Effect of Secondary Combustion on Thrust Regulation of Gas Generator Cycle Rocket Engine

被引:0
|
作者
Khan, Sohaib [1 ]
Sohail, Muhammad Umer [2 ,3 ]
Qamar, Ihtzaz [2 ,3 ]
Tariq, Muzna [4 ]
Swati, Raees Fida [2 ,3 ]
机构
[1] Inst Space Technol, Dept Aeronaut & Astronaut Engn, Islamabad 44000, Pakistan
[2] Inst Space Technol, Fac Aeronaut, Islamabad 46000, Pakistan
[3] Inst Space Technol, Astronaut Engn Dept, Islamabad 46000, Pakistan
[4] Inst Space Technol, Dept Aeronaut & Astronaut, Researcher Assistant Rocket Prop Lab, Islamabad 44000, Pakistan
来源
APPLIED SCIENCES-BASEL | 2022年 / 12卷 / 20期
关键词
thrust regulation; secondary combustion; gas generator; liquid propellant rocket engine; chemical equilibrium; combustion modeling; PROPELLANT; PERFORMANCE;
D O I
10.3390/app122010563
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Thrust regulation is applied to maintain the performance of the liquid propellant rocket engine. The thrust level of a rocket engine can be readily controlled by adjusting the number of propellants introduced into the combustion chamber. In this study, a gas generator design is proposed in which thrust regulation is maintained by performing secondary combustion in the divergent section of the nozzle of a gas generator. Tangential and normal injection techniques have also been studied for better combustion analyses. A normal injection technique is used for the experiment and CFD results are validated with the experimental data. Chemical equilibrium analyses are also performed by minimizing Gibbs free energy with the steepest descent method augmented by the Nelder-Mead algorithm. These equilibrium calculations give the combustion species as obtained through the CFD results. Performance evaluation of the rocket engine, with and without secondary combustion in the gas generator, led to an increase of 42% thrust and 46.15% of specific impulse with secondary combustion in the gas generator.
引用
收藏
页数:23
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