Pub Date : 1900-01-01DOI: 10.33405/2409-7470/2021/1/37/237820
S. Kovalenko, A. Volkov, S. Korsunov
An urgent issue today is the substantiation of the ability of air defense units to carry out their immediate tasks of covering ground forces from the air. The features of the use of ground forces in local conflicts, when the space in which it is necessary to carry out the assigned task, is stretched along the front and in depth are considered. The purpose of the article is to develop a methodology for calculating the effectiveness of covering ground forces from the air by air defense units in new positioning areas. The practical application of the developed methodology will allow the military commander to make the right decision to cover the actions of ground forces from the air. The article proposes a methodology that makes it possible to assess the effectiveness of covering ground forces of the company-battery type by air defense units. The methodology for calculating the effectiveness of covering the actions of ground forces by air defense units consists of an algorithm for assessing the effectiveness of an anti-aircraft missile system (anti-aircraft artillery complex), an algorithm for selecting the parameters of elements and structure of air defense units, an algorithm for proposing to the commander about the effectiveness of the selected structure for making a decision to conduct combat operations. The proposed technique allows the military commander to evaluate the options for the structure of the air defense, choose rational ones, with the best cover efficiency, and helps him make the right decision to repel air strikes. The proposed methodology makes it possible to assess the effectiveness of covering the weapons and infrastructure of ground forces and suggests whether the air defense units are capable of covering the actions of ground forces from the air.
{"title":"METHODOLOGY FOR CALCULATING THE EFFICIENCY OF COVERING GROUND FORCES BY AIR-DEFENSE UNITS WHEN MANAGING LOCAL CONFLICTS","authors":"S. Kovalenko, A. Volkov, S. Korsunov","doi":"10.33405/2409-7470/2021/1/37/237820","DOIUrl":"https://doi.org/10.33405/2409-7470/2021/1/37/237820","url":null,"abstract":"An urgent issue today is the substantiation of the ability of air defense units to carry out their immediate tasks of covering ground forces from the air. The features of the use of ground forces in local conflicts, when the space in which it is necessary to carry out the assigned task, is stretched along the front and in depth are considered. The purpose of the article is to develop a methodology for calculating the effectiveness of covering ground forces from the air by air defense units in new positioning areas. The practical application of the developed methodology will allow the military commander to make the right decision to cover the actions of ground forces from the air. The article proposes a methodology that makes it possible to assess the effectiveness of covering ground forces of the company-battery type by air defense units. The methodology for calculating the effectiveness of covering the actions of ground forces by air defense units consists of an algorithm for assessing the effectiveness of an anti-aircraft missile system (anti-aircraft artillery complex), an algorithm for selecting the parameters of elements and structure of air defense units, an algorithm for proposing to the commander about the effectiveness of the selected structure for making a decision to conduct combat operations. The proposed technique allows the military commander to evaluate the options for the structure of the air defense, choose rational ones, with the best cover efficiency, and helps him make the right decision to repel air strikes. The proposed methodology makes it possible to assess the effectiveness of covering the weapons and infrastructure of ground forces and suggests whether the air defense units are capable of covering the actions of ground forces from the air.","PeriodicalId":165004,"journal":{"name":"The collection of scientific works of the National Academyof the National Guard of Ukraine","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130191277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.33405/2409-7470/2021/1/37/237891
Y. Chernichenko, O. Zabula
Recently during the operation of mortars by appointment mortality rates increased as a result of explosion of mines in the mortar barrel. The construction of a mortar can not be the reason for the destruction of the mortar barrel during firing in a proper technical condition of the mortar, mines and the execution by the personnel of the rules of operation of the mortar complex. The reason for undermining the mine in the mortar barrel can have subjective and objective factors. Subjective factors (SF) are considered as factors that are related to the actions of the service stuff, and the objective factors (OF) are the factors that are associated with external influence on the mortar complex, with the features of the use of the mortar complex. Let's consider the reasons for explosion of mines in the mortar barrel and develop recommendations for their elimination during the operation of mortar complexes. The reasons of double charge are, first of all, the violation by the personnel of the mortar calculation of the rules of exploitation of the mortar complex and security measures during shooting, the failure of the fuse from double charging, the malfunction of the shooting equipment, the technical and qualitative state of the barrel and mines. The causes of misfires can be divided into two groups: the first one - misfires, which depend on the technical state of the mortar; the second one is miscible, which depends on the technical condition of the mine. The first group of faults is achieved through timely and quality maintenance and repair of a mortar. The elimination of malfunctions of the second group is also achieved through timely quality control of the technical condition of the mine (laboratory tests of blowers, maintenance and repair of mines). The reasons that lead to the explosion of mines in the mortar barrel mostly are subjective factors. First of all, to eliminate them, it is necessary to fundamentally change the system of technical training of mortgage experts, commanders of mortar units. Personnel who do not know the design of a mortar, mines, do not have skills in dealing with a mortar, violate security measures during firing must avoid firing. To improve or develop a more reliable double-charge fuse or refuse it, thereby simplifying the design of the mortar by analogy with foreign samples. To approach the drawing up of acts of a technical condition of mortars objectively before admitting to firing. To introduce effective control of the technical condition (suitability for use) of mines and blowers.
