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Spectroscopic Characterization of Solid Rocket Motor Plume Radiation

Steffens, Lars and Gülhan, Ali (2022) Spectroscopic Characterization of Solid Rocket Motor Plume Radiation. HiSST: 2nd International Conference on High-Speed Vehicle Science Technology, 11.-15. Sept. 2022, Bruges, Belgium. (Submitted)

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Abstract

To gather information about both particle and gas phase temperatures inside a scaled solid rocket motor plume UV-VIS emission spectroscopy (UVVIS) and infrared emission pectroscopy (FTIR) have been used. Additionally, a position resolving two-color pyrometer technique in the visible spectrum range (Alumina Emission Measurements, AEM) has been developed to obtain a particle temperature distribution of the whole plume. These three methods have been applied during the ESA-EMAP project tests inside DLR’s VMK facility of scaled solid rocket motor plumes. This project pursued activities regarding the experimental modeling of alumina particulates in solid boosters (EMAP). The UVVIS emission spectroscopy can be used to monitor the grey body radiation of the particle phase. This allows determining the particle phase temperature. FTIR spectroscopy allows the identification of gaseous species inside the plume such as CO2, CO, HCL and H2O. The emission lines of HCl can be used to determine the gas phase temperature of the plume. Both methods thus monitor the radiation intensity and the temperature over time at a certain position downstream the nozzle exit during the propellant combustion process. The AEM consists of two optical cameras which have been equipped with 10nm width optical bandpass filters to obtain intensity maps at two distinct wavelengths. The ratio of these intensity maps can be evaluated into a temperature distribution of the plume.

Item URL in elib:https://elib.dlr.de/190519/
Document Type:Conference or Workshop Item (Speech)
Title:Spectroscopic Characterization of Solid Rocket Motor Plume Radiation
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Steffens, LarsUNSPECIFIEDhttps://orcid.org/0000-0002-2561-0687UNSPECIFIED
Gülhan, AliUNSPECIFIEDhttps://orcid.org/0000-0001-7460-0576UNSPECIFIED
Date:2022
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Submitted
Keywords:emission spectroscopy, solid rocket motor plume, particles
Event Title:HiSST: 2nd International Conference on High-Speed Vehicle Science Technology
Event Location:Bruges, Belgium
Event Type:international Conference
Event Dates:11.-15. Sept. 2022
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Köln-Porz
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Supersonic and Hypersonic Technology
Deposited By: Steffens, Lars
Deposited On:13 Dec 2022 14:53
Last Modified:13 Dec 2022 14:53

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