scholarly journals INCREASING OF AIMING AND SEARCH SYSTEM OF LAND UNMANNED COMPLEX DURABILITY

2021 ◽  
pp. 26-31
Author(s):  
Volodymyr Mykytenko ◽  
Volodymyr Senatorov ◽  
Oleksander Melnyk
Keyword(s):  
Thermal Imaging ◽  
Technical Solution ◽  
Laser Rangefinder ◽  
Search System ◽  
Polarization Of Radiation ◽  
Base Distance ◽  
Thermal Vision ◽  
The Stability ◽  
Two Bodies ◽  
Measuring Unit

Proposals on composition of the aiming and search system of land unmanned complex are offered. The work aims to improve one of the most important technical characteristics of land unmanned complex - survivability. Proposals are given for improving the layout of aiming and search system of land unmanned complex. Existing composition schemes have a low firing life because of the devices included in its structure have are installed into general body. Sniper impact in body makes ineffective all aiming and search system. Authors proposes to install the devices into two bodies along weapon sides. TV-sight should be installed into the first body and thermal-vision sight should be installed into the second body.  Then if sniper impact is affecting one body, then the devices of the second body are able to execute a battle task with some limitations thanks to efficient sight. The issues of controlling the stability of the aiming line of the aiming and search system at the stage of bench tests using a collimation-measuring unit are considered in detail. A technique for adjusting both television and thermal imaging sights is proposed. In addition to increasing the survivability of the entire unmanned complex, the proposed technical solution has a number of other advantages. First, the "cold" zeroing of the combat module is greatly simplified. Instead of a system of two penta mirrors, a BS-0 ° rhombus prism can be used for this. Secondly, the proposed layout potentially simplifies the further modernization of aiming and search system, which would require the inclusion of additional units. For example, to expand the functionality of the complex by analyzing the polarization of radiation from objects and backgrounds, an additional volume is provided to accommodate polarimetric attachments. Thirdly, an even greater increase in the survivability of the complex can be achieved by increasing the secrecy of the combat mission. Usage of the base distance between the entrance pupils of the sights makes it possible to passively measure the range to the target using the internal base rangefinder instead of the laser rangefinder.

scholarly journals HANDHELD THERMAL VISION DEVICES WITH VARIABLE CHARACTERISTICS

2020 ◽  
Vol 25 (4) ◽  
pp. 213-220
Author(s):  
Tatyana N. Khatsevich ◽  
◽  
Evgeniy V. Druzhkin ◽  
Ksenia D. Volkova ◽  
◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Focal Length ◽  
Sensor Arrays ◽  
Optical Power ◽  
Optical Scheme ◽  
Imaging Device ◽  
Uncooled Microbolometer ◽  
Internal Component ◽  
Thermal Vision ◽  
The Stability

The intensive development of thermal imaging device is accompanied by the expansion of its functional possibilities. One of them is the realization of changing magnifications and fields. The aim of the work is to justify the method of changing focal lengths and fields, ensuring the constancy of the relative aperture and axial length of the lenses when changing the field in thermal imaging devices using uncooled microbolometer infrared sensor arrays. A method of structural synthesis of a lens of three components is proposed. The method is characterized by the following: the optical power of the first component is equal to the optical power of the lens, the sum of the optical powers of the second and third components is zero. The aperture diaphragm is located on the third component. The internal component has two discrete positions. Relations between the parameters of components that are found provide the invariability of the back focal length and the relative aperture of the lens when changing the focal length. The capabilities of the method are confirmed by the development of four infrared lenses with two- and three-fold differences in focal lengths. Decreasing the length along the axis and the stability of the relative aperture of the lens with diffractive image qual-ity when changing the focal length in an optical scheme with a bi-aspheric design is achieved.

scholarly journals Thermostatic cover for improving energy and technological efficiency of steel mills