{"title":"�NALYSIS OF THE CAUSES OF MINE EXPLOSION IN THE 120 mm MORTAR BARREL","authors":"Y. Chernichenko, O. Zabula","doi":"10.33405/2409-7470/2021/1/37/237891","DOIUrl":"https://doi.org/10.33405/2409-7470/2021/1/37/237891","url":null,"abstract":"Recently during the operation of mortars by appointment mortality rates increased as a result of explosion of mines in the mortar barrel. The construction of a mortar can not be the reason for the destruction of the mortar barrel during firing in a proper technical condition of the mortar, mines and the execution by the personnel of the rules of operation of the mortar complex. The reason for undermining the mine in the mortar barrel can have subjective and objective factors. Subjective factors (SF) are considered as factors that are related to the actions of the service stuff, and the objective factors (OF) are the factors that are associated with external influence on the mortar complex, with the features of the use of the mortar complex. Let's consider the reasons for explosion of mines in the mortar barrel and develop recommendations for their elimination during the operation of mortar complexes. The reasons of double charge are, first of all, the violation by the personnel of the mortar calculation of the rules of exploitation of the mortar complex and security measures during shooting, the failure of the fuse from double charging, the malfunction of the shooting equipment, the technical and qualitative state of the barrel and mines. The causes of misfires can be divided into two groups: the first one - misfires, which depend on the technical state of the mortar; the second one is miscible, which depends on the technical condition of the mine. The first group of faults is achieved through timely and quality maintenance and repair of a mortar. The elimination of malfunctions of the second group is also achieved through timely quality control of the technical condition of the mine (laboratory tests of blowers, maintenance and repair of mines). The reasons that lead to the explosion of mines in the mortar barrel mostly are subjective factors. First of all, to eliminate them, it is necessary to fundamentally change the system of technical training of mortgage experts, commanders of mortar units. Personnel who do not know the design of a mortar, mines, do not have skills in dealing with a mortar, violate security measures during firing must avoid firing. To improve or develop a more reliable double-charge fuse or refuse it, thereby simplifying the design of the mortar by analogy with foreign samples. To approach the drawing up of acts of a technical condition of mortars objectively before admitting to firing. To introduce effective control of the technical condition (suitability for use) of mines and blowers.","PeriodicalId":165004,"journal":{"name":"The collection of scientific works of the National Academyof the National Guard of Ukraine","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123382772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.33405/2409-7470/2022/1/39/263377
H. Ivanets, S. Horelyshev, M. Ivanets, D. Baulin
{"title":"VERIFICATION OF THE HYPOTHESIS ON THE NORMAL DISTRIBUTION OF THE NUMBER OF NATURAL EMERGENCIES ON THE TERRITORY OF UKRAINE","authors":"H. Ivanets, S. Horelyshev, M. Ivanets, D. Baulin","doi":"10.33405/2409-7470/2022/1/39/263377","DOIUrl":"https://doi.org/10.33405/2409-7470/2022/1/39/263377","url":null,"abstract":"","PeriodicalId":165004,"journal":{"name":"The collection of scientific works of the National Academyof the National Guard of Ukraine","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125305389","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.33405/2409-7470/2022/1/39/263361
O. Iohov, V. Maliuk, S. Tymchenko
{"title":"EVALUATION OF MEASURING SIGNALS ON THE BASIS OF TRIANGULAR TIME PULSE MODULATION FOR CONTROL OF THE TECHNICAL CONDITION OF COMMUNICATION AND DATA TRANSMISSION","authors":"O. Iohov, V. Maliuk, S. Tymchenko","doi":"10.33405/2409-7470/2022/1/39/263361","DOIUrl":"https://doi.org/10.33405/2409-7470/2022/1/39/263361","url":null,"abstract":"","PeriodicalId":165004,"journal":{"name":"The collection of scientific works of the National Academyof the National Guard of Ukraine","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123516410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.33405/2409-7470/2021/1/37/237896
V. Nechyporenko, V. Salo, P. Litovchenko, L. Grebenik, L. Ivanova
The proposed scientific work considers and substantiates an effective method for selecting interference fit on smooth cylindrical surfaces of parts, which can be successfully applied in automated design of fit. Based on the analysis of numerical and analytical research of the results of calculation and design of the considered joints, a flat image of a mathematical model of the area of existence of geometric parameter values in a two-dimensional coordinate system (diameter and working length of the fit) was first obtained. At the next stage of modeling many alternative i-th standard interference fits were built. Within each i-th object centers of grouping rational values of geometric parameters were defined. They are formed by crossing the largest segments of allowable ranges of changing values of diameter and working length in each of the models of sets. The position of such centers is