Missile Launch Research Articles

Життєстійкість студентів з інвалідністю та без інвалідності в умовах війни

Background. The purpose of the study is to theoretically and empirically investigate the peculiarities of the resilience of students with and without disabilities in the conditions of war.The relevance of the study is the formation of resilience in students with and without disabilities in war conditions, due to the fact that in war conditions students face trials that they have to overcome or adapt to, adapt to harsh living conditions, while maintaining mental and physical health at the expense of available resources, which are in short supply in times of crisis. Methods. An empirical study of resilience of students with and without disabilities was conducted using the resilience test, which is an adaptation of the Hardiness Survey developed by the American psychologist Salvatore Maddi. Results. The sample consisted of 60 students of the Open International University of Human Development "UKRAINE". According to the results of the study, it is stated that the values of indicators of the components of vitality (when compared with normative indicators) in students with and without disabilities are within the norm and are at an average level. Also, 50 % of students with disabilities have a low level of resilience compared to students without disabilities, who have 36,4 %. Among students without disabilities, the average level of vitality prevails, which is 40,9 %. Summing up, the values of indicators of the components of vitality (when compared with normative indicators) in students with and without disabilities are within the norm and are at an average level, which indicates that students with disabilities are almost no different from students without disabilities. Conclusions. We can say that the war in Ukraine has an effect on the decrease in the vitality index. Students do not feel safe, air alarms significantly affect the educational process, which either stops or continues in a state of anxiety, when everyone is already thinking about whether the cause of the alarm is a training take-off of a plane in enemy territory or a missile launch. Therefore, students cannot control their actions and have control over the situation and do not believe in their own strength. In connection with this, it is still more difficult for students with disabilities to overcome stressful conditions and adapt to the surrounding events. People with disabilities are always in a state of struggle, they always need to adapt to certain conditions and overcome life's difficulties. Students without disabilities have lower indicators of sustainability of involvement and control compared to students with disabilities. In our opinion, students without disabilities are affected by the increased responsibility for loved ones and the fact that some students had to go to work and support their families, also male students belong to the category of possible mobilized, which is clearly a trigger for the underestimation of these indicators. But still, according to indicators of vitality and its components, students with disabilities are almost no different from students without disabilities. At the same time, in order to reduce tension, stress and exhaustion of student youth in the conditions of war, it is necessary to strengthen psychological support, which should be implemented in the institution of higher education to create safe, comfortable learning conditions. The psychological and physical health of students is a significant factor in successful self-realization.

Outcome of the 41st Session of the ICAO Assembly: Some Legal Issues

The forty-first session of the Assembly of the International Civil Aviation Organization (ICAO) was held from 27 September to 7 October 2022. This session was significant when viewed from a legal perspective as it heralded the seventy-fifth anniversary of the ICAO Legal Committee; its service to the legal community; and its importance in initiating work on legal issues, which were formally recognized by the Assembly with the adoption of a Resolution. Additionally, the Assembly addressed three areas of contention outside the legal sphere of the consolidated statement of continuing ICAO policies in the legal field which prompted the Assembly to adopt new resolutions.(A 41-1: Infraction of the Convention on International Civil Aviation by the Republic of Belarus; A 41-2: Infractions of the Convention on International Civil Aviation by the Russian Federation and A41-3: Unannounced missile launches by the Democratic People’s Republic of Korea (DPRK)) These Resolutions brought to bear current legal issues that confront and affect international civil aviation, together with the need to look at the role that ICAO can play in enhancing the capacity of states to comply more effectively with the Convention on International Civil Aviation (Chicago Convention), its Annexes and regulations. The Assembly also focused on encouraging states which have not already done so to ratify amendments to the Chicago Convention and multilateral treaties on international civil aviation. Furthermore, the Assembly provided the international aviation community with the opportunity to take another look at state sovereignty over the air space of its territory; the application of the Chicago Convention in times of war and a state of emergency; ICAO’s jurisdiction over unannounced military activity; and state responsibility. This article will discuss the resolutions adopted by the Assembly in the legal field and the nuances they present. ICAO Assembly, resolutions, Legal Committee, amendment and ratification, infraction of treaties, Vienna Convention, Chicago Convention

