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International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Print: 2150-766X
ISSN Online: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.v6.i2.50
pages 197-212

EXAMINATION OF AP/KN COMPOSITE PROPELLANT THERMAL WAVE STRUCTURE UNDER STEADY-STATE BURNING

Vladica S. Bozic
Ministry of Environmental Protection, Omladinskih brigada 1, Novi Beograd, 11070, Serbia
Marko V. Milos
Faculty of Mechanical Engineering, University of Belgrade, Kraljice Marije 16, 11120 Belgrade 35
D. D. Blagojevic
Faculty of Mechanical Engineering, 27 marta 80, 11000 Belgrade, Serbia and Montenegro
Boris S. Jankovski
Veda, Aleksandar Martukov 45, 1000 Skopje, Macedonia

ABSTRACT

A formulation of composite propellant based on modified PVC binder has been produced, such that part of the ammonium perchlorate has been replaced with potassium nitrate. This resulted in improved environment behavior at the expense of unusual changes in burning rate at different pressures, with alarmingly high-pressure exponent during burning at pressures over 2 MPa. The aim of this investigation is to examine processes in the combustion wave near the burning surface during combustion. A technique based on fine-wire thermocouples embedded in the propellant has been used to accomplish precision measurement of temperature profiles through the entire flame zone of the solid propellants. This paper reports the technique and measurement results.