analytically described using the mathematical apparatus of the theory of R-functions. On the considered specific example of this research, the criterion for choosing a rational standard interference fit is formulated depending on the values of geometric parameters. The meaning of this criterion is that within the flat geometric image of the model, the shortest distance is analytically determined - the segment between the points of the grouping centers of the model of set of the �-th fit and the model of the area of existence of values. The effectiveness and advisability of the formulated criterion is illustrated by comparison with other criterions obtained in previous researches of the authors. As a result of the research, it was revealed that the task of choosing a single rational design solution is significantly simplified if several criterions of one of the alternative fits coincide.
{"title":"EFFECTIVE METHOD OF SELECTING INTERFERENCE FIT BASED ON AUTOMATED COMPUTER MODEL CONSTRUCTION","authors":"V. Nechyporenko, V. Salo, P. Litovchenko, L. Grebenik, L. Ivanova","doi":"10.33405/2409-7470/2021/1/37/237896","DOIUrl":"https://doi.org/10.33405/2409-7470/2021/1/37/237896","url":null,"abstract":"The proposed scientific work considers and substantiates an effective method for selecting interference fit on smooth cylindrical surfaces of parts, which can be successfully applied in automated design of fit. Based on the analysis of numerical and analytical research of the results of calculation and design of the considered joints, a flat image of a mathematical model of the area of existence of geometric parameter values in a two-dimensional coordinate system (diameter and working length of the fit) was first obtained. At the next stage of modeling many alternative i-th standard interference fits were built. Within each i-th object centers of grouping rational values of geometric parameters were defined. They are formed by crossing the largest segments of allowable ranges of changing values of diameter and working length in each of the models of sets. The position of such centers is analytically described using the mathematical apparatus of the theory of R-functions. On the considered specific example of this research, the criterion for choosing a rational standard interference fit is formulated depending on the values of geometric parameters. The meaning of this criterion is that within the flat geometric image of the model, the shortest distance is analytically determined - the segment between the points of the grouping centers of the model of set of the �-th fit and the model of the area of existence of values. The effectiveness and advisability of the formulated criterion is illustrated by comparison with other criterions obtained in previous researches of the authors. As a result of the research, it was revealed that the task of choosing a single rational design solution is significantly simplified if several criterions of one of the alternative fits coincide.","PeriodicalId":165004,"journal":{"name":"The collection of scientific works of the National Academyof the National Guard of Ukraine","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126092907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.33405/2409-7470/2021/1/37/237850
R. Kaidalov, I. Strashnyi, G. Marenko, �. Dikikh
Currently, the National Guard of Ukraine and other power structures of the state are actively working on the acquisition of subdivisions with modern weapons, including armored vehicles. For objective reasons, such work cannot be done in a short time, therefore, the BTR-70 armored troop-carrier, developed and adopted in the seventies of the last century, is still in operation in significant numbers. An analysis of the design of the armored troop-carrier indicates that its power plant has structural features that do not fully meet modern approaches to the design of such weapons and, moreover, the vehicles have practically exhausted their assigned resource. However, the experience of operating the BTR-70, including in the combat zone, testifies that the potential capabilities and maintainability inherent in its design make it possible to use the armored troop-carrier even after the end of its intended resource, although the aforementioned complicates and increases the cost of operation. One of the ways to solve this problem is the modernization of the power plant of the armored troop-carrier, in particular, the replacement of gasoline engines with modern diesel engines and the improvement of the transmission design. In the course of the study, traction and speed properties of the armored vehicle in the standard configuration and when equipped with two D245.30E2 engines and Deutz engines are calculated and estimated. As a change in the design of the transmission, the option of replacing the standard gearbox with a gearbox with an overdrive is considered. It was found that equipping an armored personnel carrier with modern diesel engines in both cases leads to a significant increase in traction properties and an improvement in the fuel efficiency of the vehicle. However, due to the fact that the crankshaft speed of diesel engines is approximately 25-30 % lower than the corresponding frequency of gasoline engines, the maximum speed of an armored personnel carrier with diesel engines is limited by the design of the transmission and is about 70 km / h. This does not meet modern requirements for machines of this type, therefore, as an option; it is proposed to install a step-up reducer (divider) at the inlet of the gearbox. In this case, it is possible to reduce the gear ratio of the transmission in higher gears and, accordingly, increase the maximum speed of the armored troop-carrier on paved roads.
