Science and Technology of Energetic Materials

Vol.70, No.6 (2009)

Research paper

A laser heating method for estimating the thermal balance of burning solid propellants
Akira Kakami, Shota Terashita, and Takeshi Tachibana


This paper proposes a method to apply laser heating to solid propellant combustion in order to evaluate the heat feedback rate from flame to burning surface, Hf. A burning surface was irradiated with a laser in a pressure-regulated test chamber. From a simple heat balance model on the burning surface, the burning rate was dependent on the laser power density, and the values of Hf were determined using the dependence. HTPB/AP based solid propellant samples were irradiated at laser power densities ranging from 0.3 to 0.8 W mm-2.The experiments showed that the burning rate increased with the laser power density and that Hf values were successfully evaluated and were almost monotonously augmented with back pressure and ranged from 1.0 to 2.0 W mm-2.

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Solid propellant, Combustion, Heat feedback rate, Laser

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