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Burning behaviour with respect to initial grain temperature: Stojan Vessel in comparison with subscale rocket motor

Autoři: Maraden Ahmed Mohamed Ali | Stojan Petr | Matyáš Robert

Rok: 2017

Druh publikace: ostatní - článek ve sborníku

Název zdroje: Proceedings of the The 6th International Symposium on Energetic Materials and their Application (ISEM2017)

Název nakladatele: Japan Explosives Society

Místo vydání: Tokyo

Strana od-do: nestránkováno

Tituly:

Jazyk	Název	Abstrakt	Klíčová slova
eng	Burning behaviour with respect to initial grain temperature: Stojan Vessel in comparison with subscale rocket motor	The initial propellant grain temperature of solid propellants is one of the most important factors that directly affect the burning rate of the rocket motor. It can also influence the initiation and ignition of the roket motor. Practical investigation of the impact of initial grain temperature on ballistic properties of extruded double base propellant has been carried out. Burning rate of two double base propellant compositions was measured in both clossed vessel and subscale rocket motor. The propellant burning rate was measured as a function of pressure and initial temperature. Results obtained from constant volume clossed vessel are confirmed by comparing with burning rate measurements using traditional subscale rocket motor. Measurements of burning rate were performed at different initial grain temperatures. Temperature variation was from – 60 C to + 60 C for subscale rocket motor and form -20 C to + 40 C for clossed vessel. Heating and cooling processes of propellants to desired temperatures were performed in controlled devices for twenty four hours before testing. It is concluded that the ignitability, the burning rate and operating pressure increase with increasing the initial grain temperature while the time needed for ignition process and action time were shortened.	Double base propellant; burning rate; temperature effect; subscale motor

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