scholarly journals Preliminary analysis of ballistic requirements for LOVA propellants for new generation tank ammunition

2020 ◽  
pp. 144-157
Author(s):  
Bartosz Fikus ◽  
Zbigniew Leciejewski ◽  
Jakub Michalski ◽  
Zbigniew Surma ◽  
Radosław Trębiński
Keyword(s):  
Research Team ◽  
Closed Vessel ◽  
University Of Technology ◽  
Pressure Time ◽  
Ballistic Properties ◽  
Critical Components ◽  
Set Up ◽  
Military Institute ◽  
New Generation ◽  
The Military

At the end of 2016, the Scientific-Industrial Consortium (Mesko S.A., Polska Grupa Zbrojeniowa S.A., Warsaw University of Technology, Military University of Technology, Military Institute of Armament Technology) set up an R&D project to develop and manufacture a demonstrator of new generation critical components for a 120 mm Polish tank munition. The critical elements for the project included a combustible charge case, an insensitive propellant and tungsten rods for subcalibre projectiles. The task of the Military University of Technology was to develop the basic technology and fabricate insensitive LOVA propellants on a laboratory scale (research team of the Faculty of Advanced Technologies and Chemistry) and carry out the ballistic and simulation tests of a 120 mm tank gun using ammunition incorporating the developed LOVA propellant (research team of the Faculty of Mechatronics, Armamen and Aerospace). The article also includes an analysis of available literature on energy and ballistic properties of LOVA and JA-2 propellants. Closed-vessel tests of JA-2 propellant (manufactured by Nitrochemie AG, designation LO5460) were also carried out. The tests were carried out in a 200 cm3 closed vessel. Based on the propellant gas pressure/time records, the propellant force and co-volume, and dynamic vivacity curves were determined. A linear combustion rate coefficient was determined using the measured results of the propellant grain geometry. The authors’ own data enabled the carrying out of preliminary simulation tests of the 120 mm propellant system.

‘The Redemption of the Rascals’: The Xinzheng Reforms and the Transformation of the Status of Lower-Level Central Administration Personnel

2003 ◽  
Vol 37 (4) ◽  
pp. 799-829 ◽  
Author(s):  
Luca Gabbiani
Keyword(s):  
Steady Increase ◽  
Central Administration ◽  
New Schools ◽  
Examination System ◽  
Administrative Personnel ◽  
The Status ◽  
Set Up ◽  
The One ◽  
New Generation ◽  
The Military

Two of the main practical problems which confronted the Xinzheng reforms (1901–1911) were, on the one hand, financial issues, and on the other, personnel issues. In this paper, I will concentrate on the latter. When one thinks of the reforms in relation to administrative personnel, the main aspects generally brought up are centered upon innovations introduced at that time. Among other things, we could mention the new schools or, to be more general, the new educational system that was built up around the empire—mostly after 1900—to prepare a new generation of officials trained in specific fields of ‘modern’ knowledge. They, in turn, were expected to fill in the positions in the newly set up administrative institutions at the central and local levels. Their new training was to allow them to be in charge of the new responsibilities the reformed Qing bureaucratic apparatus had set out to perform in such fields as justice, fiscality and finances, the military and police, education or public health, to name but a few. To summarize, the search for talented men, a Chinese age-old principle for sound government, was trusted to that for new talents. The 1905 disbanding of the traditional examination system did much to reinforce this trend. During the first decade of the 20th century, the steady increase in the number of Chinese young men going abroad to study—especially to Japan—can serve as a testimony to this `new knowledge and new talent fever' of the late Qing. The fights against one another to which some of the central and provincial administrative offices resorted in order to secure for themselves the services of those deemed of talent are but another exemplary illustration of this aspect.

scholarly journals Ballistic Analysis of Polish Low-Vulnerability Gun Propellants

2018 ◽  
Vol 9 (3) ◽  
pp. 71-88 ◽  
Author(s):  
Marta CZYŻEWSKA ◽  
Bartosz FIKUS ◽  
Zbigniew LECIEJEWSKI ◽  
Jakub MICHALSKI ◽  
Zbigniew SURMA ◽  
...  
Keyword(s):  
New Technologies ◽  
Experimental Tests ◽  
Closed Vessel ◽  
Test Procedures ◽  
American Military ◽  
Chemistry Research ◽  
University Of Technology ◽  
Initial Stage ◽  
Gun Propellants ◽  
The Military

