Influence of optical properties of alumina particles on the radiative base heating from solid rocket plume

Ko, Ju Yong; Lee, Euntaek; Kwon, Sejin

doi:10.1016/j.asr.2019.04.024

Cited by 6 publications

(4 citation statements)

References 25 publications

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“…During SRM operation, the temperature in the combustion chamber can reach temperature values up to 3800 K and pressures of 10 MPa. The combustion of aluminum produces micron-sized condensed phase particles that have an impact on internal flow and heat transfer, with two-phase flow losses, particles erosion, and radiative heating [10].…”

Section: Optical and Radiative Properties Of Alumina Particlesmentioning

confidence: 99%

“…In [10], the effect of the particle number density on the plume radiative properties, i.e., the absorption and scattering coefficients, was evaluated. The absorption and scattering coefficients were calculated using the estimated absorption index k ( [11,15]) and the refractive index n ( [15,24]).…”

Section: Optical and Radiative Properties Of Alumina Particlesmentioning

confidence: 99%

“…Absorption coefficient (on the left) and scattering coefficient (on the right) for different alumina particle diameters. Reprinted with permission from[10,11,15].…”

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confidence: 99%

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Optical Diagnostics for Solid Rocket Plumes Characterization: A Review

et al. 2022

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In recent decades, solid fuel combustion propulsion of spacecraft has become one of the most popular choices for rocket propulsion systems. The reasons for this success are a wide range of applications, lower production costs, simplicity, and safety. The rocket’s plumes leave the nozzle at high temperatures; hence, the knowledge of produced infrared (IR) emissions is a crucial aspect during the design and tests of the rocket motors. Furthermore, rocket plume composition is given by N2, H2, H2O, CO and CO2, while solid rocket motors (SRM) additionally inject some solid particles, given by metal fuel additives in the propellant grain, i.e., aluminum oxide (Al2O3) particles. The main issue is the detection of the particles remaining in the atmosphere due to the exhaust gas of the solid rocket propulsion system that could have effects on ozone depletion. The experimental characterization of SRM plumes in the presence of alumina particles can be conducted using different optical techniques. The present study aims to review the most promising ones with a description of the optics system and their potential applications for SRM plume measurements. The most common measurement techniques are infrared spectroscopy imaging, IR imaging. UV–VIS measurements, shadowgraph, and Schlieren optical methods. The choice of these techniques among many others is due to the ability to study the plume without influencing the physical conditions existing in and around the study object. This paper presents technical results concerning the study of rocket engines plumes with the above-mentioned methods and reveals the feasibility of the measurement techniques applied.

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Section: Optical and Radiative Properties Of Alumina Particlesmentioning

confidence: 99%

Section: Optical and Radiative Properties Of Alumina Particlesmentioning

confidence: 99%

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Optical Diagnostics for Solid Rocket Plumes Characterization: A Review

et al. 2022

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“…For the sake of simplification, let's say that photons are the energy-carrying particles that make up electromagnetic waves. With spectroscopy, may use the fact that an object's energy level rises after being hit by a stream of photons [10]. If a sample absorbs a photon.…”

Section: Introductionmentioning

confidence: 99%

A Promising Comprehensive Optical System Design and Fabrication for Solid-Fuel Characterization of the Missiles Engines

marouf,

Bakheit,

Altayeb

et al. 2023

Aswan University Journal of Sciences and Technology

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In this paper, present a unique model of a comprehensive spectrograph Systems. the proposed optical system evaluates the performance of solid fuel columns SFC on the basis of spectroscopy, when they are fully combusted and exit the exhaust nozzle of a solid rocket fuel engine SRFE. By collecting and spectroscopic analysis of the radiation emitted by waste chemical compounds in the infrared, visible and ultraviolet ranges. The proposed spectroscopy system design features several optical systems specifically designed for performing spectroscopic measurements remotely. To take into account security and safety. The proposed optical system addresses many of the defects of the traditional systems used in this field. Such as not need to take a sample in a gas cell, like the case in the FTIR technique, and not to be affected by the surrounding environment from radioactive sources, like the case in the spectroscopy technique using visible and ultraviolet light radiation. There is a distinctive optical system for the thermal camera to prevent radiation sources resulting from existing reflections in the test environment, the synchronization time in fast cameras is 15 microseconds, which makes the 3D image formation algorithms work to create an ideal image, thus overcoming the defects of the digital inline holography system.

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Radiative properties of alumina/aluminum particles and influence on radiative heat transfer in solid rocket motor

Hao

Hou

2022

Chinese Journal of Aeronautics

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Influence of optical properties of alumina particles on the radiative base heating from solid rocket plume

Cited by 6 publications

References 25 publications

Optical Diagnostics for Solid Rocket Plumes Characterization: A Review

Optical Diagnostics for Solid Rocket Plumes Characterization: A Review

A Promising Comprehensive Optical System Design and Fabrication for Solid-Fuel Characterization of the Missiles Engines

Radiative properties of alumina/aluminum particles and influence on radiative heat transfer in solid rocket motor

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