Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Zbigniew Surma"'
Publikováno v:
Problemy Mechatroniki, Vol 14, Iss 2, Pp 73-86 (2023)
The paper presents the results of computer simulations of the transient heat flow in the barrel wall of a 35 mm caliber cannon for a single shot and a sequence of seven shots for a selected 30HN2MFA barrel steel. It was assumed that the inner surface
Externí odkaz:
https://doaj.org/article/2702ede38e4f48c197a088aaee99f3be
Autor:
Zbigniew SURMA
Publikováno v:
Problemy Mechatroniki, Vol 14, Iss 1, Pp 73-88 (2023)
A physical model and specificity of a two-stage light gas gun propulsion system are presented in this paper. For the considered system, a mathematical model of phenomena inside a combustion chamber, a light gas filled chamber, and a barrel was worked
Externí odkaz:
https://doaj.org/article/d5eed02b1c5d4172a01e3b16db634b46
Publikováno v:
Energies, Vol 17, Iss 3, p 702 (2024)
This paper presents the results of numerical simulations of heat transfer in a tube with a protective chromium layer on the inner surface made of steel, with different shrinkage temperatures. Shrinkage in the steel is an unfavorable phenomenon becaus
Externí odkaz:
https://doaj.org/article/680e82f239344e28987e4718d09e5c02
Publikováno v:
Energies, Vol 16, Iss 9, p 3863 (2023)
Mathematical models for the simulation of the operation of various projectile-throwing systems are continuously modified, simultaneously with the development of propellants. For these models, properly determined values of energetic ballistic characte
Externí odkaz:
https://doaj.org/article/d955ad0f1d0548abbf02f2eb1e5592a8
Publikováno v:
Applied Sciences, Vol 13, Iss 9, p 5523 (2023)
This paper presents the results of numerical calculations of heat transfer in the steel wall of a tube with different chromium layer thicknesses on the inner surface for a single and a sequence of heat impulses. In modeling the thermal phenomenon, th
Externí odkaz:
https://doaj.org/article/29cd531b7502488798b3bab59e6712ea
Publikováno v:
Problemy Mechatroniki, Vol 11, Iss 2, Pp 25-30 (2020)
In theoretical simulations of internal ballistics phenomena, the value of pressure generated by the ignition system is required. Typically, the ignition pressure value is assumed to be 3 - 5 MPa. The work presents a measurement stand using a “micro
Externí odkaz:
https://doaj.org/article/ff76e387079c4bbdae478f10e3027390
Publikováno v:
Energies, Vol 15, Iss 22, p 8469 (2022)
The combustible cartridge case has become an integral part of many modern weapons systems. The energetic and burning characteristics of the combustible case can have a significant impact on shot parameters. This paper describes Closed Vessel Tests (C
Externí odkaz:
https://doaj.org/article/5f0ea16e797c4c30b9b07b34d6d2204f
Publikováno v:
Defence Technology, Vol 15, Iss 5, Pp 668-673 (2019)
This paper presents the results of a comparative investigation into the effects of the ignition method on the ballistic properties of a single-base gun propellant, as determined via closed vessel tests. Conventional gunpowder ignition and plasma jet
Externí odkaz:
https://doaj.org/article/e7bc13dcbaba4307827d57902ad8d598
Publikováno v:
Problemy Mechatroniki, Vol 10, Iss 2, Pp 55-68 (2019)
The paper presents an attempt to determine the dynamic vivacity functions of propellants with taking into account a parallel burning of the black powder igniter and the tested propellant. The approach is based on presented results of closed vessel te
Externí odkaz:
https://doaj.org/article/4593a3a62b5e46ec960797bf653d06bb
Publikováno v:
Energies, Vol 15, Iss 7, p 2680 (2022)
This paper presents the method of determining the burning rate of fine-grained propellants based on the results of closed vessel tests. It is shown that in the case of fine-grained propellants, the standard methods of determining the burning rate fai
Externí odkaz:
https://doaj.org/article/e039c6f8eace4779854908bd9294ab30