One direction of modern artillery ammunition development is to reduce its vulnerability to the effects of mechanical and thermal factors during transport, storage and operation. For LOVA, the reduced vulnerability of propellant explosives intended for loading into this ammunition is usually connected with a higher thermal ignition impulse threshold and reduced burning rate under low propellant gas pressure. Since 2016, work has been under way at the Military University of Technology (Warsaw, Poland), intended to develop a Polish low-vulnerability gun propellant for 120 mm tank ammunition. It was established during the initial stage of research and analysis, that the JA-2 gun propellant (more specifically, its energy and ballistics characteristics and geometrical dimensions of grains) will be the reference propellant for the low-vulnerability propellant in development. To this end, the authors performed closed vessel tests with JA-2 propellant (with seven-perforated grains designated LO5460). This paper contains comparative (with the JA-2 propellant) results of closed vessel tests of several propellant blends developed by the MUT Faculty of New Technologies and Chemistry research team. Closed vessel tests of these propellant blends were performed in the Ballistics Laboratory of the MUT Institute of Armament Technology using a manometric chamber with a volume W0 = 200 cm3. Experimental tests and theoretical analyses were performed based on provisions of the standardisation agreement STANAG 4115 [6], American military standard MIL-STD 286C [7] and original test procedures developed based on [8, 9]. The tests focused mainly on the issue of correlation between the chemical composition of the given propellant blend with the expected values of energy and ballistics characteristics in connection with the required shape of propellant grains.

Отцейхгаузадомузеяизисториивоенно-историческогомузеяартиллерии,инженерныхвойскивойсксвязи

2019 ◽  
pp. 134-197
Author(s):  
V.E. . Sergei
Keyword(s):  
18Th Century ◽  
Military History ◽  
Peter The Great ◽  
General Field ◽  
Signal Corps ◽  
History Of ◽  
Set Up ◽  
The 1960S ◽  
Military Engineering ◽  
The Military

The article is dedicated to the history of the Military Historical Museum of Artillery, Engineering and Signal Corps. The author examines the main stages of the museums formation, starting with the foundation of the Arsenal, established in St. Petersburg at the orders of Peter the Great on August 29th 1703 for the safekeeping and preservation of memory, for eternal glory of unique arms and military trophies. In 1756, on the base of the Arsenals collection, the General Inspector of Artillery Count P.I. created the Memorial Hall, set up at the Arsenal, on St. Petersburgs Liteyny Avenue. By the end of the 18th century the collection included over 6,000 exhibits. In 1868 the Memorial Hall was transferred to the New Arsenal, at the Crownwork of the Petropavlovsky Fortress, and renamed the Artillery Museum (since 1903 the Artillery Historical Museum). A large part of the credit for the development and popularization of the collection must be given to the historian N.E. Brandenburg, the man rightly considered the founder of Russias military museums, who was the chief curator from 1872 to 1903. During the Civil and Great Patriotic Wars a significant part of the museums holdings were evacuated to Yaroslavl and Novosibirsk. Thanks to the undying devotion of the museums staff, it not only survived, but increased its collection. In the 1960s over 100,000 exhibits were transferred from the holdings of the Central Historical Museum of Military Engineering and the Military Signal Corps Museum. In 1991 the collection also received the entire Museum of General Field Marshal M.I. Kutuzov, transferred from the Polish town of Bolesawjec. The Military Historical Museum of Artillery, Engineering and Signal Coprs is now one of the largest museums of military history in the world. It holds an invaluable collection of artillery and ammunition, of firearms and cold steel arms, military engineering and signal technology, military banners, uniforms, a rich collection of paintings and graphic works, orders and medals, as well as extensive archives, all dedicated to the history of Russian artillery and the feats of our nations defenders.Статья посвящена истории создания ВоенноИсторического музея артиллерии, инженерных войск и войск связи. Автор рассматривает основные этапы становления музея, начиная с основания Арсенала, созданного в СанктПетербурге по приказу Петра I 29 августа 1703 года для хранения и сохранения памяти, во имя вечной славы уникального оружия и военных трофеев. В 1756 году на базе коллекции Арсенала генеральный инспектор артиллерии граф П. И. создал мемориальный зал, установленный при Арсенале, на Литейном проспекте СанктПетербурга. К концу 18 века коллекция насчитывала более 6000 экспонатов. В 1868 году Мемориальный зал был перенесен в Новый Арсенал, на венец Петропавловской крепости, и переименован в Артиллерийский музей (с 1903 года Артиллерийский Исторический музей). Большая заслуга в развитии и популяризации коллекции принадлежит историку Н.Е. Бранденбургу, человеку, по праву считавшемуся основателем российских военных музеев, который был главным хранителем с 1872 по 1903 год. В годы Гражданской и Великой Отечественной войн значительная часть фондов музея была эвакуирована в Ярославль и Новосибирск. Благодаря неусыпной преданности сотрудников музея, он не только сохранился, но и пополнил свою коллекцию. В 1960х годах более 100 000 экспонатов были переданы из фондов Центрального исторического военноинженерного музея и Музея войск связи. В 1991 году коллекцию также получил весь музей генералфельдмаршала М. И. Кутузова, переданный из польского города Болеславец. Военноисторический музей артиллерии, инженерных войск и войск связи в настоящее время является одним из крупнейших музеев военной истории в мире. Здесь хранится бесценная коллекция артиллерии и боеприпасов, огнестрельного и холодного оружия, военной техники и сигнальной техники, военных знамен, обмундирования, богатая коллекция живописных и графических работ, орденов и медалей, а также обширные архивы, посвященные истории русской артиллерии и подвигам защитников нашего народа.