2019 ◽  
Vol 110 ◽  
pp. 01003
Author(s):  
Konstantin Strogonov ◽  
Sergey Tolkanov ◽  
Karina Korkots ◽  
Alexander Fedyukhin
Keyword(s):  
Steel Casting ◽  
Energy Savings ◽  
Casting Process ◽  
Technical Solution ◽  
Metal Release ◽  
Thermal Fields ◽  
Steel Mills ◽  
Stable Production ◽  
Technological Efficiency ◽  
The Stability

The article proposes a technical solution for reducing the energy costs of casting process and providing more stable production conditions, specifically, the use of a thermostatic cap. Two variants of steel casting are considered: with and without the application of a thermostatic cover using the example of a bucket with a capacity of six tons of steel. The technical challenge is to reduce heat losses through the bucket neck to ensure the stability of the melting temperature throughout the casting and to reduce the temperature of metal release from the steelmaking unit. The design of the thermostatic cover with specifications, as well as the duration of process steps in the steel casting with and without the use of a thermally insulated cap are described. The balance calculations were carried out using MathCAD environment, which confirmed significant energy savings with a slight increase in casting time associated with the appearance of an additional technological operation for installing the thermostatic cover after pouring. Using ANSYS Academic software, a study was carried out on the thermal fields of the ladle and steel at various stages of casting for two options, which confirmed the effectiveness of using a thermostatic cover.

scholarly journals PREPARATIONS FOR REMEDIATION OF A FORMER SURFACE MINE – A TECHNICAL RECLAMATION AREA

2019 ◽  
Vol 23 ◽  
pp. 14-19
Author(s):  
Petr Černoch ◽  
Jiří Košťál
Keyword(s):  
Shallow Groundwater ◽  
Underground Water ◽  
Technical Solution ◽  
High Plasticity ◽  
Surface Mine ◽  
Spoil Heap ◽  
Operation Stability ◽  
Reclamation Area ◽  
The Stability

The reclamation area for secondary float energy by-products is located on a spoil heap, 45m thick and 30 years old, and consists mostly of clay stone with high plasticity. When depositing a first 18m high stack, it was necessary to verify stability and to analyse deformations during the reclaiming operation. Stability and deformation depend on the shallow groundwater level. Therefore, it was necessary to propose a technical solution for drainage of the structure concerned. This can be divided into two parts: drainage of surface water and drainage of the shallow underground water. It means a complex solution for the entire construction that would not be possible without long-term monitoring of the construction and field mapping. Completion of the proposed facilities will increase the stability of the reclamation area and it will then be possible to continue with remediation of the former surface mine.

scholarly journals Stability and Resolution in Thermal Imaging

1995 ◽  
Author(s):  
Kurt Bryan ◽  
Lester F. Caudill
Keyword(s):  
Heat Flux ◽  
Inverse Problem ◽  
Thermal Imaging ◽  
Exterior Boundary ◽  
Inversion Procedure ◽  
Material Sample ◽  
The Stability

Abstract This paper examines an inverse problem which arises in thermal imaging. We investigate the problem of detecting and imaging corrosion in a material sample by applying a heat flux and measuring the induced temperature on the sample’s exterior boundary. The goal is to identify the profile of some inaccessible portion of the boundary. We study the case in which one has data at every point on the boundary of the region, as well as the case in which only finitely many measurements are available. An inversion procedure is developed and used to study the stability of the inverse problem for various experimental configurations.

‘My kingdom for a horse’: Bestial Sovereignty in Richard III

2020 ◽  
pp. 121-140
Author(s):  
Huw Griffiths
Keyword(s):  
History Plays ◽  
Richard Ii ◽  
Richard Iii ◽  
Divine Sovereignty ◽  
Animal Imagery ◽  
The Face ◽  
The Stability ◽  
The Moment ◽  
Two Bodies

