A Study on Nozzle Structure Analysis about thermal stress effect Associated with Nozzle Thickness in Rocket

로켓 노즐의 두께 변화에 대한 열응력 구조해석

  • 소정수 (한국항공대학교 항공우주 및 기계공학과) ;
  • 도규성 (한국항공대학교 항공우주 및 기계공학과) ;
  • 장윤제 (한국항공대학교 항공우주 및 기계공학부) ;
  • 송승호 (한국항공대학교 항공우주 및 기계공학부) ;
  • 한정수 (한국항공대학교 항공우주 및 기계공학부) ;
  • 문희장 (한국항공대학교 항공우주 및 기계공학부)
  • Published : 2008.06.30

Abstract

This paper describes the performance characteristics of flow and structure in the post-chamber and nozzle. Using the computational fluid dynamics (CFD) technique, the stress and compressible flow fields in the downstream of the post chamber and nozzle were numerically calculated. Besides, the stress characteristics at the wall of post-chamber and nozzle were investigated under different thickness (2mm, 5mm and 10mm) of the nozzle wall. The stress pattern demonstrates that the strength of nozzle wall having 10mm is safer than that of 5mm or 2mm according to von Mises stress irrespective to the pressure field

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