、叠氮缩水甘油醚(GAP)和增塑剂制备的复合推进剂,可替代一些火箭发动机中的无烟双基推进剂,具有重要的应用前景。近期,挪威防务研究中心研发出一种含有1,1-二氨基-2,2-二硝基乙烯(FOX-7)的新型无  相似文献   

2.
FOX-7及含FOX-7的HTPB推进剂安全性能   总被引:5,自引:3,他引:2  
陈中娥  李忠友  姚南  雷晴  王度 《含能材料》2010,18(3):316-319
采用DSC-TG热分析联用仪和感度测试仪对比研究了1,1-二氨基-2,2-二硝基乙烯(FOX-7)和黑索今(RDX)及含FOX-7(RDX)的HTPB推进剂的多种感度。结果表明,FOX-7的热解活化能为245.2 kJ.mol-1,分解放热峰温为222.13℃,摩擦感度不高于68%,落锤撞击感度大于25.0 J。同比含RDX的HTPB推进剂配方,含FOX-7的HTPB推进剂的机械感度(摩擦、撞击)和静电火花感度显著降低,当FOX-7的含量为15%时,HTPB/AP推进剂中高氯酸铵(AP)的热分解剧烈程度已显著弱化,推进剂的主要分解放热峰温在260℃左右,与RDX/HTPB推进剂相比,该温度前移了近40℃。  相似文献   

3.
硝基呋咱/CMDB推进剂能量特性   总被引:1,自引:1,他引:0  
根据最小自由能法,采用NASA-CEA软件,研究了六种硝基呋咱化合物:3-硝基呋咱(NF)、3,4-二硝基呋咱(DNF)、3-硝氨基-4-硝基呋咱(NNF)、3-硝氨基-4-硝基呋咱铵盐(ANNF)、3-硝氨基-4-硝基呋咱肼盐(HNNF)和3-硝氨基-4-硝基呋咱羟胺盐(HANNF)的能量特性。研究了硝基呋咱化合物含量对复合改性双基(CMDB)推进剂能量特性的影响和压强对硝基呋咱/CMDB推进剂能量特性的影响。结果表明,HANNF和HNNF单元推进剂的比冲高于RDX,分别为2744.8 N·s·kg-1和2802.2 N·s·kg-1。六种硝基呋咱化合物使CMDB推进剂的比冲大幅提高,其中HNNF和HANNF使CMDB推进剂的比冲分别提高74.6 N·s·kg-1和91 N·s·kg-1。六种硝基呋咱/CMDB推进剂的比冲均随压强升高而增加。比冲受压强影响顺序为DNFNNFHANNFANNFHNNFNF。  相似文献   

4.
含LLM-105的改性双基推进剂的机械感度   总被引:2,自引:0,他引:2  
研究了2,6-二氨基-3,5-二硝基吡嗪-1-氧化物(LLM-105)的含量和粒度对含LLM-105的改性双基推进剂机械感度的影响,并将LLM-105-CMDB推进剂的机械感度与含六硝基六氮杂异戊兹烷的改性双基推进剂(CL-20-CMDB)、含3,4-二硝基呋咱基氧化呋咱的改性双基推进剂(DNTF-CMDB)及含奥克托今的改性双基推进剂(HMX-CMDB)的感度进行了比较。结果表明:用LLM-105逐步取代改性双基推进剂中的RDX,推进剂的机械感度也随之降低,撞击感度H50由23.4cm增加至39.3cm;高能量密度材料含量相同的几种改性双基推进剂机械感度由低往高依次为:LLM-105-CMDB、DNTF-CMDB、CL-20-CMDB、HMX-CMDB、RDX-CMDB。  相似文献   

5.
采用燃速-靶线法研究了1,1-二氨基-2,2-二硝基乙烯(FOX-7)的含量、粒度及不同铅盐/铜盐/炭黑三元复合燃烧催化剂对硝化棉/三羟甲基乙烷三硝酸酯(NC/TMETN)低敏感无烟螺压改性双基推进剂燃烧性能的影响。结果表明,随着NC/TMETN基推进剂配方中FOX-7含量的增加,燃速先上升后下降,当FOX-7含量为25%时,可将基础配方10 MPa下的燃速由5.87 mm·s^-1提高至14.90 mm·s^-1,当FOX-7含量由25%增至30%时,10 MPa下的燃速由14.90 mm·s^-1降至12.78 mm·s^-1,FOX-7含量由5%增加至30%时,6~16 MPa下的压力指数由0.97降至0.60;用等量细颗粒的FOX-7取代粗颗粒时,可使推进剂10 MPa下的燃速降低1.16 mm·s^-1,使推进剂6~14 MPa各压力区间的压力指数增大;B-Pb/B-Cu/CB催化剂可以将NC/TMETN/FOX-7基改性双基推进剂10 MPa下燃速由未加催化剂时的14.90 mm·s^-1提高至18.65 mm·s^-1,6~16 MPa下的压力指数由未加催化剂时的0.63降至0.35。  相似文献   