{"title":"RESEARCH OF RATIONAL VARIANTS OF MODERNIZATION OF ARMORED TROOP-CARRIER BTR-70","authors":"R. Kaidalov, I. Strashnyi, G. Marenko, �. Dikikh","doi":"10.33405/2409-7470/2021/1/37/237850","DOIUrl":"https://doi.org/10.33405/2409-7470/2021/1/37/237850","url":null,"abstract":"Currently, the National Guard of Ukraine and other power structures of the state are actively working on the acquisition of subdivisions with modern weapons, including armored vehicles. For objective reasons, such work cannot be done in a short time, therefore, the BTR-70 armored troop-carrier, developed and adopted in the seventies of the last century, is still in operation in significant numbers. An analysis of the design of the armored troop-carrier indicates that its power plant has structural features that do not fully meet modern approaches to the design of such weapons and, moreover, the vehicles have practically exhausted their assigned resource. However, the experience of operating the BTR-70, including in the combat zone, testifies that the potential capabilities and maintainability inherent in its design make it possible to use the armored troop-carrier even after the end of its intended resource, although the aforementioned complicates and increases the cost of operation. One of the ways to solve this problem is the modernization of the power plant of the armored troop-carrier, in particular, the replacement of gasoline engines with modern diesel engines and the improvement of the transmission design. In the course of the study, traction and speed properties of the armored vehicle in the standard configuration and when equipped with two D245.30E2 engines and Deutz engines are calculated and estimated. As a change in the design of the transmission, the option of replacing the standard gearbox with a gearbox with an overdrive is considered. It was found that equipping an armored personnel carrier with modern diesel engines in both cases leads to a significant increase in traction properties and an improvement in the fuel efficiency of the vehicle. However, due to the fact that the crankshaft speed of diesel engines is approximately 25-30 % lower than the corresponding frequency of gasoline engines, the maximum speed of an armored personnel carrier with diesel engines is limited by the design of the transmission and is about 70 km / h. This does not meet modern requirements for machines of this type, therefore, as an option; it is proposed to install a step-up reducer (divider) at the inlet of the gearbox. In this case, it is possible to reduce the gear ratio of the transmission in higher gears and, accordingly, increase the maximum speed of the armored troop-carrier on paved roads.","PeriodicalId":165004,"journal":{"name":"The collection of scientific works of the National Academyof the National Guard of Ukraine","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129501733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.33405/2409-7470/2021/1/37/237843
P. Buryak, �. Parkhomchuk, Ye. Buryak
In the military units of the National Guard of Ukraine, a system for repairing automotive vehicles has been introduced, which provides for current, secondary and overhaul repairs. Maintenance of machines is carried out in order to eliminate malfunctions arising from the use of machines, and allows the replacement of individual units, including the main one. The average repair consists in the replacement or overhaul of not more than half of the main units. Overhaul restores the life of the machine and should be carried out at specialized enterprises of the Ministry of Defense of Ukraine or at other enterprises under contracts. Actually, in the military units of NGU, only current repairs are carried out. This is due to the high cost of overhaul and its low quality. Therefore, for the military units of the NGU, a diagnostic and recovery system for repairing automotive vehicles is proposed, including two types of repair: maintenance and restoration. The essence of maintenance repair consists in eliminating malfunctions, violations of adjustments during the operation of the machines according to the inspection, listening ? diagnostics with built-in and external diagnostic devices. Reconditioning repair consists in carrying out repair operations related to disassembling, troubleshooting, mechanical or other processing of component parts, assembling units, assemblies, testing them, and, if necessary, replacing them with new or repaired ones. Maintenance and repair repairs of automotive equipment are carried out only if there is a need for their implementation. It is proposed to establish ten parameters of the diagnostic and recovery system for the repair of automotive equipment at NGU and determine the life of the machine only before being discarding. The procedure for determining the number of machines that must be written off and get new ones to increase the non-reduced resource in each operation group is given.
