آثار به کارگیری نانوذرات در پیشرانه های جامد مرکب
Authors
Abstract:
Composite solid propellants are materials that constitute from an oxidizer, an organic binder, a metallic fuel, additives and etc. Nowadays the size of energetic particles is attended because of their functional profits. Size reduction is well known way to increasing reactivity of additives in propellant formulations. Nanoparicles have considerable effects on composite solid propellants properties due to their high surface area to volume ratio. The results of using of nanoparticles in composite solid propellants include increase of burning rate, ignition delay shortening, burning quality improvement, decomposition temperature decreasing, viscosity increasing and various effects on mechanical and sensitivity properties.
similar resources
پیشرانه جامد مرکب پرانرژیNEPE(علمی-ترویجی)
Nitrate ester plasticized polyether (NEPE) is a new generation of composite solid propellants which its high energy content in comparing with conventional formulations, has attracted many researchers in the defense departments, all over the world. First of all an introduction and history and importance of NEPE propellants will be discussed and formulation and combination of propellants componen...
full textپیشبینی ناپایداری احتراق در موتورهای پیشرانه جامد مرکب
The occurrence of any oscillation and turbulence in the combustion chamber pressure exits the combustion stability conditions. The range of these fluctuations depends on productive operating conditions and is always undesirable, even if they do not have explosion and destruction effects. In this paper, while investigating the process of combustion solid propellant combustion phenomenon and its ...
full textارزیابی اثر پارامترهای مختلف بر روی پدیده کوهانی شدن در پیشرانه-های جامد مرکب
By comparing the empirical and predicted performance diagrams of the composite solid propellants, it appears that there is a discrepancy between these two graphs .This deviation has been attributed to spatial burning rate variation which is related to burning rate fluctuation or hump effect. The most important reasons for this spatial burning rate variation are casting process. In order to appr...
full textمروری بر روش های بهبود خواص مکانیکی پیشرانه های جامد مرکب بر پایه GAP (علمی-ترویجی)
GAP propellants has good performance due to high energy of this polymer. Unfortunately, due to poor flexibility of GAP polymer and presence of rigid and conjugated azide side groups in its structure, they have poor mechanical properties especially under low temperatures. This article deals with methods of improving mechanical properties of solid composite propellants based on GAP through changi...
full textروشهای بهبود پراکنش نانوذرات در فرمولاسیون پیشرانههای جامد مرکب
Using of nanoparticles in Composite solid propellant formulations has extended in recent years. Nano additives increases burning rate of these formulations and consequently improves performance, because of their high reactivity potential, high catalytic activity and high surface area to volume ratio. However, poor dispersibility of nanoparticles leads to agglomeration in the binder and thus r...
full textMy Resources
Journal title
volume 11 issue 1
pages 31- 42
publication date 2015-09
By following a journal you will be notified via email when a new issue of this journal is published.
No Keywords
Hosted on Doprax cloud platform doprax.com
copyright © 2015-2023