نتایج جستجو برای: propellants

تعداد نتایج: 808  

Journal: :Journal of Chemistry 2021

The nanosized powders have gained attention to produce materials exhibiting novel properties and for developing advanced technologies as well. Nanosized exhibit substantially favourable qualities such improved catalytic activity, augmentation in reactivity, reduction melting temperature. Several researchers pointed out the influence of ultrafine aluminium (∼100 nm) nanoaluminium (<100 on bur...

Journal: :European review for medical and pharmacological sciences 1999
C Terzano

Easy to carry, highly effective and extremely safe, allowing accurate, consistent dose delivery, metered dose inhalers are the inhalation devices doctors and patients choose most readily the world over. Clinical response, however, may be affected by the inhalation technique used and the precise formulation in the canisters. The purpose of this review is to consider metered dose inhalers, add on...

Journal: :African Journal of Pure and Applied Chemistry 2021

Journal: :Propellants, Explosives, Pyrotechnics 2022

In order to improve nano-aluminized solid propellant properties and performance, different materials are being investigated for coating nano-aluminum particles. Two of the powders which considered V-ALEX, a fluoropolymer (Viton) coated nano-aluminum, L-ALEX, stearic acid nano-aluminum. It is believed that thin layer should protect aluminum core from premature oxidation, as well provide an exoth...

Journal: :Trends in chemistry 2022

Establishing human habitation on the Moon or Mars requires development of a palette interconnected reaction chemistries to transform their native soils into structural metals, fuels, propellants, and load-bearing forms. This article outlines key research needs relevant fundamental chemistry in situ resource utilization.

Journal: :Energies 2021

The combustion characteristics of a staged cycle engine with an oxidizer-rich preburner were experimentally studied at different momentum ratios multi-element injectors. Propellants simultaneously supplied as liquid–liquid–liquid system, and injector was designed in which swirl coaxial jet is sprayed. burned the propellants inner chamber had temperature greater than 2000 K. To cool gas, liquid ...

ژورنال: مواد پرانرژی 2014

Glycidyl Azide Polymer is one of the most important energetic binders that is used in the composite solid propellant formulation. GAP is a unique binder with a positive heat of formation (+117.2 kJ⁄mol). In addition, GAP has good thermal and physical properties such as low glass transition temperature, low viscosity and high density compared to other energetic binders. GAP can be used as a bin...

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