Applying the Cultural Anthropological Approaches in Conflict Resolution: The Case of “Comfort Women”

With the recent Russian invasion, China’s rise, and North Korean missile launches, there is an increased importance for the United States to strengthen its East Asian allies, South Korea and Japan. These two countries, however, have a long history of disputes that resulted from the legacy of the Second World War. One of them is the comfort women issue. More than 200,000 teenage Korean girls were taken by Japanese soldiers as sex slaves during the 1930s and 1940s. They are called comfort women. In December 2015, the South Korean and Japanese governments reached an agreement to resolve the issue of comfort women, getting an apology from the Japanese government. However, the surviving comfort women showed resentment toward this agreement and condemned the Korean government for reaching the agreement with the Japanese government. Why do the comfort women and many South Koreans reject this agreement? Also, two different understandings of the identically written accord have brought social conflict in South Korea. Where do these discrepancies in understanding the same accord come from? Applying the three conceptual frameworks—emic and etic approaches in cultural anthropology, the inclusive and restricted models of conflict resolution, and different levels of reconciliation—this paper analyzes the discrepancies in how people analyze and approach conflict resolution and highlights the importance of the cultural anthropological approaches in conflict resolution and reconciliation.

Adaptive Dynamic Occupancy Guidance for Air Combat of UAV

The occupancy guidance of Unmanned Aerial Vehicle (UAV) is one of the inevitable stages in the future air combat. Considering both constraints of missile launch condition and UAV flight performance, this paper established a multi-objective optimization model of occupancy guidance for UAV autonomous pursuit of enemy aircraft. The distance, angle and speed of occupancy guidance state are used as optimization variables to construct the advantage evaluation function. Based on the traditional heuristic algorithm, the Gradient Descent-Truncated Symbiotic Organizations Search (GDT-SOS) is designed to achieve rapid convergence of fitness values. By both numerical simulation and field test, the experiments demonstrated that UAV can autonomously achieve continuous, rapid and advantageous occupancy guidance under different dynamic initial conditions, which verifies that GDT-SOS has more effective than the comparison algorithm.

Synergistic reinforcement and multiscaled design of lightweight heat protection and insulation integrated composite with outstanding high-temperature resistance up to 2500 °C

Developing lightweight and efficient ablation-resistant materials with thermal insulation and conformability over 2500 °C is extremely important for the thermal protection of hypervelocity aerospace vehicles, but significant challenges remain. Herein, a unique lightweight heat protection and insulation integrated composite (QCF/SPA) is developed by a hierarchical construction strategy, integrating macro-scale quartz/carbon hybrid fiber preform, micro-scale silicone aerogel, and nanoscale phenolic aerogel. The QCF/SPA with the macro-micro-nano multiscale structure has the advantages of low-density nature (0.33 ± 0.02 g/cm3), superior insulation (0.050–0.063 W/(m·K)), excellent thermal stability, and mechanical strength. More importantly, the QCF/SPA has outstanding ablation resistance and thermal insulation based on the efficient dual silicon & dual carbon multiple synergistic mechanism originally proposed in this work. The line ablation rate and mass ablation rate reached 0.058 mm/s and 0.014 g/s under the 3.62 MW/m2 oxyacetylene assessment. The as-fabricated QCF/SPA with these combined properties is ideal for thermal protection systems of hypervelocity spacecraft, space re-entry vehicles, rocket propulsion devices, and missile launchers.