Concepts for reconstruction of the maritime economy of the polish underground state...in the years 1940–1944

2021 ◽  
Vol 24 (324) ◽  
pp. 142-151
Author(s):  
Bogdan Chrzanowski
Keyword(s):  
Eastern Europe ◽  
Central And Eastern Europe ◽  
Economic Structure ◽  
Maritime Economy ◽  
The Republic ◽  
The Government ◽  
Post War ◽  
Set Up ◽  
Polish Government ◽  
The Military

The regaining of the country’s independence, and then its revival after the war damages, including itseconomic infrastructure – these were the tasks set by the Polish government in exile, first in Paris and thenin London. The maritime economy was to play an important role here. The Polish government was fullyaware of the enormous economic and strategic benefits resulting from the fact that it had a coast, withthe port of Gdynia before the war. It was assumed that both in Gdynia and in the ports that were to belongto Poland after the war: Szczecin, Kołobrzeg, Gdańsk, Elbląg, Królewiec, the economic structure was to betransformed, and they were to become the supply points for Central and Eastern Europe. Work on thereconstruction of the post-war maritime economy was mainly carried out by the Ministry of Industry, Tradeand Shipping. In London, in 1942–1943, a number of government projects were set up to rebuild the entiremaritime infrastructure. All projects undertaken in exile were related to activities carried out by individualunderground divisions of the Polish Underground State domestically, i.e. the “Alfa” Naval Department of theHome Army Headquarters, the Maritime Department of the Military Bureau of Industry and Trade of the Headof the Military Bureau of the Home Army Headquarters and the Maritime Department of the Departmentof Industry Trade and Trade Delegation of the Government of the Republic of Poland in Poland. The abovementionedorganizational units also prepared plans for the reconstruction of the maritime economy, and theprojects developed in London were sent to the country. They collaborated here and a platform for mutualunderstanding was found.

The Abbey of Werden on the Frankish-Saxon Frontier. The Depictions of Landscapes and Emotions in the vita Gregorii and the vitae Liudgeri

Millennium ◽  
2021 ◽  
Vol 18 (1) ◽  
pp. 313-387
Author(s):  
Bart Peters
Keyword(s):  
Third Space ◽  
Ninth Century ◽  
Early Medieval ◽  
Christian Worship ◽  
Emotional Behaviour ◽  
The Creation ◽  
New Generation ◽  
The Military

