Effect of Distributed Injection of Air into the Afterburning Chamber of a Ram-Rocket Engine on the Efficiency of Combustion of Boron Particles
S. A. Rashkovskii1, Yu. M. Milekhin2, A. V. Fedorychev2
1Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences, Moscow, 119526 Russia
2Federal Center for Dual-Use Technologies “Soyuz”, Dzerzhinskii, 140090 Rissia
Keywords: ракетно-прямоточный двигатель, частицы бора, горение, полнота сгорания, распределенный подвод воздуха, ram-rocket engine, boron particles, combustion, combustion efficiency, distributed injection of air
Abstract
A mathematical model of combustion of boron particles in a ram-rocket engine is developed. The boron combustion efficiency for one-stage and two-stage injection of air into the afterburning chamber is calculated. It is demonstrated that two-stage injection of air sometimes allows the time of complete combustion of boron particles to be significantly reduced (by a factor of 1.5-3); thus, the fuel combustion efficiency in the ram-rocket engine can be increased. The simulated results are consistent with available experimental data.
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