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About the location of some quasipolinomial roots
Published 2004-12-01“… The location of quasipolinomial roots in a complex plane that appear while we investigate differential equations of the locator and the combustion process in the rocket engine is analysed. The same research is carried out for a differential equation with delay of neutral type appearing in mathematical ecology. …”
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UAV launch methods
Published 2024-06-01“…Catapults are suitable for a wider range of UAV sizes and launch energy requirements; Chemical reactions, such as those occurring in chemical gas generators or through solid rocket fuel combustion in rocket motors, can also provide launch energy. …”
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Burning Rate Enhancement Analysis of End-Burning Solid Propellant Grains Based on X-Ray Real-Time Radiography
Published 2020-01-01“…Unexpected pressure rise may occur in the end-burning grain solid rocket motor. It is generally believed that this phenomenon is caused by the nonparallel layer combustion of the burning surface, resulting in the increase of burning rate along the inhibitor. …”
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Experimental investigation of the parameters of additively manufactured coaxial swirl injectors
Published 2023-06-01“…Usually for successful development of the rocket engine costly equipment as well as advanced manufacturing experience is in need which explains high overall manufacturing cost. …”
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Pesticide application and water quality in Doho and Kibimba rice irrigation schemes, eastern Uganda
Published 2022“…Independent t-test results showed that water pH, temperature and turbidity varied significantly between Doho and Kibimba (P<0.05). Herbicides such as rocket, Diazine, Cypermatrine glyphosate were being used by famers with rocket frequently used at Doho while glyphosate was the only one used at Kibimba. …”
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DISCRETENESS ERRORS OF FREQUENCY LEVEL GAUGES AND METHODS OF THEIR MINIMIZATION
Published 2016-06-01“…The report examines the main causes of errors in the measurement of the level of rocket fuel components by variable frequency sensors - the speed of the wave propagation, the period of modulation, the nonlinearity of the amplitude-frequency characteristics of the generator and circuits, frequency deviation and difference frequency. …”
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Investigation on Aging Model of Solid Propellant Using the Degree of Crosslinking
Published 2022-01-01“…Solid propellant is the main part of solid rocket motor (SRM). To further investigate the service life of SRM, aging of solid propellant should be concerned. …”
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Prospects of Germany’s new North Sea spaceport
Published 2024-08-01“…This strategy was updated in 2023, with one of the priorities being the creation of a dedicated spaceport for launching low-orbit rocket carriers in the North Sea. This project represents a unique opportunity not only to strengthen Germany’s position on the international stage but also to stimulate the development of the national space sector, including its commercialization, known as New Space. …”
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Analytical Study on Deformation and Structural Safety of Parafoil
Published 2018-01-01“…The analytical model is useful for the weakening deformation design and the safety discussion of large parafoil for rocket booster recovery.…”
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Design Mode Analysis of Pareto Solution Set for Decision-Making Support
Published 2014-01-01“…The effectiveness of the proposed method is verified on the conceptual design problem of the hybrid rocket engine.…”
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The concept of reducing the man-made impact of launches of the promising Irtysh launch vehicle in the impact areas of the Baikonur cosmodrome
Published 2019-06-01“…Scientific and methodological approaches to minimizing the man-made impact of launches of promising carrier rockets of the «Irtysh» type by oxygen-kerosene main liquid-propellant rocket engines of the Baiterek rocket complex in areas of falling of the Baikonur cosmodrome are considered. …”
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Adaptation of 3D printing technology and topological optimization methods for creating low flow rate turbochargers
Published 2020-06-01“…The data on the additive technologies mastered by leading foreign companies in the field of aviation and rocket science are analyzed for the manufacture of parts and assembly units using 3D printing with metal materials. …”
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A High-Precision Interpolation Method for Data Transfer in Fluid-Structure Interaction Analysis
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Impact of new fire support capabilities from a joint functions perspective
Published 2025-01-01“…In order to argue the above, I have focused on a fire support capability that has recently become part of the national armed forces structures - the M142 HIMARS (High Mobility Artillery Rocket System). If in the first part of the article I briefly detailed aspects of the operational framework described by the joint functions, in the second part I presented a reasoned perspective on the impact that the capabilities of HIMARS systems have on the way of conceptualizing operations. …”
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An Evaluation Method for the Skeleton Model Based on Function–Behavior–Structure Correlation Analysis
Published 2025-01-01“…The effectiveness of the method is verified through a case study of a rocket nose cone’s skeleton model. This method provides a scientific analysis method for designers to establish a reasonable skeleton model. …”
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Optimization design of an acoustic cover layer for a cylindrical cavity based on porous materials
Published 2025-03-01“…During the launch and flight of carrier rockets, the acoustic and vibrational excitations generated by the external environment pose significant threats to their internal payloads. …”
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Experimental and Theoretical Study of Internal Pressure Loads on Boundary Walls under Gusty Wind Conditions
Published 2022-01-01“…., inner building walls, fairing of rocket, and missile payloads) under gusty wind conditions. …”
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Application of Gap Metric to LADRC Design in Multilinear Model of SDR
Published 2022-01-01“…The solid ducted rocket ramjet (SDR) system faces many disturbances in the process of operation, and the linear active disturbance rejection controller (LADRC) has been widely used in engineering to solve such problems. …”
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