Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Rafał Chatys"'
Autor:
Rafał Chatys, Mariusz Kłonica
Publikováno v:
Advances in Sciences and Technology, Vol 17, Iss 2, Pp 53-62 (2023)
The paper deals with the influence of quality failure of matrix post-curing on the strength of such complex and difficult "new generation" materials as fiber composites, especially those with polymer matrix. The performed statistical analysis of the
Externí odkaz:
https://doaj.org/article/1d6622a4659f40b589097b9844f80e76
Publikováno v:
Advances in Sciences and Technology, Vol 16, Iss 6, Pp 147-155 (2022)
This paper is a study on the results of strength tests on single-lap joints used primarily in the aerospace industry, based on a Hi-Lok fastener. Two popular structural materials used in the aerospace industry were considered in this work. The test s
Externí odkaz:
https://doaj.org/article/c213861c64fc43b2bf620b78f636e053
Autor:
Rafał Chatys
Publikováno v:
Advances in Sciences and Technology, Vol 14, Iss 4, Pp 148-155 (2020)
The following work describes the application of a mathematical model based on Markov chain theory (MM) to estimate fiber composite strength parameters, taking into account laminate forming aspects using the vacuum bag method. This provides, from a un
Externí odkaz:
https://doaj.org/article/f7b40026fd634696a69882e4445dc4fb
Autor:
Rafał Chatys
Publikováno v:
Aviation, Vol 24, Iss 3, Pp 117-122 (2020)
The paper deals with aspects of the complexity of mechanical properties of porous structures made from copper fibers and fibers reinforced with copper meshes to assess the adhesive strength of the fibrous structure and the cohesion between the compon
Externí odkaz:
https://doaj.org/article/ae7cd814deb74dc380fd78aed317f080
Publikováno v:
Aviation, Vol 18, Iss 1 (2014)
The paper presents the results of boiling heat transfer enhancement due to the application of additional mesh on the heat exchanger surface. The copper mesh of porosity of 75% was sintered to the copper heater producing strong bonds between the eleme
Externí odkaz:
https://doaj.org/article/78df77ce58174f8a8833ac47e7a01756
Autor:
Valery Polyakov, Rafał Chatys
Publikováno v:
Aviation, Vol 18, Iss 1 (2014)
In order to provide knowledge on the intensity of sound transmission through the whole thickness of an isotropic spherical shell its vibrations are resolved on the radius. The vibrations are caused by harmonic sources located on the inner surface. Th
Externí odkaz:
https://doaj.org/article/a71f8d4132d44e4c90100b9bc0c093d4
Autor:
Rafał Chatys, Zbigniew Koruba
Publikováno v:
Aviation, Vol 9, Iss 2 (2005)
This work discusses the use of a mini gyroscope with three degrees of freedom to control or remote control an unmanned aerial mini‐vehicle (mini‐UAV). The gyroscope determines the reference system for the navigation of the UAV. The algorithm of t
Externí odkaz:
https://doaj.org/article/c491b578abf2467891115d971dd00a65
Publikováno v:
Transactions on Aerospace Research. 2021:71-83
This article reviews the methods of safety management using Heinrich’s and Bird’s pyramids. The presence of a causal relationship between pyramid levels, as a result of inconsistencies in the activities of an organization and personnel, lead to i
Autor:
Rafał Chatys, Sergey Kravchenko, Aleksandrs Urbahs, Natalja Panova, Margarita Urbaha, Kristine Carjova
Publikováno v:
Aviation; Vol 25 No 2 (2021); 73-78
Aviation, Vol 25, Iss 2, Pp 73-78 (2021)
Aviation, Vol 25, Iss 2, Pp 73-78 (2021)
The paper presents the air-launch system enabling the delivery of small satellites into low Earth orbit. One of the most important advantages of the concept is its cost. Generally, the paper proves that launching a carrier from an aerial platform (a
Publikováno v:
Materials, Vol 14, Iss 2128, p 2128 (2021)
Materials
Volume 14
Issue 9
Materials
Volume 14
Issue 9
A simple and prompt method to determine the mechanical properties of industrial multilayer extrusion polypropylene pipes for a gravity sewer network is suggested. The engineering formulas included for calculating the permissible thickness and relativ