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FLAME SPREADING OVER SOLID ROCKET PROPEL-LANTS DURING IGNITION TRANSIENT
Dragan Lemić
Flame spreading is a very important phase of solid propellant rocket motor ignition transient. During surface growth then causes the greatest change of motor chamber parameters. Flame spreading is influenced by heat transfer, solid rocket propellant ignition mechanism, pressure, flow velocity and oxidizer concentration in ambient gas. There is a great difference in the mechanism and the flame propagation rate between solid rocket motors with head-end ignition and aft-end ignition. The convective heat transfer from igniter combustion products and already ignited parts of grain to the rest of the exposed burning surface especially increases flame spreading velocity, up to a few hundreds m/s.
Ključne reči: Solid propellant rocket motor, solid rocket propellant, flame spreading, ignition, ignition transient. |