Abstract This study explores the depictions of landscapes and emotions in the ninth-century hagiographies associated with Liudger: the three vitae Liudgeri and Liudger’s own vita Gregorii. The Frisian missionary founded the monastery of Werden, situated near the Frankish-Saxon frontier. It will be argued that previous historiography on early medieval frontiers has predominantly focused on the military nature of frontiers. Here, more cultural or symbolic natures of the Frankish-Saxon frontier will be discussed. The hagiographical narratives will be examined in conjunction with the notion of a frontier as a ‘third space’. The vitae Liudgeri shaped a discourse that legitimated Liudger’s translation to Werden. This resulted in the creation of a new place of Christian worship in the competitive landscape of post-conquest Saxony, as part of the Christianization of the region. Monasteries like Werden were the places where new missionaries were educated who would continue this Christianization. Exemplary emotional behaviour of the saints, narrated in hagiographies, could help instruct this new generation. Altfrid and Liudger tried to dissuade emotions of anger, indicated by ira or furor, with their hagiographical narratives. These two perspectives offer a glimpse into the attempts of a local monastery to stand out in the Frankish-Saxon frontier.

Assessment of Radius of Investigation of Pressure Transient Analysis in Highly Heterogeneous Reservoirs

2021 ◽  
Author(s):  
Murat Zeybek ◽  
Lei Jiang ◽  
Hadrien Dumont
Keyword(s):  
Transient Analysis ◽  
Numerical Models ◽  
Heterogeneous Systems ◽  
Layered Systems ◽  
Pressure Transient ◽  
Heterogeneous Reservoirs ◽  
Geological Features ◽  
Heterogeneous Formations ◽  
Set Up ◽  
New Generation

Abstract The radius of investigation (ROI) of pressure transient analyses has been traditionally assessed using analytical formulations with basic reservoir parameters for homogenous systems. Numerous studies aimed to improve ROI formulations to incorporate all reservoir and testing parameters such as gauge resolution and rate for more accurate ROI assessments. However, new generation wireline formation testers aim to improve deep transient tests with significant developments in gauge resolution and increasing rate. Challenges still remain in heterogeneous formations such as shaly sands and carbonate reservoirs. In this study, detailed conceptual high-resolution numerical models are set up, including comprehensive reservoir and measurement parameters, to investigate more realistic ROI assessments in layered heterogeneous systems without and with hydraulic communication. Several conceptual examples are presented in layered systems with permeability contrasts. In addition, deviation from infinite-acting radial flow (IAFR) and pressure propagation in highly heterogeneous layered systems are investigated to detect the presence of geological features, including closed boundary systems and the presence of a fault in the proximity of wellbore.

The creation of new research system for the investigation of surface quality by stones

2013 ◽  
Vol 4 (1) ◽  
pp. 43-48
Author(s):  
I. G. Gyurika ◽  
M. Gálos
Keyword(s):  
Research Team ◽  
Face Milling ◽  
Average Surface Roughness ◽  
Research System ◽  
Machining Processes ◽  
Average Surface ◽  
Milling Operations ◽  
University Of Technology ◽  
New Research ◽  
Cutting Speeds

Abstract The research on automated stone machining processes was very significant in the last two decades. Sawing, cutting and grinding of different stones like granite, marble, limestone became cheaper and more productive because of the results of researches. When searching through international specialised literature in the topic of stone machining with machine centres, theoretical summaries or researches can hardly be found. The aim of the researchers writing this article is — as a pioneer in Hungary, but also among the first internationally — to examine the optimization and technological problems in the area of stone milling processes. The researchers have developed a complex research system with the collaboration of two departments of University of Technology and Economics and an industrial stone machining firm, Woldem Ltd. to solve the problems. This paper summarizes the parts of this system. General steps and results of research processes are demonstrated by reference experiments. Face milling operations were made on a granite block with five different cutting speeds and then the researchers measured slip safety and average surface roughness values in case of different samples. Finally, upcoming tasks of the research team are summarized.

scholarly journals Integrative approach to the development of professional qualities among cadets of the Special Forces Faculty of the National Guard Troops

2021 ◽  
Vol 49 (1) ◽  
pp. 172-190
Author(s):  
Irina A. Fedoseeva ◽  
◽  
Lyudmila N. Berezhnova ◽  
Roman A. Guscha ◽  
◽  
...  
Keyword(s):  
Professional Training ◽  
Control Method ◽  
National Guard ◽  
Self Regulation ◽  
Integrative Approach ◽  
Special Forces ◽  
Semantic Organization ◽  
Student’S T ◽  
Military Institute ◽  
The Military