Regional Ship-to-Air Missile Ship Maneuvering Cover Model

In view of the problem of a regional ship-to-air missile ship covering an adjacent ship, considering the locations of the ships, the required azimuth angle of a regional ship-to-air missile ship covering an adjacent ship, the maximum azimuth angle of a regional ship-to-air missile ship instantaneously covering an adjacent ship, and the remote distance of the regional ship-to-air missile launch area, a model of a regional ship-to-air missile ship longitudinally and laterally maneuvering to cover an adjacent ship was proposed, which provides a model basis for a regional ship-to-air missile ship longitudinally and laterally maneuvering to cover an adjacent ship.

Integrated reed valves applicable to miniature high pressure compressor and investigation on their dynamic characteristics based on equivalent model

Miniature high pressure compressor (MHPC) is key component of continuous gas supply system in aircraft for missile launching and infrared cooling. Valve design makes a crucial role in reciprocating compressors and traditional valves in high-pressure reciprocating compressors usually occupy a large space, have relative larger clearance volume and spring stiffness, which are incompetent to be applied to MHPC. In this study, integrated reed valves with four cantilevers on a steel plate are proposed to serve as the suction valves and discharge valves in MHPC. By this method, the number of valve parts and the axial dimension can be greatly reduced. Theoretical research has been carried out to reveal the dynamic characteristics of the proposed integrated valves. Numerical methods based on equivalent model of cantilever valve are proposed to improve the calculating efficiency compared to traditional CFD method. The equivalent stiffness and equivalent mass for valve motion equations have been calculated and plugged into the whole mathematical models. Based on the optimized valve parameters, experimental investigation on MHPC has been carried out.

Transfer Alignment Technique for Shipboard Missile Strapdown Inertial Navigation System using an Adaptive Kalman Filter

Missile Guidance system needs accurate estimates from Inertial Navigation System (INS) for guiding
 the vehicle towards the target. In this paper a target point, specified before launch, in a battlefield scenario
 is considered for a landmark using missile Strap Down Inertial Navigation System (SDINS) aided by Master
 INS (MINS) placed on a moving platform. Azimuth information of the missile is one of the most critical
 navigation states for estimation on the moving platform before launching the missile for precise impact.
 An Adaptive Kalman Filter (AKF) based on the error state model is formulated. The 7-state AKF with 4-measurement forms the core, where the filter gain of the innovation sequence (measurements) is
 evaluated. This approach of adaptively computing the gain is tested in a laboratory, on a van and in a ship
 trial, culminating in a successful guided missile launch. Mean and the covariance of the measurement
 residuals were used in a unique way to compute adaptive gain after the accumulation of initial samples.
 A Master INS (with advanced Gyros) whose accuracy is much higher than the accuracy of the missile’s
 SDINS is used for velocity matching algorithm before the launch with execution of an S-maneuver for generation
 of accelerations towards observing the states more appropriately. Estimated error states were used in a feedback mode to get near the true orientation of the Missile’s slave INS. Error quaternions are used for this purpose in the feedback and the gains were selected using offline matrix Riccati equation solution in a discrete domain as used in the modern control system. The results were very encouraging with less than 5 arc minutes of error in azimuth.

Semianalytical Model for Dynamic Analysis of Missile Vertical Cold Launch

To quickly determine the dynamic characteristics of a missile excited by wind load during a vertical cold launch, a semianalytical model has been established by using the transfer matrix method and modal superposition approach, where the missile is simplified as a segmental Timoshenko beam and the adapter is equivalent to a spring with compressive and flexural stiffness. Then, the semianalytical model is verified by a finite element method and used to analyze the effects of wind load, thrust deviation, and the adapter’s elastic modulus on missile launch. The fact validates that the semianalytical model is effective and feasible, as well as more efficient, as compared with the finite element model, which is beneficial to perform the aforementioned influence analysis. The research proves that wind load has almost no effect on the missile’s vertical displacement but makes an obvious influence on the horizontal displacement and yaw angle. The missile rises more slowly, and the horizontal motion is delayed with less thrust; consequently, the horizontal displacement and yaw angle are increased when the missile reaches a specified altitude. The horizontal displacement and yaw angle are decreased with the adapter’s elastic modulus increased when the adapter’s assembly stress remains constant.

