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1
Content available Regarding the Influence of High Frequency Combustion Instabilities on Operation of Solid Rocket Motors
Safta D., Vasile T., Ion I.
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
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2011
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Vol. 2, Nr 1 (3)
7-24
EN
High frequency combustion instabilities imply a major risk for the solid rocket motor's stable operation and they are directly linked to the response of the solid propellant to the pressure coupling. Our paper aims at defining a linearized onedimensional flow study model of the solid propellant rocket motors' disturbed functioning analysis. Experimental researches were done with an adequate setup, built and improved in our lab, functioning on the basis of the nozzle throat intermittent modulating technique developed by ONERA researchers, able to evaluate the propellant response by the interpretation of the pressure oscillations damping in terms of propellant response.
2
Content available Studies and researchers concerning grenade launcher with high-low pressure chambers
Vasile T., Safta D., Barbu C.
Problemy Techniki Uzbrojenia
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2006
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R. 35, z. 98
15--23
EN
In this paper are presented some aspects concerning grenade launcher with high-low pressure chambers. On the bases of mathematical model of firing phenomenon for this ballistic system was elaborated interior ballistics software. With the aid of this software were studied the variation of gases pressure and grenade velocity versus time and displacement, as well as the influence of different parameters on main ballistic magnitudes. For an extant such ballistic system, the theoretical results obtained with the aid of interior ballistics software and experimental data are compared.
3
Content available Regarding of antifire ballistic system
Barbu C., Vasile T., Coman A.
Problemy Techniki Uzbrojenia
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2005
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R. 34, z. 94
13--20
EN
In this paper it is presented the main aspects concerning of utility, designing and realization of antifire ballistic system. This system is designated for extinguishing of fire in closed areas with difficult accessible positions, acting at distances of 10 to 450 m and different elevations. The system is a recoil ballistic system and can be used individually or embarked on auto vehicles and helicopters. In paper is presented ballistic designing of such as system, too. The system was realized and in present is during of testing.
4
Content available A testing method of propulsion systems on simile micro models
Coman A., Vasile T., Barbu C.
Problemy Techniki Uzbrojenia
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2005
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R. 34, z. 94
21--29
EN
In this paper is presented a testing method of propulsion systems on simile micro models. In order to calculate and design a micro engine simile with a real rocket engine, physical and geometrical relations where deduced. On the base of experimental data measured after testing of simile micro engine, can be establish the ballistic parameters of real rocket engine.
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