Development and Testing of the Laser System of Ignition of Rocket Engines
N. V. Pletnev1, N. B. Ponomarev2, G. A. Motalin2, V. F. Murashov2
1Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, 119991 Russia
2Keldysh Research Center, Moscow, 125438 Russia
Keywords: жидкостные ракетные двигатели, камера сгорания, горючее, окислитель, факел, запальник, воспламенитель, форсунки, лазерное зажигание, оптическая свеча, лазер, кварцевое волокно, liquid rocket engines, combustion chamber, fuel, oxidizer, flame, igniter, flash fuse, nozzles, laser ignition, optical candle, laser, quartz fiber
Abstract
This paper describes an experimental study pertaining to laser ignition of igniters of liquid rocket engines operating on such fuels as O2g + kerosene, O2g + ethanol, and O2g + H2g, and to how they ignite the fuel of a model combustion chamber. A quartz fiber based optical spark plug is described, which allows for multiple ignition of the igniter and the combustion chamber without replacing the spark plug. This study also touches upon possible types of pulsed lasers used in the laser ignition system, a fiber-optic laser igniter that remain insulated and efficient at a combustion chamber pressure of up to 10 MPa and more than 100 ignition cycles.
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