Wyniki wyszukiwania - BazTech

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Application of the Energetic Complex [Cu(TNBI)(NH3)2(H2O)] in Heterogeneous Solid Rocket Propellants

Bogusz R., Rećko J., Magnuszewska P., Lewczuk R.

Central European Journal of Energetic Materials

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2018

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Vol. 15, no. 2

391--402

EN

This paper presents results from the application of [Cu(TNBI)(NH3)2(H2O)] (CuTNO) to heterogeneous solid rocket propellants based on HTPB/AP, replacing RDX. A series of different compositions of solid heterogeneous rocket propellants based on HTPB and ammonium perchlorate, containing CuTNO or RDX, were prepared and investigated. The ballistic parameters of the examined propellants were determined by combustion in a laboratory rocket motor (LRM). The ballistic properties were evaluated in the pressure range 4-10 MPa and it was found that the linear burning rate at 10 MPa increased by more than 20% for the CuTNO containing propellant, compared to the RDX-based composition. By linear regression of the r = f(p) curves obtained, the burning laws for the investigated propellants were determined. It was found that the CuTNO additive increases the pressure coefficient by over 46%, compared to unmodified propellant. The determination of the sensitivities to friction and impact, the calorific value, hardness and decomposition temperature of the propellants obtained were also investigated.

2

Badania stałego heterogenicznego paliwa rakietowego zawierającego Butacen®

Bogusz R., Florczak B., Skupiński W., Chmielarek M.

Materiały Wysokoenergetyczne

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2017

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T. 9

179--187

PL

W pracy przedstawiono wyniki badań wybranych właściwości stałego heterogenicznego paliwa rakietowego (SHPR) na bazie kauczuku HTPB zawierającego Butacen®. Oba powyższe składniki SHPR zostały wykonane w kraju. W ramach prowadzonych prac wykonano serię paliw o zmiennej zawartości Butacenu® jako modyfikatora szybkości spalania w składzie paliwa w zakresie 1-4% wagowych. Dla uzyskanych próbek paliw oznaczono takie parametry jak twardość, wrażliwość na bodźce mechaniczne oraz kaloryczność. Wykorzystując laboratoryjny silnik rakietowy (LSR) dokonano spalenia uzyskanych paliw i wyznaczenia liniowej szybkości spalania w zakresie ciśnień 3-11 MPa. Ponadto dokonano analizy termicznej wpływu Butacenu® na proces rozkładu SHPR.

EN

The paper presents the results of studies of the properties of heterogeneous solid rocket propellant (HSPR) based on HTPB rubber containing Butacene®. Both of these HSPR ingredients were made domestically. As part of the work, a series of propellants with a variable content of Butacene®, as a combustion rate modifier in the range of 1-4%, were prepared. For these propellant samples, parameters such as hardness, mechanical sensitivity and calorific values were determined. Using a laboratory rocket motor (LRM), the propellants were combusted and the linear combustion rate determined at a pressure range of 3-11 MPa. In addition, the effect of Butacene® on the HSPR decomposition process was investigated by thermal analysis.

3

Badania właściwości heterogenicznych paliw rakietowych po procesie przyspieszonego starzenia

Sanecka P. W., Florczak B., Maranda A.

Chemik

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2016

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Vol. 70, nr 1

19--26

PL

Silniki rakietowe na heterogeniczne stałe paliwo rakietowe (HSPR) charakteryzuje ściśle określony czas przechowywania (magazynowania), który zależy głównie od zmienności w czasie właściwości fizykochemicznych i mechanicznych HSPR. Czas ten określa się na podstawie przyspieszonych testów starzenia w temperaturach wyższych niż otoczenia, które pozwalają prognozować okres bezpiecznego magazynowania oraz przydatności eksploatacyjnej ładunków napędowych. Charakterystyki starzenia się HSPR zależą przede wszystkim od mechanizmu utleniania usieciowanego kauczuku HTPB (lepiszcza), który wpływa na zmianę parametrów mechanicznych paliwa. Badania starzeniowe są ważne także z punktu widzenia bezpieczeństwa środowiskowego, bowiem zapobiegają: niekontrolowanym samozapłonom paliwa w miejscu składowania, zniszczeniu lub samozapłonowi silnika rakietowego w trakcie pracy, użytkowaniu paliwa o obniżonych parametrach balistycznych oraz zagrożeniu zdrowia i życia osób zatrudnionych w zakładach przemysłu obronnego związanych z produkcją HSPR.

EN

Rocket motors for heterogeneous solid rocket propellant (HSRP) has a strictly defined time of storage, which depends primarily on the volatility of physicochemical and mechanical HSRP with time. This time is determined on the basis of accelerated aging tests at temperatures higher than ambient, that allow us to forecast a period of safe storage and operational suitability for propelling charges. HSRP characteristics of aging depend primarily on the mechanism of oxidation in crosslinked rubber HTPB (binder), which alters the mechanical properties of the propellant. Aging tests are also important from the point of view of environmental safety, because they prevent: uncontrolled combustion of the propellant storage site, destruction or ignite in the rocket motor during operation, use of propellant with lower ballistic characteristics and risk in the health and life of people employed in institutions of the industry of the defense related to production of HSRP.

4

Study of the Effect of Nitrated Hydroxyl-terminated Polybutadiene (NHTPB) on the Properties of Heterogeneous Rocket Propellants

Florczak B., Bogusz R., Skupiński W., Chmielarek M., Dzik A.

Central European Journal of Energetic Materials

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2015

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Vol. 12, no. 4

841--854

EN

This paper presents results from research concerning the effect of nitrated hydroxyl-terminated polybutadiene (NHTPB), content up to 3%, on the physicochemical, physico-mechanical and ballistic properties of heterogeneous rocket propellants based on hydroxyl-terminated polybutadiene (HTPB), ammonium perchlorate (AP) and aluminium powder. The results of research on the rheological and thermal properties of the tested solid rocket propellants are also presented. These studies have shown that 2% rubber NHTPB, contained within a composite solid propellant, increases the energy and ballistic parameters of the propellant.

5

Viscosity Testing of HTPB Rubber Based Pre-binders

Florczak B.

Central European Journal of Energetic Materials

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2014

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Vol. 11, no. 4

625--637

EN

This paper presents the test results of viscosity changes, versus time and temperature, for the HTPB rubber based pre-binders used in the manufacture of heterogeneous solid rocket propellants (HSRP). A Brookfield HADV-II+PRO viscometer with a small sample adapter (SSA) and SC4-18 spindle, including a TC-550SD water bath, was used for the tests. The components of the prebinders tested were: HTPB-K domestic liquid synthetic rubber, R45M rubber, dioctyl adipate as the plasticizer, diisocyanate curing agents (DDI, IPDI) and various additives: triethanolamine (TEA), iron compounds, lecithin, glycerine and a solution of oxalic acid in glycerine, and difunctional aziridine amide. As a result of these tests, it was found that the additives have an influence on the viscosity versus time dependence. Moreover, the influence of temperature on the viscosity changes with time were compared for HTPB-K domestic rubber and R45M rubber based pre-binders. The experimental equations describing these changes were also determined.