Three-dimensional thermal-structural analysis of a swept cowl leading edge subjected to skewed shock-shock interference heatingA three-dimensional flux-based thermal analysis method has been developed and its capability is demonstrated by predicting the transient nonlinear temperature response of a swept cowl leading edge subjected to intense three-dimensional aerodynamic heating. The predicted temperature response from the transient thermal analysis is used in a linear elastic structural analysis to determine thermal stresses. Predicted thermal stresses are compared with those obtained from a two-dimensional analysis which represents conditions along the chord where maximum heating occurs. Results indicate a need for a three-dimensional analysis to predict accurately the leading edge thermal stress response.
Document ID
19900051357
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Polesky, Sandra P. (NASA Langley Research Center Hampton, VA, United States)
Dechaumphai, Pramote (NASA Langley Research Center Hampton, VA, United States)
Glass, Christopher E. (NASA Langley Research Center Hampton, VA, United States)
Pandey, Ajay K. (Lockheed Engineering and Sciences Co. Hampton, VA, United States)