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Flowfield Analysis of a Small Entry Probe (SPRITE) Tested in an Arc JetResults of simulations of flow of an arc-heated stream around a 14-inch diameter 45 sphere-cone configuration are presented. Computations are first benchmarked against pressure and heat flux measurements made using copper slug calorimeters of different shapes and sizes. The influence of catalycity of copper on computed results is investigated. Good agreements between predictions and measurements are obtained by assuming the copper slug to be partially catalytic to atomic recombination. With total enthalpy estimates obtained from these preliminary computations, calculations are then performed for the test article, with the nozzle and test article considered as an integrated whole the same procedure adopted for calorimeter simulations. The resulting heat fluxes at select points on the test article (points at which fully instrumented plugs were placed) are used in material thermal response code calculations. Predicted time histories of temperature are compared against thermocouple data from the instrumented plugs, and recession determined. Good agreement is obtained for in-depth thermocouples.
Document ID
20120006604
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Prabhu, Dinesh K. (ERC International, Inc. San Diego, CA, United States)
Date Acquired
August 25, 2013
Publication Date
December 20, 2011
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
ARC-E-DAA-TN4578
Meeting Information
Meeting: 50th AIAA Aerospace Sciences Meeting
Location: Nashville, TN
Country: United States
Start Date: January 9, 2011
End Date: January 12, 2011
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
CONTRACT_GRANT: NNA10DE12C
Distribution Limits
Public
Copyright
Public Use Permitted.

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