Main Characteristics of Underwater Supersonic Gas Jet Flows

Underwater supersonic gas jet flows are sophisticated physical phenomena that widely exist in underwater propulsion, such as underwater rocket, high-speed torpedo, and water-piercing missile launcher (WPML). The present study aims to explore the characteristics of underwater supersonic jets. This research carries out two-dimensional and three-dimensional underwater jet experiments and establishes an improved spherical bubble model to study the transient and steady-state characteristics of the underwater supersonic jet. The simulation results show that the entrainment strength and anti-interference ability are the main factors affecting the transient characteristics of underwater supersonic jets. The experimental results show that the jet angle increases with increasing pressure and the increased rate of the jet angle decreases with increasing pressure. The jet pulsation exists in the entire experimental pressure range from 0.4 MPa to 6.5 MPa. The frequency of back-attack increases first and then decreases with increasing pressure in the chamber. The frequency peak appears at 0.8 MPa, which is 5.96 Hz.

Atlas of AI: Power, Politics, and the Planetary Costs of Artificial Intelligence

Atlas of AI: Power, Politics, and the Planetary Costs of Artificial Intelligence

장사정포 요격체계 교전통제소 명령 할당 방식에 따른 효과도 분석

A long-range artillery intercept system is under development to counter the North Korean long-range artillery threat. Simultaneous engagement capability is very important because this system, which consists of radar, engagement control station, and missile launcher, has to deal with a large number of enemy fire rounds in a short time. In this study, we propose a command assignment method for the control center to improve the effectiveness of the long-range artillery intercept system. The proposed algorithm considers the interceptable shoot time of missiles according to the trajectory of the enemy and the possible schedule of each launcher. To verify the superiority of this algorithm, it was compared with the other two methods, distance-based and random. Experiment was executed under the assumption that that a large number of enemies were concentrated in a certain area, and the result was obtained by repeating 100 times. The results show that our method contributes not only to the excellent effectiveness but also to the efficient operation of the launchers. Each launcher fired as many missiles as possible and generated the least amount of idle time. The results of this study can be used as a reference for the long-range artillery interception system as well as other complex systems in the future.

Analysis of a Cart-Inverted Pendulum System with Harmonic Disturbances Based on its Criterion Matrix

The control of an inverted pendulum is a classical benchmark control problem. Its dynamics resemble that of many real-world systems of interest like pendulous, missile launchers, segways, and many more. The control of this system is challenging as it is a highly unstable, highly non-linear, non-minimum phase system, and underactuated. Furthermore, the physical constraints on the track position also pose complexity in its control design. A great deal of nonlinearity is present inherently and as well as affected by the surrounding external disturbances. The paper presents an approach for analysis of a cart-inverted pendulum system with harmonic disturbances. The approach is based on the index of the criterion matrix of the system named a degeneration factor. The degeneration factor is constructed with the singular values of the criterion matrix of the system and allows us to find frequency range, where the system operates as a whole. A linear-quadratic regulator is used to control the cart-inverted pendulum system. The results are supported with an example.

Modeling of the Missile Launch Dynamic Processes in Short-Range Air Defense System

Armament systems such as guns, launchers simulators are effective tools for training armed forces personnel. A firearm is a complex biomechanical system, so the best quality of training is achieved when training in a simulator, repeating the dynamic processes of the weapon by simulating the perception of real weapon use (feeling). The paper investigates the dynamic and stability properties of the short-range air defense system RBS-70. The RBS-70 short-range air defense system is designed to combat low-flying air targets. The purpose of this paper is to present the physical and mathematical models with com numerical dynamic simulation of the launcher in the first phase of missile flight. The theoretical model was formulated in the vertical plane and verified by the numerical modeling simulation.