{"title":"IMPROVEMENT OF THE REPAIR SYSTEM OF AUTOMOTIVE VEHICLES OF THE NATIONAL GUARD OF UKRAINE","authors":"P. Buryak, �. Parkhomchuk, Ye. Buryak","doi":"10.33405/2409-7470/2021/1/37/237843","DOIUrl":"https://doi.org/10.33405/2409-7470/2021/1/37/237843","url":null,"abstract":"In the military units of the National Guard of Ukraine, a system for repairing automotive vehicles has been introduced, which provides for current, secondary and overhaul repairs. Maintenance of machines is carried out in order to eliminate malfunctions arising from the use of machines, and allows the replacement of individual units, including the main one. The average repair consists in the replacement or overhaul of not more than half of the main units. Overhaul restores the life of the machine and should be carried out at specialized enterprises of the Ministry of Defense of Ukraine or at other enterprises under contracts. Actually, in the military units of NGU, only current repairs are carried out. This is due to the high cost of overhaul and its low quality. Therefore, for the military units of the NGU, a diagnostic and recovery system for repairing automotive vehicles is proposed, including two types of repair: maintenance and restoration. The essence of maintenance repair consists in eliminating malfunctions, violations of adjustments during the operation of the machines according to the inspection, listening ? diagnostics with built-in and external diagnostic devices. Reconditioning repair consists in carrying out repair operations related to disassembling, troubleshooting, mechanical or other processing of component parts, assembling units, assemblies, testing them, and, if necessary, replacing them with new or repaired ones. Maintenance and repair repairs of automotive equipment are carried out only if there is a need for their implementation. It is proposed to establish ten parameters of the diagnostic and recovery system for the repair of automotive equipment at NGU and determine the life of the machine only before being discarding. The procedure for determining the number of machines that must be written off and get new ones to increase the non-reduced resource in each operation group is given.","PeriodicalId":165004,"journal":{"name":"The collection of scientific works of the National Academyof the National Guard of Ukraine","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115030349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.33405/2409-7470/2021/1/37/237877
V. Pisarev
Approaches of mathematical modeling and calculation results for the loading of vehicle structural elements are presented (using the example of typical design solutions of modern armored personnel carriers). The mathematical model takes into account the peculiarities of the working process of loading during detonation on a mine underneath the front wheel in the direction of movement. The peculiarity lies in taking into account the simultaneous action of excess gas pressure on the wheel and the bottom of the machine body. The influence of the main parameters of the research object in terms of geometry, stiffness, damping, mass and weight is taken into account. The main nonlinearities of elastic damping connections of structural elements (wheels with the machine body and with the supporting surface) are also taken into account. The calculations were made by the numerical Runge - Kutta method with a variable step. With the help of the original program, calculations were carried out and a comprehensive quantitative assessment of the features of the working process of loading during blasting was obtained. The complexity of the assessment consists in a quantitative assessment of the effect of an external force factor, both separately (applied only to the wheel or only to the bottom) and together (excess pressure acts both on the wheel and on the bottom). It has been established that there is a shift in the peak values of the force on the vehicle body during suspension breakdown and accelerations on the vehicle body in the driver's seat and directly on the driver. The reason for the shift of 0.019 sec is the transformation of the force flow on the way from the wheel to the body of the machine during detonation. The magnitude of changes in the parameters of the power flow depends mainly on the value of the given parameters of the wheel suspension (mass, stiffness, damping) and the parameters of the impulse disturbing force factor applied to the wheel. At the same time, the disturbing force factors applied to the wheel and to the body of the machine during blasting differ significantly in magnitude and duration of action. The force factor applied to the wheel is 5.06 times greater than the force factor applied to the body, and the action time is 9.7 times less. It has been established that, taking into account the simultaneous action of excess gas pressure on both the wheel and the bottom of the car body, the driver's acceleration rate from suspension breakdown is 6.33 times greater than the fraction from the gas action on the bottom.
