نتایج جستجو برای: propellants
تعداد نتایج: 808 فیلتر نتایج به سال:
The term "aerosol" has a precise scientific definition as liquid or solid particles suspended in air [1], but has in the last few decades acquired a new non-scientific meaning as a self-contained, sprayable product in which the propellant force is supplied by liquefied gas [2]. The propellants used in these aerosol canisters are of several types, namely: a) chlorofluorocarbons (CFCs); b) hydroc...
Abstract Since the first synthesis of 2,6-diamino-3,5-dinitropyrazine-1-oxide (LLM-105) in Lawrence Livermore National Laboratory (LLNL) America 1993, efforts investigation into LLM-105 have never ended due to its premium performance. Therefore, with goal further emphasize importance this material and provide reference application propellants explosives, properties performance are briefly intro...
A fuel-free autonomous self-propelled motor is illustrated. The motor is powered by the chemistry of calcium carbide and utilising water as a co-reactant, through a polymer encapsulation strategy. Expulsion of acetylene bubbles powers the capsule motor. This is an important step, going beyond the toxic hydrogen peroxide fuel used normally, to find alternative propellants for self-propelled mach...
Complexation of amines with borane converts them to hypergols or decreases their ignition delays (IDs) multifold (with white fuming nitric acid as the oxidant). With consistently low IDs, amine-boranes represent a class of compounds that can be promising alternatives to toxic hydrazine and its derivatives as propellants. A structure-hypergolicity relationship study reveals the necessary feature...
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