Wyniki wyszukiwania - BazTech

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Wybrane czynniki determinujące proces i morskie warunki badań na pozycji ogniowej „prototypu” 35 mm automatycznej armaty KDA w zakresie określenia możliwości wykorzystania jej w walce

Kobierski J. W., Milewski S.

Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa

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2017

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Vol. 8, Nr 2 (28)

128--158

PL

Wprowadzenie na pokłady okrętów Marynarki Wojennej RP nowych okrętowych systemów rozpoznawczo-ogniowych (OSRO) wymusza potrzebę określenia prawidłowości ich wykorzystania w warunkach normalnych i zmiennych. W opracowaniu przedstawiono wybrane elementy projektu odzwierciedlającego czynniki charakterystyczne dla wyróżnionych badań na pozycji ogniowej w trzech obszarach: I; II i III. Obszar I to pojęcia podstawowe niezbędne przy prowadzeniu badań, obszar II jest związany z prawidłowościami przygotowania OSRO do badań, natomiast obszar III odnosi się do prawidłowości wykonywania zadań rozpoznawczo-ogniowych z OSRO podczas ruchu jego nosiciela.

EN

Introduction of new reconnaissance-fire conduct systems (RFCS) on board ships of the Polish Navy enforces the need to define the regularities of their use under normal and variable conditions. The paper presents selected design elements reflecting the factors specific to the distinguished research for fire position in three areas. The first area is the basic concept for conducting the investigations, the second area is related to the regularities of preparation of the Polish Navy RFCS for testing, the third area refers to the correctness of the task reconnaissance-fire RFCS while moving its carrier.

2

Działo M-65 „Atomic Cannon” kalibru 280 mm

Parol G.

Kwartalnik Bellona

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2017

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Nr 2

151--157

PL

Autor prezentuje 280-milimetrowe działo atomowe M65 „Atomic Cannon”, jedną z najmniej znanych części amerykańskiego projektu zbrojeń atomowych okresu zimnej wojny. Projekt działa zdolnego do przenoszenia ładunków nuklearnych o masie do 15 kiloton opracowany na przełomie lat czterdziestych i pięćdziesiątych XX wieku stanowił duży krok w rozwoju technologicznym środków artyleryjskich armii Stanów Zjednoczonych. Skonstruowanie nowego środka zdolnego do przenoszenia broni masowego rażenia oznaczało również kolejny etap wyścigu zbrojeń państw NATO i Układu Warszawskiego. Przyspieszyło opracowanie rakiet balistycznych zdolnych do przenoszenia ładunków o wielokrotnie większej sile rażenia, przez lata stanowiących dla USA i ZSRR, dwóch supermocarstw tamtego okresu, główne narzędzie zastraszania.

EN

The author presents the 280 mm M65 „Atomic Cannon," one of the least known parts of the American nuclear defense program of the Cold War period. The design of the cannon, capable of carrying nuclear load of up to 15 kilotons, developed at the turn of the 1940's and the 1950's, was a significant step in the technological advancement of the US Army's artillery. Constructing a new means capable of carrying weapons of mass destruction also meant entering a new phase of the arms race of NATO and the Warsaw Pact states. It accelerated the development of ballistic missiles capable of carrying nuclear warheads of much greater striking power, for years constituting the main tool of intimidation used by the two superpowers of those times, the USA and the Soviet Union.

3

Odlewanie armat wczoraj i dziś

Zacharko A., Szucki M.

Przegląd Odlewnictwa

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2008

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Vol. 58, nr 3

104-111

PL

W publikacji zamieszczono różne aspekty wykonywania luf armatnich, w dawnych wiekach i dzisiaj Z upływem czasu ulegała ewolucji technologia odlewania dział, co wynikało z dążenia do otrzymania produktu finalnego pozbawionego wad. Zmieniały się przede wszystkim stosowane masy formierskie, zmieniał się także charakter form. Wciąż miały miejsce dyskusje, czy lepiej jest odlewać do form z rdzeniem, czy bez, a jeśli już, to jak go stabilnie umocować. Pojawia się też pytanie, jak dziś wyglądałaby taka technologia.

EN

The publication includes different aspects of producing cannon barrels. On the turn of ages the technology of casting the cannons evolved, which was caused by the eagerness to achieve a defectless product. First of all the applied moulding sands and the character of moulds were changed. Countless discussions were held whether it is better to cast with or without cores, and if with - how to fix it stable. The question is, what this technology would look like today.