Introduction. The study is relevant due to the fact that in the context of the use of special forces of the Russian Guard to counter the increased threat to Russia's national security from terrorist organizations, the problem arose of finding means to form a "new look" of a special forces officer. The question is raised about an integrative approach in the development of professional qualities of future officers of the special forces of the National Guard troops. Materials and methods. The experimental study involved 160 cadets of the Special Forces Faculty of the Novosibirsk Military Institute of the National Guard of the Russian Federation named after I. K. Yakovlev. The following methods were used: according to moral qualities (motivation for success, Ehlers methodology, value-semantic organization of a personality, methodology for studying the volitional organization of a personality (scale of value-semantic organization of a personality), according to psychological qualities (volitional self-regulation, the methodology by Zverkov and Ehidman, neuropsychic stability, Rybnikov's methodology "Forecast 2", readiness to take risks, Schubert's method), according to physical qualities (mastering professionally applied operations; the control method and testing were used to assess the level of development). The statistical analysis was performed using Student's t-test and Pearson's χ2 test. Results. By the fifth year of studying, as a result of implementing the program "Prospects for the optimal development of professional qualities among cadets of the Special Forces Faculty of the Military Institute of the National Guard Troops", most cadets show a significant increase in terms of the development of moral, mental, and physical qualities. In particular, statistically significant changes were revealed in: the level of neuropsychic stability (χ2 = 10.225; p < 0.01); the level of risk readiness (χ2 = 13.298; p < 0.01); the level of motivation for success (χ2 = 17.045; p < 0.001); development of the value-semantic organization of the personality (χ2 = 18.240; p < 0.001). Conclusion. The main direction of further research is to optimize the professional training of special forces officers, which will improve the level of professional training of a graduate of the Special Forces Faculty of the Military Institute of the National Guard Troops.

scholarly journals TECHNICAL PROPERTIES AND RESEARCH CAPABILITIES OF THE TRUCK SIMULATOR OWNED BY THE MILITARY INSTITUTE OF AVIATION MEDICINE – A NEW PERSPECTIVE IN RESEARCH ON TRUCK DRIVERS

2021 ◽  
Vol 25 (3) ◽  
pp. 26-31
Author(s):  
PAULINA BARAN ◽  
◽  
MARIUSZ KREJ ◽  
MARCIN PIOTROWSKI ◽  
ŁUKASZ DZIUDA ◽  
...  
Keyword(s):  
Degrees Of Freedom ◽  
Driving Simulator ◽  
Truck Drivers ◽  
Aviation Medicine ◽  
Motion System ◽  
Technical Properties ◽  
Conducting Research ◽  
New Perspective ◽  
Military Institute ◽  
The Military

Abstract: This paper is aimed at presenting basic technical properties and possibilities of using the truck simulator owned by the Military Institute of Aviation Medicine (MIAM). The truck driving simulator is a stationary device, equipped with a six degrees of freedom (6 DoF|) motion system and reproducing the functionality of a truck on the basis of the Mercedes Benz Actros cabin. It is intended for conducting research as well as training truck drivers in simulated traffic conditions.

scholarly journals SELECTED TECHNICAL AND LEGAL ASPECTS OF THE PNEUMATIC LAUNCHER OPERATION FOR HOPKINSON MEASURING BARS SET

2020 ◽  
Author(s):  
Kamil Sobczyk ◽  
Leopold Kruszka ◽  
Ryszard Chmielewski ◽  
Ryszard Rekucki
Keyword(s):  
Mechanical Test ◽  
Dynamic Properties ◽  
Construction Materials ◽  
Legal Aspects ◽  
Test Stand ◽  
Physical Experiments ◽  
University Of Technology ◽  
Split Hopkinson ◽  
Material Sample ◽  
The Military

The paper presents selected technical and legal areas of the exploitation of a pneumatic launcher as an essential part of the mechanical test stand of the split Hopkinson bar for testing the dynamic properties of construction materials. The process of impact loading of the tested material sample is carried out by means of a loading bar-projectile fired from this launcher. The concept of the first stage of the modernization of the pneumatic launcher used at the Institute of Civil Engineering of the Military University of Technology (MUT) for over 20 years was discussed in order to facilitate the performance of physical experiments. The formal and legal requirements for the design, construction and usage of a test stand with a pneumatic launcher in a laboratory room are presented.

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