{"title":"ESTIMATION OF THE INFLUENCE OF CONSTRUCTIVE FEATURES AND PARAMETERS OF THE VEHICLE ON THE DYNAMICS OF THE WORKING PROCESS BY LOAD UNDER MINE DETONATION","authors":"V. Pisarev","doi":"10.33405/2409-7470/2021/1/37/237877","DOIUrl":"https://doi.org/10.33405/2409-7470/2021/1/37/237877","url":null,"abstract":"Approaches of mathematical modeling and calculation results for the loading of vehicle structural elements are presented (using the example of typical design solutions of modern armored personnel carriers). The mathematical model takes into account the peculiarities of the working process of loading during detonation on a mine underneath the front wheel in the direction of movement. The peculiarity lies in taking into account the simultaneous action of excess gas pressure on the wheel and the bottom of the machine body. The influence of the main parameters of the research object in terms of geometry, stiffness, damping, mass and weight is taken into account. The main nonlinearities of elastic damping connections of structural elements (wheels with the machine body and with the supporting surface) are also taken into account. The calculations were made by the numerical Runge - Kutta method with a variable step. With the help of the original program, calculations were carried out and a comprehensive quantitative assessment of the features of the working process of loading during blasting was obtained. The complexity of the assessment consists in a quantitative assessment of the effect of an external force factor, both separately (applied only to the wheel or only to the bottom) and together (excess pressure acts both on the wheel and on the bottom). It has been established that there is a shift in the peak values of the force on the vehicle body during suspension breakdown and accelerations on the vehicle body in the driver's seat and directly on the driver. The reason for the shift of 0.019 sec is the transformation of the force flow on the way from the wheel to the body of the machine during detonation. The magnitude of changes in the parameters of the power flow depends mainly on the value of the given parameters of the wheel suspension (mass, stiffness, damping) and the parameters of the impulse disturbing force factor applied to the wheel. At the same time, the disturbing force factors applied to the wheel and to the body of the machine during blasting differ significantly in magnitude and duration of action. The force factor applied to the wheel is 5.06 times greater than the force factor applied to the body, and the action time is 9.7 times less. It has been established that, taking into account the simultaneous action of excess gas pressure on both the wheel and the bottom of the car body, the driver's acceleration rate from suspension breakdown is 6.33 times greater than the fraction from the gas action on the bottom.","PeriodicalId":165004,"journal":{"name":"The collection of scientific works of the National Academyof the National Guard of Ukraine","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115906907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.33405/2409-7470/2022/1/39/263369
I. Strashnyi, G. Marenko, E. Bondar
{"title":"METHODOLOGY FOR ASSESSING OF THE ACCESSIBILITY OF MILITARY CARGO VEHICLES TO PERFORM OBJECTIVES IN DIVISIONS NATIONAL GUARD OF UKRAINE","authors":"I. Strashnyi, G. Marenko, E. Bondar","doi":"10.33405/2409-7470/2022/1/39/263369","DOIUrl":"https://doi.org/10.33405/2409-7470/2022/1/39/263369","url":null,"abstract":"","PeriodicalId":165004,"journal":{"name":"The collection of scientific works of the National Academyof the National Guard of Ukraine","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123392968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1900-01-01DOI: 10.33405/2409-7470/2022/1/39/263364
M. Podrigalo, A. Poberezhnyi, V. Garmash
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