Autor: Leciejewski, Zbigniew - Katalog OPAC zbiorów

Tytuł:: On a Certain Method of Determining the Burning Rate of Gun Propellant
Autorzy:: Leciejewski, Zbigniew
Surma, Zbigniew
Powiązania:: https://bibliotekanauki.pl/articles/358624.pdf
Data publikacji:: 2019
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: ballistics
closed vessel test
gun propellant
burning rate
Opis:: The relation between the burning rate, r, of a solid propellant and the pressure, p, of gases surrounding the burning propellant surface is the basic component of the gas inflow equation. The applicability of a linear form of the burning rate law is limited only to those propellants for which the same pressure impulses, Ip, were obtained during closed vessel tests at different loading densities. To determine the values of the power form of the burning rate law it is necessary to know the values of the energetic and ballistic characteristics of the propellant. In this paper, a method is presented for determining the relation r(p) for which the only input data are the pressure, p(t), of the propellant gases recorded during closed vessel tests (only for a single specific loading density) and information on the shape and geometric dimensions of the propellant grains. An analysis of the possibility of applying the proposed method, through examples of single-base, double-base and multi-base propellants with neutral and progressive characteristics of burning surface changes, was carried out for the purposes of the present study. The qualitative and quantitative results of burning rate analyses prove the validity of the assumptions made.
Źródło:: Central European Journal of Energetic Materials; 2019, 16, 3; 433-448
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Ballistic Analysis of Missile Propulsion in a Perforated Barrel Launcher
Autorzy:: Surma, Zbigniew
Leciejewski, Zbigniew
Powiązania:: https://bibliotekanauki.pl/articles/1062726.pdf
Data publikacji:: 2020
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:: mechanics
internal ballistics
rocket propulsion system
perforated barrel
Opis:: This study presents a ballistic analysis of the propulsion of a smart counter-projectile in an active protection system. In order to reduce the pressure of the propellant gases inside the semi-closed barrel of the launcher and to mitigate the effects of the recoil of the launcher, a perforated barrel was chosen. For the system considered, a physical model and a mathematical model of the propulsion of a rocket projectile in a perforated barrel, as well as a computer program, were developed. The gas pressures inside the combustion chamber of the rocket engine and the barrel, as well as the velocity and travel of the missile are the main results from the solution of the presented mathematical model. Based on the resulting calculations, the influence of the holes in the perforated barrel on the operating conditions of the rocket engine, as well as the pressure of propellant gases and the missile velocity inside the barrel were analysed. The use of a perforated barrel caused a significant reduction in the total impulse of the propellant pressure inside the barrel. Based on experimental tests of the barrel launcher-missile assembly, a decrease (about 50%) in the muzzle velocity of the missile was observed. The mathematical model of the interior ballistics presented here allows the missile propulsion, both in a monolithic- as well as a perforated barrel-launcher, to be investigated.
Źródło:: Central European Journal of Energetic Materials; 2020, 17, 4; 475-491
1733-7178
Pojawia się w:: Central European Journal of Energetic Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Use of Standard Meteorological Messages to Simulate the Flight of 35 mm TP-T Projectile Under Actual Conditions
Wykorzystanie standardowych komunikatów meteorologicznych do symulacji lotu 35 mm pocisku TP-T w warunkach rzeczywistych
Autorzy:: Baranowski, Leszek
Leciejewski, Zbigniew
Powiązania:: https://bibliotekanauki.pl/articles/403570.pdf
Data publikacji:: 2019
Wydawca:: Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:: standard meteorological message
METB
METCM
Meteo11
meteoaverage
projectile flight simulation
standardowy komunikat meteorologiczny
meteośredni
symulacja lotu pocisku
Opis:: The paper presents a method of using actual atmosphere parameter data contained in meteorological messages, necessary for numerical calculation of a spin-stabilised projectile trajectory. Three standard meteorological messages are considered: message METB3 compliant with STANAG 4061, message METCM compliant with STANAG 4082, and message METEO11, so called meteoaverage, currently used in the Polish Armed Forces. The purpose of verifying the correctness of the prepared algorithms of using meteorological messages, a computer program simulating the flight of the 35 mm TP-T anti-aircraft projectiles under actual atmospheric conditions was developed, and appropriate calculations were performed.
W artykule przedstawiono sposób wykorzystania danych o rzeczywistych parametrach atmosfery, zawartych w komunikatach meteorologicznych, niezbędnych do numerycznego obliczenia toru lotu pocisku stabilizowanego obrotowo. Rozpatrzono trzy standardowe komunikaty meteorologiczne: komunikat METB3 zgodny ze Stanagiem 4061, komunikat METCM zgodny ze Stanagiem 4082 oraz komunikat METEO11 tzw. meteośredni, stosowany aktualnie w Wojsku Polskim. Celem sprawdzenia poprawności opracowanych algorytmów wykorzystania komunikatów meteorologicznych opracowano program komputerowy symulacji lotu 35 mm pocisku przeciwlotniczego TP-T w rzeczywistych warunkach atmosferycznych i dokonano stosownych obliczeń.
Źródło:: Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2019, 10, 1 (35); 59-74
2081-5891
Pojawia się w:: Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:: Biblioteka Nauki