6.
含3,4-二硝基呋咱基氧化呋咱(DNTF)推进剂的能量特性   总被引:11,自引:4,他引:7       下载免费PDF全文
利用国军标方法及CAD系统软件,在标准条件(pe/pc=70∶1)下,计算了含3,4-二硝基呋咱基氧化呋咱(DNTF)的各类推进剂的能量特性,结果表明DNTF的单元推进剂比冲为2696.4N.s.kg-1,比CL-20单元推进剂的理论比冲还高31.1N.s.kg-1;用DNTF取代丁羟推进剂、改性双基推进剂以及GAP推进剂中的RDX或AP可以提高相应推进剂的理论比冲和特征速度。由于DNTF不含氯元素,且摩擦感度比RDX低得多,因此将DNTF引入推进剂中对提高推进剂的综合性能是有益的。  相似文献   

7.
采用Material Studio软件和分子动力学(MD)方法模拟了β-奥克托金(HMX)晶体生长形貌。采用双层结构模型,模拟了钝感含能化合物3-硝基-1,2,4-三唑-5-酮(NTO)、1,1-二氨基-2,2-二硝基乙烯(FOX-7)和黑索今(RDX)对β-HMX晶体形貌的影响,以及3种分子对于β-HMX晶面的附着包覆作用。研究结果表明,3种分子都可附着在β-HMX的生长晶面上,其中FOX-7可以较为均匀地附着在β-HMX晶面,有望实现高能钝感包覆,但是对于β-HMX晶体形貌的影响不大;NTO与RDX分子在β-HMX各晶面的结合能存在差异,可一定程度控制HMX的晶形,其中RDX可以使β-HMX晶体形貌趋于球形化。  相似文献   

8.
为探索3,4-二硝基呋咱基氧化呋咱(DNTF)对改性双基推进剂(RDX/Al/CMDB)的影响,以DNTF逐渐取代螺压高能硝胺改性双基推进剂中的RDX进行验证试验。表征了引入DNTF后改性双基推进剂的工艺性能、力学性能、燃烧性能、安全性能以及能量特性。研究结果表明:DNTF的引入对推进剂加工工艺性能及化学安定性无不良影响;DNTF的引入不仅可以提高推进剂能量,对改善推进剂力学性能以及降低机械感度也是有益的。DNTF的引入可以适当提高推进剂燃速;在引入的DNTF含量不超过10%时,燃速压力指数所受影响不明显。  相似文献   

9.
新型螺压高能改性双基推进剂研究   总被引:1,自引:0,他引:1  
介绍了一种以螺旋压伸成型工艺制造的新型五组元(NC-NG-DNTF-HMX-Al)高能改性双基推进剂及其主要性能,重点讨论了推进剂研制的关键技术。研究结果表明:3,4-二硝基呋咱基氧化呋咱(DNTF)以及球形铝粉、奥克托今(HMX)的成功应用使得改性双基推进剂的能量性能获得大幅度改善;含能安定剂N-甲基对硝基苯胺(PNMA)的应用研究使推进剂不仅获得了优良的化学安定性,更进一步提高了推进剂的能量;含能催化剂的研究既保证推进剂具有良好的燃速特性,又对提高推进剂能量做出了更进一步的贡献。研制成功的新型高能改性双基推进剂综合性能优良,推广应用前景良好。  相似文献   

10.
将1,1-二氨基-2,2-二硝基乙烯(FOX-7)与环三亚甲基三硝胺(RDX)、1,3,5-三氨基-2,4,6-三硝基苯(TATB)、1-氧-2,6-二氨基-3,5-二硝基吡嗪(LLM-105)、环四亚甲基四硝胺(HMX)和六硝基六氮杂异伍兹烷(CL-20)五种常用单质炸药分别以质量比为1∶1混合,获得五种含FOX-7的混合炸药。采用变温X-射线粉末衍射技术,研究了温度对混合炸药中FOX-7晶型转变的影响。升温过程,在105~125℃,五种混合炸药中FOX-7都发生了α→β相转变;当继续升温时,HMX/FOX-7、LLM-105/FOX-7混合炸药中FOX-7并未发生β→γ晶型转变过程;降温过程中,RDX/FOX-7和CL-20/FOX-7混合炸药中FOX-7没有发生γ→β晶型转变,而是直接发生γ→α晶型转变;而FOX-7在其它三种混合炸药中的降温过程晶型转变与升温过程晶型转变是可逆的,即在降温过程发生从γ→β或β→α的晶型转变。  相似文献   

11.
Tetraacetyldibenzylhitane (TADBIW) was subjected to debenzylation by nitrosating with inorganic materials available commercially to synthesize tetraacetyldinitrosohexaazaisowurtzitane (TADNSIW). TADNSIW was purified, and its structure was determined by FTIR, 1H NMR, MS and element analysis. The debenzylation reaction of TADBIW gave quantitative benzaldehyde as a by-product. This indicates that the reaction produces an imine cation as an intermediate. Hexanitrohexaazaisowurtzitane (HNIW) was prepared from unpurified TADNSIW with the yield over 96.0 % and the purity more than 98.0 %. And the mechanism of the reaction from TADNSIW to HNIW is proposed to be oxidation of nitroso and nitration of acetyl on the molecule of TADNSIW, This reaction system involved is simple, and the reaction can complete within a short time and under mild conditions. The product can be easily to separate and the waste disposed readily.  相似文献   

