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REPUBLIC OF SERBIA MINISTRY OF DEFENCE
MINISTRY OF DEFENCE Material Resources Sector Defensive Technologies Department
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Initial Changes of Composite Propellant Mechanical Properties
Nikola GLIGORIJEVIĆ Military Technical Institute, Belgrade, nikola.gligorijevic@gmail.com MohammEd MAOUCHE, Military Academy, University of Defence, Belgrade, Master student, mido269@hotmail.fr ASSIA TABOUCHE Military Academy, University of Defence, Belgrade, Master student, assia.tabouche@yahoo.com CHAWKI TENNACHE Military Academy, University of Defence, Belgrade, Master student, mino.persie@yahoo.fr SAŠA ŽIVKOVIĆ Military Technical Institute, Belgrade, sasavite@yahoo.com SREDOJE SUBOTIĆ Military Technical Institute, Belgrade, sredoje.subotic@gmail.com VESNA RODIĆ Military Technical Institute, Belgrade, vesna_rodic@vektor.net
Abstract: Propellant modulus increases up to 200% and allowable strain decreases below 50% of its initial value. Ultimate stress, modulus and allowable strain values for the virgin propellant are necessary for monitoring the production quality and comparison of different compositions or batches. Moreover, their time distributions after production are necessary for propellant grain structural analysis. Short time aging must be acounted for the evaluation of reliability and rocket motor service life. Keywords: Composite, Propellant, Mechanical properties, Structural analysis, Aging, HTPB, Stress, Strain, Modulus.
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