UGC Approved Journal no 63975(19)

ISSN: 2349-5162 | ESTD Year : 2014
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Published in:

Volume 9 Issue 6
June-2022
eISSN: 2349-5162

UGC and ISSN approved 7.95 impact factor UGC Approved Journal no 63975

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Published Paper ID:
JETIR2206995


Registration ID:
405297

Page Number

j756-j770

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Title

SOLID PROPELLANT BURN RATE ENHANCEMENTS WITH VARIOUS GRAIN CONFIGURATIONS

Abstract

Solid propellants are one of those rocket motor fuels which are widely used in gun and rocket propulsion applications. They are energetic and produce high temperature gaseous products on combustion. The energy produced by a unit volume of a propellant is called its energy density. The high material density of solid propellants lead to high energy density needed for producing the required propulsive forces. A solid propellant consists of several chemical ingredients such as oxidizer, fuel, binder, plasticizer, curing agent, stabilizer and cross-linking agents. Different grain sizes and different propellant grain configurations are available for improving the impulse of solid propellant rocket motors. Chemical ingredients and their proportions results in different physical, chemical properties, internal ballistic properties, mechanical, thermal, storage, stability properties, hazard properties and combustion properties. Better selection criterion of propellant is a challenge at present state of art for the solid rocket motor designer that enhances the mission performance. Sometimes solid propellants may burn suddenly and some moments it may fail due to lack of oxidizer and other ingredients. Most of the composite propellant compositions contain solid loading up to 86%. The main solid ingredients of composite propellant are ammonium perchlorate and aluminium powder. Therefore it is must characterize these to improve process ability and quality of composite propellant. Effect of oxidizer percentage in composite ballistic properties and parameters are well determined in literature. In the present study oxidizer percentage, burn rate, catalyst and oxidizer to fuel ratio influences the property characterization are discussed. The data obtained from the experiments will be help full to evaluate some of the propellant characteristics mentioned as challenges. Strand burner test is conducted to determine the propellant burning rate. This approach is based on strand burner pressure–time history that is related to the temperature change due to exothermic reaction heating of chamber gases and gas addition to the chamber by propellant combustion products. Calculated burning rates were compared with the experimental wire-break time results provided simultaneously and with the propellant manufacturer's results, when available. 3 Different grain configurations have been modeled and tested for burn rate measurements. The comparisons reveal that the approach has merit and that more accurate pressure determination coupled with additional thermo chemical information and strand burner gas temperature measurements has the potential to make this approach a viable technique and one that can be applied in conjunction with other burning rate measurements. The proposed method is similar to a well-developed technique which is commonly applied to ballistic powders but with adjustments for the differences in geometry, pressure, and time of event.

Key Words

Solid Propellant, Burn rate, Coefficient Of Pressure, Ammonium Perchlorate, Hydroxyl Terminated Poly Butadiene, Ammonium Nitrite, Total Pressure Loss Coefficient

Cite This Article

"SOLID PROPELLANT BURN RATE ENHANCEMENTS WITH VARIOUS GRAIN CONFIGURATIONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.9, Issue 6, page no.j756-j770, June-2022, Available :http://www.jetir.org/papers/JETIR2206995.pdf

ISSN


2349-5162 | Impact Factor 7.95 Calculate by Google Scholar

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 7.95 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Cite This Article

"SOLID PROPELLANT BURN RATE ENHANCEMENTS WITH VARIOUS GRAIN CONFIGURATIONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.9, Issue 6, page no. ppj756-j770, June-2022, Available at : http://www.jetir.org/papers/JETIR2206995.pdf

Publication Details

Published Paper ID: JETIR2206995
Registration ID: 405297
Published In: Volume 9 | Issue 6 | Year June-2022
DOI (Digital Object Identifier):
Page No: j756-j770
Country: Vijayawada/Krishna District, Andhra Pradesh, India .
Area: Engineering
ISSN Number: 2349-5162
Publisher: IJ Publication


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