12.
The technique of watermarking has been introduced into 2D vector maps for many potential applications such as protecting the copyright of important GIS (geographical information system) data and tracing the data source of military maps. In most previous works, although the validity of the map data could be preserved during the embedding procedure, the shape-distortions of the map elements are usually neglected which would tend to degrade the invisibility of the watermarking schemes. A shape-preserving algorithm for watermarking 2D vector maps is presented in this paper. A 1D distance sequence extracted from the original map is adopted as the cover data instead of 2D coordinates. A watermark bit is represented by changing the distributions of the cover data. The embedding procedure induces lower shape-distortions than in former works. Experimental results indicate better invisibility of the proposed scheme, as well as its robustness to certain attacks such as map simplification, interpolation, additive noise and most geometric transforms.  相似文献   

13.
Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design.  相似文献   

14.
By analyzing the influencing factors of part quality making of sheet alloy of titanium by vibra cutter, the shape of upper reamer is set as cylinder and wedge-shaped form, and the lower reamer as plain and hemicycle form, and its main structural parameters are defined as well. Then it is validated further that such improved vibra cutter reamer can be used to process curve-edged parts of titanium alloy sheet. The experimental result shows that the titanium alloy sheet parts processed by above equipment have no sharpen angles for convex parts and evident crevasse of concave-edged part. In summary, such improvement can eliminate the free-waved edge and improve the manufacture quality of titanium alloy sheet parts greatly.  相似文献   

15.
By analyzing the working principle of Linux network device driver, discussing the Linux network driver structure and its key technologies, the general network driver structure and its design methodologies in Linux system are summarized. Through modifying the network device driver of Linux device driver 3rd version snull, c and improving the COW technology, the Zero-Copy technology in Linux (kernel version 2.6.11 ) is implemented. In the end, the success test tells us that the thorough analysis of network device driver is the foundation of many applications, and it also provides a certain improvement to a lot of real applications, even to military application development.  相似文献   

16.
For measuring velocity and impacting position of single fragment of warhead, a non-contact measuring method is proposed, in which a six-light-screen array, a position indicator, a multi-channel chronograph and a computer are used.The principle of measurement is described. The key device of the system is a light screen array sensor which consists of six light screens allocated with certain geometrical parameters. When the fragment flies through the light screen array, the time of passing through each of the screens is recorded by the multi-channel chronograph. According to the time data and the geometrical parameters of the array, the velocity vector and the location of the fragment can be calculated immediately. The presented method can be used to locate the fragment and to measure the real velocity on its flying direction. It can also be used to measure the velocity of a fragment swarm after the system is engineered further.  相似文献   

17.
The initiating behavior of fine-grained explosives by small flyer is studied. The diameter of small flyer in this device is 1 ram. The test results indicate that the granularity of explosives has great effect on its flyer initiating sensitivity.The flyer initiating sensitivity of the fine-grained explosives is higher and the critical initiating energy is lower than that of common explosives. For common explosive, the flyer initiating sensitivity increases as the density is reduced. But for the fine-grained explosive, the test results are exactly opposite.  相似文献   

18.
阐述了数码电子雷管中,点火药剂细结晶三硝基间苯二酚铅(LTNR)的制备工艺;从点火药剂的种类、加入黏合剂的质量分数、桥丝直径、点火头的电阻值、防潮漆的蘸涂等方面对点火头性能的影响因素进行了探讨;通过震动试验、并联起爆试验、延期精度检测与考核,试验结果表明:一次性合成的细结晶LTNR是制造数码电子雷管点火头较为理想的点火药剂,按技术要求生产的点火头性能指标能够满足行业标准要求。  相似文献   

19.
An expression for estimating the aeroheating on a warhead nose at different supersonic speeds is proposed by incorporating CFD (computational fluid dynamics) and the least-square method. Compared with the traditional estimation formula, the expression is more accurate, convenient and can be used in the optimized design of warheads. The error from the result obtained in the test of a ball cartridge flight is less than 3 %. It satisfies the engineering requirements.  相似文献   

20.
The nonlinear dynamic model of spinning ballistic missiles is established during the first boosting phase of the missile. Based on the conventional backstepping sliding mode control and the assumption of a two time-scale separation of missile dynamics, a graded sliding mode controller is designed with two sub-sliding surfaces which have invariability to external disturbances and parameter perturbations, and a matrix which comprises three first order low pass filters is introduced to prevent "explosion of terms". Owing to the upper bounds of the uncertainties are difficult to obtain in advance, adaptive laws are introduced to estimate the values of the uncertainties in real-time. Eventually, the numerical simulation results given to show the proposed controller can ensure the steady flight of missiles.  相似文献   

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