International Legal Regulations Concerning Launching of Russian Anti-Satellite Weapon Missiles Reviewed in Space Law Perspective

The development of weapons technology is currently very advanced and competitive, one of which is the Anti-Satellite weapon (ASAT) technology. ASAT has become a real threat to the sustainability of the space environment, this is because ASAT has the potential to damage international peace and security, trigger an arms race, and increase the amount of space debris orbiting the earth. The absence of regulations that specifically regulate ASAT makes countries feel free to conduct anti-satellite missile test launches. For example, in 2021 Russia conducted an ASAT test targeting the Cosmos-1408 satellite. Using normative juridical research and research approaches with statute approach, case approach, and analytical approach, the author wants to study and analyze international legal arrangements regarding the launch of Anti-Satellite Weapon (ASAT) missiles and the legal consequences against Russia as the country that launches Anti-Satellite Weapon (ASAT) missiles. Based on the results of the study, the researchers found that there were no regulations specifically limiting ASAT, but the regulation in question should have been contained in the Outer Space Treaty 1967 as the basis for regulating all activities related to space, then further legal consequences against Russia for launching anti-missile missiles. -satellite, namely Russia is obliged to be responsible in terms of responsibility and liability in terms of liability and is strengthened by the principle of liability based on fault as stated in the Liability Convention 1972.

Missile launches from North Korea and rising chorus of the constitutional revision:

Missile launches from North Korea and rising chorus of the constitutional revision:

АППАРАТНО-ПРОГРАММНЫЙ КОМПЛЕКС ДЛЯ ОСУЩЕСТВЛЕНИЯ ДИНАМИЧЕСКОЙ СТАБИЛИЗАЦИИ ПЛАВУЧИХ КОСМОДРОМОВ

The article presents the results of scientific research on the implementation of the sea launch of missiles using marine technology based in the waters of equatorial latitudes. The analysis of the current level of technical development of marine technology for rocket launches, the advantages of the technology of marine rocket launches are revealed. Results of aerohydrodynamic studies of floating spaceports. Design shortcomings of floating spaceports and ways to eliminate them have been found. The developed technology of stabilization of the floating spaceport, based on the Magnus effect.

Information logistics as a driver for the development of the rocket and space industry

The article is devoted to the study of the use of information logistics for the development of the rocket and space industry. It was determined that information logistics manages the data flows that accompany the material processes of the organization, while using modern information technologies. Accordingly, the use of information logistics in the rocket and space industry will make it possible to identify factors in the information environment that affect the number of rocket launches into space. Using the methods of mathematical statistics, including the high-level programming language Python 3, the information environment of the leading space countries was analyzed and such a significant and obvious factor as the financing of space programs was identified. At the same time, the influence of the information agenda on the number of missile launches was revealed. Accordingly, this factor should be taken into account when developing a management model for the rocket and space industry.

Application of Linear Programming Modeling in Multiwave Missile Launch

Linear programming modeling is mainly concerned with solving the maximum or minimum value of a linear function under a group of linear constraints. It has been widely used in many subjects and fields. As an application example of linear programming, this paper decomposed two-wave salvo into three steps, used Floyd algorithm and 0-1 programming to complete the task allocation model, and used Dijkstra algorithm to carry out path planning for the subsequent transfer of missile vehicles, and designed the transfer path with the highest survival rate.

Evaluation of missile electromagnetic launch system based on effectiveness

To solve the problems of strong infrared radiation, poor continuous combat capability of the system, serious ablation of the launching device, and environmental pollution of the existing missile launching system, electromagnetic launch system (EMLS) has been studied for missile launch system. Combining the situation that the current research on missile electromagnetic launch system (MEMLS) mainly focuses on the key technical points and the deficiencies in the previous research on MEMLS, this paper establishes an effectiveness prediction model based on GRA-PCA-LSSVM, and discusses the investment efficiency of the system based on DEA. The experimental results prove that the established model is reasonable, effective and superior, and provides a reference for the further improvement and development of MEMLS.