Estimation of ammonium perchlorate in HTPB based composite solid propellants using Kjeldahl method

1996 ◽  
Vol 21 (1) ◽  
pp. 51-53 ◽  
Author(s):  
A. G. Ajaz
Keyword(s):  
Ammonium Perchlorate ◽  
Solid Propellants ◽  
Composite Solid Propellants ◽  
Kjeldahl Method ◽  
Composite Solid

Biosynthesized NiO nanoparticles: Potential catalyst for ammonium perchlorate and composite solid propellants

2015 ◽  
Vol 41 (1) ◽  
pp. 1573-1578 ◽  
Author(s):  
J.K. Sharma ◽  
Pratibha Srivastava ◽  
Gurdip Singh ◽  
M. Shaheer Akhtar ◽  
S. Ameen
Keyword(s):  
Ammonium Perchlorate ◽  
Solid Propellants ◽  
Nio Nanoparticles ◽  
Composite Solid Propellants ◽  
Composite Solid

Oxygen vacancy enriched Cu-WO3 hierarchical structure for thermal decomposition of ammonium perchlorate

2021 ◽  
Author(s):  
Jing Shi ◽  
Xiangying Xing ◽  
Huixiang Wang ◽  
Lin Ge ◽  
Haizhen Sun ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Oxygen Vacancy ◽  
Ammonium Perchlorate ◽  
Hierarchical Structure ◽  
Solid Propellants ◽  
Composite Solid Propellants ◽  
Composite Solid

The design and fabrication of efficient catalysts for ammonium perchlorate (AP) decomposition is crucial to the performance of composite solid propellants. Herein, a novel hierarchical structure material of Cu-WO3 nanowire...

Nano Additives and Plateau Burning Rates of Ammonium-Perchlorate-Based Composite Solid Propellants

2009 ◽  
Vol 25 (5) ◽  
pp. 1068-1078 ◽  
Author(s):  
Matthew A. Stephens ◽  
Eric L. Petersen ◽  
David L. Reid ◽  
Rodolphe Carro ◽  
Sudipta Seal
Keyword(s):  
Ammonium Perchlorate ◽  
Solid Propellants ◽  
Composite Solid Propellants ◽  
Burning Rates ◽  
Nano Additives ◽  
Composite Solid

scholarly journals Encapsulation of Oxidizers: Efficient Method by Spout-fluid Bed

2020 ◽  
pp. 23-26
Author(s):  
Jessica de Oliveira Silva ◽  
Josiane Ribeiro Campos Silva ◽  
Lucas Barros de Oliveira ◽  
Marcio Yuji Nagamachi ◽  
Luiz Fernando de Araujo Ferrão ◽  
...  
Keyword(s):  
Ammonium Perchlorate ◽  
Protective Coating ◽  
Efficient Method ◽  
Coating Layer ◽  
Inorganic Salts ◽  
Solid Propellants ◽  
Fluid Bed ◽  
Before And After ◽  
Composite Solid Propellants ◽  
Composite Solid

In composite solid propellants, the oxidizer in the form of particles is embedded in a polymeric matrix. In general, these oxidizers consist in inorganic salts that are hygroscopic, chemically incompatible or sensitive to friction or impact, so that microencapsulation can be applied as a mean to provide a protective coating layer. This work aims to assess the effectiveness of the spout-fluid bed method to perform microencapsulation of ammonium perchlorate particles with acrylic-based resin. The formed coating integrity was assessed by an optical stereomicroscope for samples with one, two and four layers of coating before and after dissolving the cores in water. The parameters utilized in this method provided a complete and individualized encapsulation with sufficient integrity. Therefore, the spout-fluid bed method proved to be effective, particularly with the application of multiple layers.

scholarly journals Study on Friction Sensitivity of Passive and Active Binder based Composite Solid Propellants and Correlation with Burning Rate

2020 ◽  
Vol 70 (2) ◽  
pp. 159-165
Author(s):  
Ehtasimul Hoque ◽  
Chandra Shekhar Pant ◽  
Sushanta Das
Keyword(s):  
Burning Rate ◽  
Ammonium Perchlorate ◽  
Influential Factors ◽  
Solid Propellants ◽  
Test Results ◽  
Nitrate Esters ◽  
Composite Solid Propellants ◽  
Burn Rate ◽  
Friction Sensitivity ◽  
Composite Solid

   Friction sensitivity of composite propellants and their ingredients is of significant interest to mitigate the risk associated with the accidental initiation while processing, handling, and transportation. In this work, attempts were made to examine the friction sensitivity of passive binder: Hydroxy Terminated Polybutadiene/Aluminium/Ammonium Perchlorate and active binder: (Polymer + Nitrate Esters)/Ammonium Perchlorate/Aluminium/Nitramine based composite propellants by using BAM Friction Apparatus. As per the recommendation of NATO standard STANAG–4487, the friction sensitivity was assessed by two methods: Limiting Frictional load and Frictional load for 50% probability of initiation (F50). The test results showed that the active binder based formulations were more vulnerable to frictional load as compared to the formulations with passive binders. Examination of a comprehensive set of propellant compositions revealed that the particle size distribution of Ammonium Perchlorate and burn rate catalysts were the most influential factors in dictating the friction sensitivity for HTPB/Al/AP composite propellants. For active binder/AP/Al/Nitramine composite propellants, the formulation with RDX was found more friction sensitive with a sensitivity value of 44 N as compared to its HMX analog (61 N). The correlation studies of friction sensitivity, burning rate, and thermal decomposition characteristics of HTPB/Al/AP composite propellants is described.

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