Advanced Reentry Aeromechanics.
Scientific interim rept.,
PHYSICAL SCIENCES INC WAKEFIELD MASS
Pagination or Media Count:
This interim report summarizes the results of a research program addressing various aspects of high performance re-entry nosetip technology. A theoretical model for turbulent boundary layers has been developed for prediction of boundary layer transition and turbulent heating rates in nosetip shape change studies. Detailed analyses of several aspects of low speed turbulent boundary layers are presented, as well as initial results for high speed compressible flows. For erosion applications, models are constructed for the dynamic, mechanical, and thermal response of an ice crystal to a hypervelocity shock layer. A two-layer heat transfer analysis shows that there is an appreciable range of crystal sizes which experiences significant mass loss. Mechanical failure of ice crystals is shown to be likely at typical re-entry conditions, and the failure modes are outlined. Modified author abstract
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