Inscrição na biblioteca: Guest
Portal Digital Begell Biblioteca digital da Begell eBooks Diários Referências e Anais Coleções de pesquisa
International Journal of Energetic Materials and Chemical Propulsion
ESCI SJR: 0.149 SNIP: 0.16 CiteScore™: 0.29

ISSN Imprimir: 2150-766X
ISSN On-line: 2150-7678

International Journal of Energetic Materials and Chemical Propulsion

DOI: 10.1615/IntJEnergeticMaterialsChemProp.2014008148
pages 169-191

DETERMINATION OF TOTAL SURFACE HEAT FLUX TO ABLATIVE INTERNAL INSULATORS IN SOLID ROCKET MOTORS VIA INVERSE HEAT CONDUCTION ANALYSIS

Heath T. Martin
The Pennsylvania State University, University Park, Pennsylvania, USA; The National Aeronautics and Space Administration, Marshall Space Flight Center, Huntsville, Alabama, USA
Ryan W. Houim
The Pennsylvania State University, University Park, PA 16802, USA
Matthew J. Degges
The Pennsylvania State University, University Park, Pennsylvania 16802, USA
Baoqi Zhang
Department of Mechanical and Nuclear Engineering The Pennsylvania State University, University Park, PA 16802 USA
Kenneth K. Kuo
Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802, USA

RESUMO

In assessing the performance of ablative internal insulators in solid rocket motors (SRMs), it is useful to measure the total surface heat flux incident on the insulators. The simplicity of this proposition, however, belies the challenges involved in performing such a measurement. Any device installed in an SRM is subjected to both high temperatures and heating rates; therefore, one challenge is the selection of a gauge material that can not only survive this environment intact, but also deliver accurate and reliable measurements while exposed to these harsh conditions. A second, and more problematic, difficulty is that of introducing the gauge into the SRM environment in a manner that is minimally invasive and will yield results that are an accurate representation of that environment. In this study, a total heat flux gauge using graphite as the sensor material was designed, fabricated, and tested. Multiple micro-thermocouples were embedded at different depths in the graphite sensor, and their recorded temperature histories were utilized in an inverse heat conduction analysis to deduce the total heat flux to and instantaneous temperature of the sensor surface. The gauge was employed in six subscale SRM firings performed for a study of ablative internal insulation. This heat-flux measurement technique proved to be both robust, producing useful results for 9 of 11 total installations, and accurate, with total uncertainty as calculated from quantifiable elemental uncertainties being no greater than 7% of the deduced flux.


Articles with similar content:

ASSESSMENT OF THE PERFORMANCE OF ABLATIVE INSULATORS UNDER REALISTIC SOLID ROCKET MOTOR OPERATING CONDITIONS
International Journal of Energetic Materials and Chemical Propulsion, Vol.16, 2017, issue 1
Kenneth K. Kuo, Heath T. Martin, Andrew C. Cortopassi
Food Consumption Rates in Marine Planktonic Copepods (a Review)
Hydrobiological Journal, Vol.38, 2002, issue 2
G. A. Finenko
AN ALGORITHM FOR INVERSE DETERMINATION OF THERMAL CONDUCTIVITY
ICHMT DIGITAL LIBRARY ONLINE, Vol.4, 2001, issue
Somchart Chantasiriwan
Preface: McMaster Research Highlights
Critical Reviews™ in Biomedical Engineering, Vol.44, 2016, issue 5
Markad V. Kamath, Hani Aodah Alzahrani
Thermal Protection Design for Flight Data Recorders
International Heat Transfer Conference 15, Vol.8, 2014, issue
Ri Li, Ruhul Amin Rana