Visualization of Flow Dynamics in the Post Chamber of Hybrid Rocket using Chemiluiminescence Images

Choi, Goeun; Moon, Young Joo; Lee, Changjin

doi:10.2514/6.2015-3827

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Cited by 3 publications

References 12 publications

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The decoupled effect of oxidizer mass flux and combustion pressure on turbulent combustion characteristics of finite-length solid fuel

Xia,

Wang,

Pang

et al. 2024

Aerospace Science and Technology

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The decoupled effect of oxidizer mass flux and combustion pressure on turbulent combustion characteristics of finite-length solid fuel

Xia,

Wang,

Pang

et al. 2024

Aerospace Science and Technology

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Flame Dynamics in the Combustion Chamber of Hybrid Rocket Using Multiangle Chemiluminescence

Luo¹,

Zhang²,

Lin³

et al. 2023

Journal of Propulsion and Power

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The flame dynamics in the combustion chamber of a hybrid rocket motor were visualized using novel chemiluminescence imaging. A multidirectional visualization system employing [Formula: see text] endoscopes generated images based on methylidyne chemiluminescence (CH*), with one endoscope in the precombustion chamber and two in the postcombustion chamber. Images were collected with a high-speed camera using a 1 ms exposure and a 1 kHz frame rate. Fuel grains having a helical or a conventional circular port structures were assessed, and combustion trials were conducted using a laboratory-scale hybrid rocket motor with oxygen as the oxidizer at mass flow rates from 10.43 to [Formula: see text]: equivalent to combustion chamber pressures ranging from 0.7 to 1.24 MPa. Flame structures were observed during the ignition, combustion, and shutdown stages; and the helical grain generated a larger, more intense flame zone. A proper orthogonal decomposition analysis showed that the helical grains also produced a greater degree of turbulence and stronger oscillations. These results confirm that a helical structure increases the flow turbulence and convective heat transfer in the combustion chamber. These effects lead to higher regression rates and better mixing efficiency that may, in turn, provide greater combustion efficiency at optimized oxidizer/fuel ratios.

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Pressure Oscillation and Combustion in Shear Layer of Hybrid Rocket Post Chamber

Moon¹,

Lee²

2016

52nd AIAA/SAE/ASEE Joint Propulsion Conference

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Visualization of Flow Dynamics in the Post Chamber of Hybrid Rocket using Chemiluiminescence Images

Cited by 3 publications

References 12 publications

The decoupled effect of oxidizer mass flux and combustion pressure on turbulent combustion characteristics of finite-length solid fuel

The decoupled effect of oxidizer mass flux and combustion pressure on turbulent combustion characteristics of finite-length solid fuel

Flame Dynamics in the Combustion Chamber of Hybrid Rocket Using Multiangle Chemiluminescence

Pressure Oscillation and Combustion in Shear Layer of Hybrid Rocket Post Chamber

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