This chapter offers a conclusion to the book, through a movement away from the human body into the ways that animal bodies are also recruited for Shakespeare’s metaphorics of sovereignty. More than any other of Shakespeare’s history plays, Richard III is dominated by animal imagery. One way to understand this is as a form of moral commentary on the “bestial” state that England has been dragged into by the civil war and, particularly, by the evils of that war as concentrated in Richard himself, a concentration particularly in the image of his body as deformed. However, the slipperiness of metaphor does not allow for the stabilization of sovereignty in any one body, including the stability imagined in the metaphysical conceit of the “kings two bodies”. In this chapter, I offer a final countermand to Kantorowicz’s reading of Richard II wherein Richard’s abdication offers up the Christ-like sacrifice of the king as a concentrated image of divine sovereignty. In place of this, I read Richard III backwards from the moment of Richard’s own brief “abdication” at the end of the play: his willingness to exchange his kingdom for a horse, albeit in the face of death. Whilst not ascribing any revolutionary intent to the character of Richard, this moment affords an alternate insight into the translatable locations of sovereignty. Re-read through its figurations, sovereignty is conceived of as never inalienable; it is, rather, always dependent on the bodies of others including, here, the bodies of animals.

scholarly journals From the King’s Two Bodies to the People’s Two Bodies: Spinoza on the Body Politic

2020 ◽  
Vol 25 (1) ◽  
pp. 46-71
Author(s):  
Marin Terpstra
Keyword(s):  
Body Politic ◽  
The Body ◽  
Political Order ◽  
The Political ◽  
Composite Body ◽  
Political Body ◽  
Starting Point ◽  
The Stability ◽  
Two Bodies ◽  
Traditional Representation

Abstract In this article, using Spinoza’s treatment of the image of the political body, I aim to show what happens to the concept of a healthy commonwealth linked to a monarchist model of political order when transformed into a new context: the emergence of a democratic political order. The traditional representation of the body politic becomes problematic when people, understood as individual natural bodies, are taken as the starting point in political theory. Spinoza’s understanding of the composite body, and the assumption that each body is composed, raises the question of the stability or instability of this composition. This has implications for the way one looks at the political order’s conditions of possibility, I argue, and at the same time reveals the imaginary nature of the political body.

scholarly journals Detection of rock bridges by infrared thermal imaging and modeling

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Antoine Guerin ◽  
Michel Jaboyedoff ◽  
Brian D. Collins ◽  
Marc-Henri Derron ◽  
Greg M. Stock ◽  
...  
Keyword(s):  
Thermal Imaging ◽  
Fractured Rock ◽  
Rock Fracture ◽  
Intact Rock ◽  
Infrared Thermal Imaging ◽  
Rockfall Hazard ◽  
Small Areas ◽  
Rock Bridges ◽  
Ground Based Lidar ◽  
The Stability

Abstract Characterization of rock discontinuities and rock bridges is required to define stability conditions of fractured rock masses in both natural and engineered environments. Although remote sensing methods for mapping discontinuities have improved in recent years, remote detection of intact rock bridges on cliff faces remains challenging, with their existence typically confirmed only after failure. In steep exfoliating cliffs, such as El Capitan in Yosemite Valley (California, USA), rockfalls mainly occur along cliff-parallel exfoliation joints, with rock bridges playing a key role in the stability of partially detached exfoliation sheets. We employed infrared thermal imaging (i.e., thermography) as a new means of detecting intact rock bridges prior to failure. An infrared thermal panorama of El Capitan revealed cold thermal signatures for the surfaces of two granitic exfoliation sheets, consistent with the expectation that air circulation cools the back of the partially detached sheets. However, we also noted small areas of warm thermal anomalies on these same sheets, even during periods of nocturnal rock cooling. Rock attachment via rock bridges is the likely cause for the warm anomalies in the thermal data. 2-D model simulations of the thermal behavior of one of  the monitored sheets reproduce the observed anomalies and explain the temperature differences detected in the rock bridge area. Based on combined thermal and ground-based lidar imaging, and using geometric and rock fracture mechanics analysis, we are able to quantify the stability of both sheets. Our analysis demonstrates that thermography can remotely detect intact rock bridges and thereby greatly improve rockfall hazard assessment.

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