4

Prediction of cannon barrel life

Mahdavinejad R. A.

Journal of Achievements in Materials and Manufacturing Engineering

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2008

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Vol. 30, nr 1

11-18

EN

Purpose: Calculation of the fatigue life based on attaining a critical defect size for fast fracture is very important. Cannon is one of the most used parts in military industries and analysis of this component is under consideration. Therefore, the prediction of its longevity to say, the number of cannon ball that can be fired till it is broken down should be under consideration. Design/methodology/approach: Obviously the number of the cracks and their sizes dictate the life of the cannon's barrel. Since the life of this component directly depends on the inner micro-cracks after numerous firing, the study of these cracks is very important. From this point of view, the stress analysis on crack tip is carried out via ANSYS software in this research. This research was to demonstrate the large changes in total fatigue life caused by the initial crack number and the residual stress at the cannon bore, the fatigue with several cracks is analyzed in the barrel according to the critical explosion pressure.The research is carried out with one, two, three, four and twenty five cracks. Findings: The methods of testing and analysis are believed to be generally applicable to problems in fatigue life evaluation. This analysis shows that the stress intensity on the tip of the crack is a function of its length and increases with the number of these cracks. Since the cannon barrel life is a convert function of the stress intensity of the cracks, multi-cracks condition passes the most fatigue cycling. The shape function of the cracks is also decreased with the number of the cracks. Originality/value: Characterization of the cracking at a cannon bore is a difficult problem. This analysis shows that the critical cycle life of the cannon barrel occurs at two numbers of the cracks.

5

Fatigue study on the cracks of a cannon

Mahdavinejad R. A.

Journal of Achievements in Materials and Manufacturing Engineering

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2008

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Vol. 27, nr 1

59-62

EN

Purpose: Cannon is one of the most usage parts in military industries and analysis of its pipe is very important. Therefore, the prediction of its longevity to say, the number of cannon ball that can be fired till it is break down should be under consideration. Design/methodology/approach: Since the life of cannon's barrel directly depends on the inner micro-cracks under numerous firing, the study of these cracks are very important. From this point of view, the stress analysis on crack tip is carried out via ANSYS software in this research. Findings: This analysis shows that the stress intensity on the tip of the crack is a function of its length and increases with the number of these cracks. Research limitations/implications: In this research the fatigue with several cracks is analyzed in the barrel according to the explosion pressure in order to find the critical conditions. Originality/value: Since the cannon barrel life is a convert function of the stress intensity of the cracks, multi-cracks condition passes the most fatigue cycling. The shape function of the cracks is also decreased with the number of the cracks.

6

The impact of the cannon on the combat vehicle chassis during firing

Borkowski W., Figurski J., Walentynowicz J., Hryciów Z.

Journal of KONES

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2007

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Vol. 14, No. 1

49-61

EN

In this paper the mathematical model of combat vehicle as well as mathematical models of input function generated by the cannon during firing and terrain unevenness was presented. This model enables the analysis of dynamic loads of the equipment mounted inside combat vehicle as well as analysis of dynamic loads of the crew. Parameters of the impulse forces acting on the vehicle during firing were determined on the theoretical basics of internal ballistic of cannon. The results of calculation were presented for hypothetical basic combat vehicle with a 125 mm and 73 mm calibre smoothbore gun. Firing during short stops and during combat vehicle motion at different speeds on terrain unevenness as well as angle of elevation of the gun barrel and rotation angle of the turret on the level of dynamic load were considered. A part of this paper was presented at the RTO AVT Symposium on "Functional and Mechanical Integration of Weapons and Land and Air Vehicles".

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Analiza porównawcza 23 i 25 mm armat ze względów taktyczno-technicznych

Świętek T., Gruszecki W., Łysakowski A.

Problemy Techniki Uzbrojenia

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1999

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R. 28, z. 70

65--75

PL

W artykule przedstawiono porównanie pod względem wartości bojowej 23 mm armaty 2A-14 produkcji ZM "Tarnów" SA z 25 mm armatą KBA produkcji szwajcarskiej firmy Oerlikon. Ponadto dokonano próby oceny skutków wprowadzenia 25 mm armaty KBA na uzbrojenie WP.