THERMAL CHARACTERIZATION OF ASSEMBLED PROPELLANT INCREMENTS EXPOSED TO DISCRETE THERMAL ENVIRONMENTS

Kenneth D. Blecker, Hamid Hadim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The purpose of this study is to characterize the thermal response of assembled propellant increments exposed to a variety of thermal environments and packaging conditions. The temperature distribution and bulk temperature of the propellant within the increment directly influence the burn rate and resulting pressure profile. The burn rate and pressure profile directly impact the range and stability of the munition which can result in a safety hazard if not properly accounted for. In this study first a numerical model is developed and then this numerical model is used to make a determination of whether a surface temperature measure or series of surface temperature measurements can be used to approximate or estimate the bulk propellant temperature. The numerical model accounts for variable thermal solar loading, various packaging configurations, and orientation. The results indicate that the temperature response of the assembly is influenced by both configuration and assembly. The increment notch orientation also has a significant impact on results. Orientation of the increment can also affect the maximum temperature response and care should be given to determine the heating conditions if the highest temperature exposure needs to be identified. Natural convection is relatively weak and both the small cavity size and slow temperature change drive this condition.

Original languageEnglish
Title of host publication5th-6th Thermal and Fluids Engineering Conference, TFEC 2021
Pages345-351
Number of pages7
ISBN (Electronic)9781567005172
DOIs
StatePublished - 2021
Event5th-6th Thermal and Fluids Engineering Conference, TFEC 2021 - Virtual, Online
Duration: 26 May 202128 May 2021

Publication series

NameProceedings of the Thermal and Fluids Engineering Summer Conference
Volume2021-May
ISSN (Electronic)2379-1748

Conference

Conference5th-6th Thermal and Fluids Engineering Conference, TFEC 2021
CityVirtual, Online
Period26/05/2128/05/21

Keywords

  • Multimode heat transfer
  • Numerical heat transfer
  • Propellant
  • Thermal characterization

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